トキワロイ工業 List of Products and Services

When producing custom-made products or developing prototypes If your company creates products tailored to user preferences, how do you procure the various materials? Or what if you want to develop a product with a new specification prototype? Even within the same product group, when manufacturing specialized tools with different specifications based on their intended use or tools that vary according to each craftsman's preferences, it is possible that the shapes of the materials will differ each time. Additionally, in cases where the production is aimed at special use specifications or improving the usability for the craftsman themselves, it is often the case that these do not become mass-produced items. At Tokiwa-Roi, we respond to the material needs of such products as well. We can accommodate even from a single shape. Of course, if you want to create just one prototype, we can provide materials starting from one piece. *For more details, please refer to the PDF document or feel free to contact us.

• alloy

When expanding the product lineup through size segmentation If your company has a series of products with similar shapes, how would you respond if segmenting sizes could help you capture the needs of more users? At Tokiwa Roi, we accommodate segmented orders by accepting requests for similar shape products with dimensions of length, width, and height shifted by 1mm, as well as bulk orders for multiple varieties with different angles or radii at consistent intervals. *For more details, please refer to the PDF document or feel free to contact us.

• alloy

If your company were to create a design where the dimensions of each component gradually increase, how would you go about manufacturing it? For the xylophone keys, would you purchase a long board and cut it into individual sizes in-house? Or would you procure materials of different sizes in advance and only perform finishing and assembly processes in-house? If it's a xylophone, the material is wood, so cutting it might be relatively easy. But what about a metallophone? This might also be possible if you have high-speed cutting machines. However, what part of the process is actually important for your company? Is it preparing the necessary components? Or is it the subsequent assembly and finishing of the prepared components? Tokiwa Roy provides materials in the sizes, dimensions, and shapes that our customers need. *For more details, please refer to the PDF document or feel free to contact us.*

• alloy

If we consider carving tools, I think it is common for sets to be sold that include multiple types of blades with subtly different shapes, even if they are the same size. The materials for these blades are usually very hard and require a considerable amount of effort to process. If all the blades are made by cutting and polishing from the same angular-shaped material, the overall processing time will be quite significant. However, if we have the required quantity of materials that are already close to the finished shape for each type of blade, wouldn't the overall processing time be greatly reduced? *For more details, please refer to the PDF document or feel free to contact us.*

• Special Steel

For example, products like sets that only demonstrate their value when multiple types are available, such as carving tools, or series products that need to offer slightly different sizes and shapes of similar designs to suit user applications, will have different material shapes used for each model number. At Tokiwa Roi, we provide manufacturers who create such products with the necessary sizes and shapes of materials, one by one, for all types of materials. Of course, we also accommodate single-item processing for prototype development and other needs. 【Manufacturing Process that Makes "Can We Create This?" Possible】 1⃣ Initial Consultation 2⃣ Review of Drawings 3⃣ Discussion 4⃣ On-site Visit if Necessary 5⃣ Providing a Unique Solution *For more details, please refer to the PDF document or feel free to contact us.

• alloy

In the joining of precision machined products, it is required that there is little processing alteration or deformation, as well as reliability in joint strength and functionality of the joints (joining parts). This document explains "joining technologies used for precision machined products," detailing representative joining techniques used for fine precision parts and precision joining of thin plates, specifically "brazing (including soldering)" and "adhesion." [Contents] ■ Key points required for joining precision machined products ■ About brazing ■ About adhesion, etc. If you are interested, please feel free to download the document or contact us.

• Other cutting tools

Since our establishment, we have been engaged in precision joining of dissimilar metals. Here, we introduce examples of precision brazing products made from 【stainless steel (SUS) × carbide】. This document clearly explains precision joining of dissimilar metals with accompanying images. Furthermore, we provide a detailed explanation of the key points for brazing dissimilar metals! 【Contents】 ■ Product images after brazing ■ Enlarged view after grinding the brazed area ■ Key points of brazing If you are interested, please feel free to download the document or contact us.

• Other cutting tools

"Braze welding," used for precision joining of fine precision parts and thin plates, is determined by various factors regarding its accuracy. This document explains the "three main factors that determine the accuracy of brazing," and provides detailed explanations for each factor. [Contents] - Selection of suitable filler metal and flux for the base material - Temperature management from heating to cooling - Design of appropriate joint sections, etc. If you are interested, please feel free to download the document or contact us.

• Other cutting tools

Since our founding, we have been engaged in precision joining of dissimilar metals. We are pleased to present a document explaining our "Precision Joining Technology for Hard Dissimilar Metals"! This document provides an overview of "various metal joining techniques." It clearly explains the joining principles, methods, mechanisms, and applications with easy-to-understand charts and diagrams, making it a must-read for anyone interested in metal joining. 【Contents】 ■ Joining Principles (Material Joining, Chemical Joining, Mechanical Joining) ■ Joining Methods (Fusion Welding, Brazing, Adhesive Bonding, Riveting, etc.) ■ Mechanisms (described according to each joining method) ■ Applications (described according to each joining method) If you are interested, please feel free to download the document or contact us.

• Other cutting tools

The document explains "precision joining technology between dissimilar metals." When using special alloys such as cemented carbide, technology for joining dissimilar metals is required. Brazing is one of the most effective precision joining techniques and is used for joining cemented carbide, among other applications. With joining technology for dissimilar metals, special alloys can be utilized in various situations, potentially expanding their range of applications. If you are interested, please feel free to download the document or contact us.

• Other cutting tools

The document provides an explanation of "brazing." It is written in a way that is easy to understand, even for those who have no prior knowledge of brazing. The content covers basic topics such as "What is brazing?" as well as the position of brazing among various welding techniques, the differences between brazing and welding, and examples of products that have undergone brazing processes (with photos). If you are interested, please feel free to download the document or contact us.

• Welding Machine
• Welding robot
• Processing Contract

We provide precision machining services using cemented carbide and austenitic stainless steel (SUS304 series) as base materials for brazed products. The base material with brazed cemented carbide will be precisely machined using techniques such as grinding and electrical discharge machining. The brazed products have been heated in the previous process, which usually results in distortion of the base material. We will perform precision machining that requires strict geometric tolerances while removing the distortion of the base material. In particular, when the base material is made of high thermal expansion coefficient materials such as SUS, significant warping occurs during the brazing of cemented carbide, and new warping can also develop during the grinding process, necessitating advanced machining techniques. For more details, please refer to the "Machining Technology Special" document.

• Other processing machines

Typically, precision machined products using carbide are often made from solid materials. One reason for this is that the more stringent the required precision, such as surface roughness and geometric tolerances, the easier it is to control the machining of solid materials. However, even in brazed products where only the applicable parts are made of carbide, if there is sophisticated brazing technology, it is possible to achieve precision machining in subsequent processes without issues, while also meeting the required precision of the finished product. In fact, considering cost and weight, solid materials made entirely of carbide may not always be the optimal material choice for certain applications. Our company also supports precision machined products using carbide and austenitic stainless steel (SUS304 series) as the base material for brazed items. For more details, please refer to the "Processing Technology Special Feature" document.

• Capacitor

Castings are suitable for mass production of complex shapes, but their wear resistance is a challenge due to the inability to undergo heat treatment. By brazing cemented carbide onto friction parts, wear resistance can be improved. For example, casting materials like gray cast iron (FC material) are typically chosen for their high degree of freedom in shaping and cost efficiency during mass production. Even with such casting base materials, when strength and wear resistance are required, ductile cast iron (FCD material) may be used. Furthermore, if the wear environment at the action point of a tool made from FCD material is particularly harsh, the tool's effectiveness can be enhanced by making only that specific action point from cemented carbide. In such cases, the brazing processing technology of castings and cemented carbide is utilized. However, there are also technical challenges associated with brazing cemented carbide to castings. For more details, please refer to the "Processing Technology Special Feature."

• Other consumables

Typically, carbide is selected as a material when wear resistance is required. However, considering cost and machinability, there are many challenges in manufacturing solid carbide products. In such cases, carbide brazing, where only the active parts are made of carbide, can be an effective solution. However, when only the active parts are made of carbide, careful consideration must be given to the design of the joint surface with the base material; otherwise, the functionality of the critical carbide part may be compromised, potentially leading to tool failure. Therefore, it is necessary to design the joint section and create appropriately shaped carbide components accordingly. For more details, please refer to the "Processing Technology Special" materials.

• Other processing machines

The chuck used for gripping objects may be exposed to wear depending on the object being gripped. Therefore, high wear-resistant carbide is sometimes selected as a material for the chuck. Particularly for the purpose of gripping objects, it is common to process the surface with knurling as an anti-slip treatment, and this is done using carbide. In such cases, it is possible to manufacture the entire chuck tool from solid carbide, but it is also feasible to consider carbide brazed products where only the surface area, which is the acting part, is made of carbide while the base material is made of steel. Ultimately, it can be considered that achieving the intended purpose can be accomplished by using carbide that has been knurled only on the areas exposed to wear. For more details, please refer to the "Processing Technology Special" materials.

• Other processing machines

Wear-resistant treatment that covers specific areas with a carbide plate without gaps to prevent tool wear caused by shock and friction. 【In what situations is this beneficial?】 - In usage environments where the tool surface is exposed to friction with debris, and wear occurs predominantly in specific areas. - When there are inconsistencies in the wear-resistant treatment on the tool surface, and specific weak points become the origin of wear, it is important to prevent this. ⇒ It is crucial to bond carbide seamlessly to the necessary areas according to the tool shape. For more details, please refer to the "Processing Technology Special" materials.

• Other machine elements
• Other processing machines

In drilling bits, inappropriate claw shapes can create shock resistance, which may lead to a decrease in the drilling performance of the machine itself. To fully utilize the tool's performance, it is necessary to consider optimal shape design to reduce the overall shock resistance of the tool and the brazing position of the carbide part that will be subjected to force. In cases where the tool is welded to the machine body, if the welding position is too close to the brazing position, there is a risk of tool failure due to reduced brazing strength caused by the heat during welding. In other words, the shape and brazing position of the carbide part become crucial points. For more details, please refer to the "Processing Technology Special Feature."

• Other processing machines
• Other machine elements

If the tip of the tool has a specific shape, it is considered that the shape itself possesses functionality. However, if the physical properties of the tip do not have sufficient wear resistance against friction with the workpiece, there is a possibility that the original functionality may be compromised due to shape changes caused by wear. Therefore, a bonding design that covers the surface of the tip with a hard material without altering the mechanical properties or shape of the tip is effective. When cutting away the surface of the tool's base material at the tip and replacing it with a hard alloy, joint design that takes bonding strength into account and advanced brazing techniques are required. Our company can accommodate the design and manufacturing of such hard alloy brazing processes. For more details, please refer to the "Processing Technology Special Feature."

• Other processing machines

Repeated friction at the same points, such as the sliding parts of various machines and the outer surfaces of construction machinery, can lead to a decline in machine performance due to wear. Among hard special steels, cemented carbide has extremely excellent wear resistance, but it cannot be directly welded. Therefore, using S45C, which has good weldability, as the base material, a cemented carbide plate is brazed to the grooved area, resulting in a "wear-resistant plate (brazed cemented carbide type)." By innovating the shape of the cemented carbide and the depth of the brazing position, we aim to improve wear resistance. If you are interested in various wear-resistant processing techniques, please refer to the "Processing Technology Special Feature" or feel free to contact us.

• Other processing machines

Repeated friction at the same points, such as sliding parts of various machines and the outer surfaces of civil engineering machinery, can lead to a decline in machine performance due to wear. Among hard special steels, cemented carbide has extremely excellent wear resistance, but it cannot be directly welded. Therefore, using S45C, which has good weldability, as the base material, a cemented carbide plate is brazed onto the grooved area, resulting in the "wear-resistant plate (cemented carbide brazed type)." By innovating the shape of the cemented carbide and the depth of the brazing position, we aim to improve wear resistance. If you are interested in various wear-resistant processing techniques, please take a look at the "Processing Technology Special Feature" or feel free to contact us.

• Other processing machines

If the tip of the tool has a specific shape, it is considered that the shape itself possesses functionality. However, if the physical properties of the tip do not have sufficient wear resistance against friction with the workpiece, there is a possibility that the original functionality may be compromised due to shape changes caused by wear. Therefore, a bonding design that covers the surface of the tip with a hard material without altering the mechanical properties or shape of the tip is effective. When cutting away the surface of the tool's base material at the tip and replacing it with a hard alloy, joint design that takes bonding strength into account and advanced brazing techniques are required. Our company can accommodate the design and manufacturing of such hard alloy brazing processes. For more details, please refer to the "Processing Technology Special Feature."

• Other processing machines

While cemented carbide has the strength of being very resistant to friction, it also has the weakness of being brittle and vulnerable to impact (prone to chipping). To maximize the performance of tools, it is necessary to have design techniques that leverage the strengths of cemented carbide and processing techniques that overcome its weaknesses. The key technical elements for utilizing cemented carbide are mainly the following three: ◎ Powder metallurgy technology: A technique that controls metal properties and dimensional tolerances by adjusting the processes of selecting, mixing, pressing, forming, and sintering raw powder. ◎ Cemented carbide bonding technology: A technique that appropriately bonds cemented carbide to various base materials using methods such as brazing, adhesives, and press-fitting. ◎ Precision machining technology for cemented carbide: A technique that performs precision machining on cemented carbide, which is a difficult material to grind, to achieve the required precision for specific applications. If you are considering extending the lifespan of various mechanical parts or selecting materials that can withstand specific usage environments, please read the technical handbook. 【Published Examples (Excerpt)】 ◆ Sintering dimensional control of cemented carbide products ◆ Brazing technology for cemented carbide to castings ◆ Brazing technology for cemented carbide to stainless steel ◆ Improved machining technology for cutting edge shapes

• Other processing machines

In tools where carbide is used at the tip for wear-resistant applications, there may be cases where impact acts as a resistance, leading to a decrease in the tool's effectiveness. To fully utilize the tool's performance, it is necessary to consider optimal shape design to reduce the overall impact resistance of the tool and the brazing position of the carbide part that will be subjected to force. In cases where the tool is welded to the machine body, if the welding position is too close to the brazing position, there is a risk of tool defects due to a decrease in brazing strength caused by the heat during welding. In other words, the shape of the carbide part and the brazing position become important points. For more details, please refer to the "Processing Technology Special Feature."

• Other processing machines
• Other machine elements

The chuck for gripping objects is exposed to wear depending on the object being gripped. Therefore, high wear-resistant carbide is sometimes selected as a material for the chuck. Particularly for the purpose of gripping objects, it is common to process the surface with a knurling treatment as an anti-slip measure, and this is done using carbide. In such cases, it is possible to manufacture the entire chuck tool from solid carbide, but it is also feasible to consider carbide brazed products where only the surface area, which is the active part, is made of carbide while the base material is made of steel. Ultimately, it can be considered that achieving the intended purpose can be accomplished by using carbide that has been knurled only in the areas exposed to wear. For more details, please refer to the "Processing Technology Special" materials.

• Other processing machines

Typically, carbide is selected as a material when wear resistance is required. However, considering cost and difficulty in processing, there are many challenges in manufacturing solid carbide products. In such cases, carbide brazing, where only the active parts are made of carbide, can be an effective solution. However, when making only the active parts from carbide, careful consideration must be given to the design of the joint surface with the base material; otherwise, the functionality of the critical carbide part may be compromised, potentially leading to tool failure. Therefore, it is necessary to design the joint section and to process the carbide into an appropriate shape accordingly. For more details, please refer to the "Processing Technology Special" materials.

• Other processing machines

The reason why castings such as gray cast iron (FC material) are selected as materials is believed to be due to their high degree of freedom in shaping and the ability to reduce costs during mass production. Even with such castings, when strength and wear resistance are required, ductile cast iron (FCD material) may be used. Furthermore, if the wear environment at the action point of a tool made from FCD material is particularly harsh, enhancing the tool's effectiveness can be achieved by making only that action point from cemented carbide. In such cases, the brazing processing technology of castings and cemented carbide is utilized. However, there are also technical challenges associated with brazing cemented carbide and castings. For more details, please refer to the "Special Feature on Processing Technologies and Ideas for Cemented Carbide."

• Other consumables

We provide precision machining services for materials that are brazed with cemented carbide and austenitic stainless steel (SUS304 series). We perform precision machining on the base material brazed with cemented carbide using techniques such as grinding and electrical discharge machining. The brazed materials are heated in the previous process, which usually causes distortion in the base material. We carry out precision machining, which requires strict geometric tolerances, while removing this distortion. Particularly when the base material is made of SUS or other materials with a high coefficient of thermal expansion, significant warping occurs during the brazing of cemented carbide, and new warping can also develop during the grinding process, necessitating advanced machining techniques. For more details, please refer to the "Cemented Carbide Machining Technology and Idea Introduction Special Feature" document.

• Other processing machines

Super-hard processed products typically manage the dimensional accuracy of the finished product through grinding or electrical discharge machining from sintered material blocks. Of course, secondary processing is necessary to achieve dimensional accuracy below 100 microns in precision machined products. However, even in sintered products that do not undergo these secondary processes, special-shaped press forming and a certain level of dimensional accuracy management can be achieved depending on the mold design. Additionally, costs and delivery times are improved compared to processed products. For more details, please refer to the "Processing Technology Special Feature" materials.

• Processing Jig

In the case of cemented carbide brazed products where only the cutting edge of the cemented carbide tip needs to be changed, it is possible to consider improving the cutting edge shape. The cemented carbide is brazed to the base material. Therefore, by reheating it to the melting temperature of the brazing material to melt the brazing material and remove the cemented carbide tip, a new cemented carbide tip can be attached. For example, if you want to change the rake angle of the cutting edge of the cemented carbide tip, you would remove the tip, cut the base material, process a new brazing surface, and then braze the tip again. If you also want to change the shape of the tip, a new tip of a different shape can be brazed. While attention must be paid to the effects of thermal stress and structural changes in the base material due to reheating, if these issues can be managed through temperature control, it is possible to make improvements only to the working part of the tool while using the original base material. For more details, please refer to the "Processing Technology Special" document.

• Other processing machines

This is a special tool that is bonded to the base material surface with carbide without any gaps. If there are gaps between the carbide plates on the tool surface, degradation of the tool can begin from those gaps, and in some cases, there is a possibility of breakage. The key to the processing is to ensure that there are no gaps between the carbide plates by aligning the right angles at the chip corners during bonding. Additionally, the carbide end faces are polished to ensure they do not protrude from the base material. For more details, please refer to the "Processing Technology Special Feature" materials.

• Other processing machines

Wear-resistant treatment that covers specific areas with a carbide plate without gaps to prevent tool wear caused by shock and friction. 【In what situations is this beneficial?】 - In environments where the tool surface is exposed to friction with debris, and wear occurs predominantly in specific areas. - When there are inconsistencies in the wear-resistant treatment on the tool surface, and certain weak points become the origin of wear, it is important to prevent this. ⇒ It is crucial to bond carbide without gaps in necessary areas according to the tool shape. For more details, please refer to the "Processing Technology Special" materials.

• Other machine elements
• Other processing machines

Typically, precision machined products using cemented carbide are often made from solid materials. One reason for this is that the stricter the required precision, such as surface roughness and geometric tolerances, the easier it is to control the machining of solid materials. However, even with brazed products where only the applicable parts are made of cemented carbide, if there is sophisticated brazing technology, it is possible to achieve precision machining in subsequent processes without issues, and to meet the required precision of the finished product. In fact, considering cost and weight, solid materials made entirely of cemented carbide may not always be the optimal material choice for certain applications. Our company also supports precision machined products using brazed items made of cemented carbide and austenitic stainless steel (SUS304 series) as the base material. For more details, please refer to the "Cemented Carbide Machining Technology and Idea Introduction Special Feature" document.

• Capacitor

We would like to introduce the main products of ultra-hard materials handled by Tokiwa Roi Industrial. Starting with "various chips related to boring" in horseshoe and house shapes, we also offer "plate chips" related to machine cutting tools. Chamfering chips can be adjusted for angle and dimensions. Although wear-resistant tool-related products are not listed due to their special shapes, we welcome inquiries for custom manufacturing. 【Product Lineup】 ■ Impact Resistance Series - Chips for ground drilling - Metal crown chips for boring - Chips for crushers and shredders ■ Wear Resistance Series - Ultra-hard materials for machine cutting tools (plate chips, chamfering chips) - Chips for optical lens polishing tools - Special shape chips *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Processing Contract
• alloy

Our company designs and manufactures urban development tools tailored to your specifications. Therefore, this catalog only includes some of our main products. There are also products with shapes and dimensions that are not listed. Additionally, we can design products according to your requests, so please feel free to consult with us. *For more details, please refer to the PDF materials or feel free to contact us.

• Other cutting tools
• Other work tools
• Contract manufacturing

Since our establishment in 1955, we have responded to the detailed needs of customers in various fields through the manufacturing of cemented carbide for over half a century. The strengths we have cultivated during this time are our production system capable of "small lot production" and "custom-made orders." Moving forward, we aim to be a cemented carbide manufacturer that utilizes these strengths to solve challenges in the field. *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Processing Contract
• alloy

At Tokiwa Roi Industries, we accept orders for the production of "special small bits" tailored to specific applications. Dimensions and shapes can be customized upon consultation. We can process not only the shape of carbide tips but also the base material shapes, such as cutter bits with a width of 19 mm or less that are mounted on small-diameter steel pipes, according to your needs. Additionally, we can accommodate orders for small quantities as prototypes. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Processing Contract
• alloy

At Tokiwa Roid Industries, we accept orders for the production of "special-shaped chips" tailored to our customers' applications. We will discuss dimensions and shapes based on your drawings and process the carbide chips according to your specifications. We can accommodate even small quantities.

• Contract manufacturing
• Processing Contract

At Tokiwa Roi Industries, we accept orders for the production of "ground drilling chips." We can produce carbide chips tailored to your application and method, even in small quantities. Additionally, we can accommodate custom specifications such as dimension specifications and angle adjustments.

• Contract manufacturing
• Processing Contract

At Tokiwa Roi Industries, we accept orders for the production of "metal crown tips for boring." We use materials with excellent wear resistance, with a hardness of around 90 as indicated by HRA. Orders can be placed starting from 500 pieces. For prototype orders, we can accommodate requests starting from 100 pieces. 【Features】 ■ Capable of handling chamfering and C faces ■ Uses materials with excellent wear resistance and a hardness of around 90 as indicated by HRA ■ Can also accommodate high-hardness materials with a hardness of 91 or higher ■ Orders can be placed starting from 500 pieces ■ For prototype orders, we can accommodate requests starting from 100 pieces *For more details, please refer to the PDF document or feel free to contact us.

• Contract manufacturing
• Processing Contract
• alloy