丸眞製作所 List of Products and Services

"MARC-D" is a coating for die-casting molds made of AlCrTiSi-based composite multilayer films. The film is ultra-dense and excels in anti-welding and release properties, and due to its improved wear resistance even in thin films, there is no dimensional change compared to thick film coatings. The wear coefficient is also lower than that of TiN films, TiAlN films, and AlCrN films. Additionally, we also offer "MARC-D plus," which features a nitride diffusion layer combined with the AlCrTiSi-based composite multilayer film. Please feel free to contact us if you have any inquiries. 【Characteristics】 ■ Improved wear resistance ■ Reduced welding amount ■ Enhanced heat check resistance *For more details, please refer to the PDF document or feel free to contact us.

• Coating Agent

We would like to introduce our coating 'MARC-Ace' for cold forging and press processing. This high-performance coating combines excellent adhesion, heat resistance, wear resistance, and toughness. It is a versatile product that can meet various needs. The color is dark gray, with a hardness of 3000Hv and a film thickness of 2.5 to 3.5μm. Please feel free to contact us if you have any requests. 【Specifications (partial)】 ■ Film type: MARC-Ace ■ Applicable classification: For cold forging and press processing ■ Color: Dark gray ■ Hardness (Hv): 3000 ■ Film thickness (μm): 2.5 to 3.5 ■ Oxidation temperature (°C): 1000 *For more details, please refer to the PDF document or feel free to contact us.

• Coating Agent

"Carburizing hardening treatment" is a heat treatment method that hardens the surface of steel by allowing carbon to permeate it. The hardness of steel after hardening is influenced by the carbon content; therefore, steel with a low carbon content increases in hardness through carburizing hardening. Our company is equipped with fully automatic carburizing furnaces and continuous gas carburizing furnaces, providing stable and high production capacity for thin, small, large, single items, and mass production. [Features] - Utilizing the characteristics of each facility, we can accommodate very shallow carburizing for thin and small items. - Carburizing nitriding treatment is also performed depending on the type of steel. *For more details, please refer to the external link page or feel free to contact us.

• Heating device
• Processing Contract
• Other metal materials

"Quenching" is a process in which steel is heated to a temperature that transforms it into austenite and then rapidly cooled. While quenching increases hardness, it also makes the material brittle and prone to cracking, so tempering is always performed to adjust hardness and add toughness. "Tempering" refers to the process of reheating the material to a temperature lower than that used during quenching, holding it for a certain period, and then gradually cooling it. Our company is equipped with batch-type and continuous-type quenching furnaces, as well as various tempering furnaces, allowing us to meet a wide range of customer needs. [Features] ■ Stable processing enabled by the use of diverse equipment ■ Use of dedicated furnaces for small items prevents product loss ■ Expertise and know-how cultivated in the Suwa region, a hub for precision manufacturing, to meet various needs *For more details, please refer to the external link page or feel free to contact us.

• Heating device
• Processing Contract
• Other metal materials

"Annealing" is a technique that softens metal, removes internal stress, and homogenizes the metal structure through heating and cooling. At our company, we perform various types of annealing using different equipment tailored to specific purposes, accommodating everything from large components to extremely small precision parts. 【Features】 ■ Equipped with oxidation-free furnaces, vacuum furnaces, and continuous furnaces ■ Capable of annealing steel materials according to quantity and application ■ Can also measure magnetic remanence after magnetic annealing using an automatic remanence meter (HC meter) *For more details, please refer to the external link page or feel free to contact us.

• Heating device
• Processing Contract
• Other metal materials

"Vacuum heat treatment" refers to a general term for heat treatment conducted in a vacuum furnace. Unlike in the atmosphere, it does not cause oxidation or decarburization, making it a technology that allows for a highly lustrous finish. It is adopted for the heat treatment of many components and products, typically performed in a vacuum with a pressure of 1 to 10^−3 Pa or in an inert gas atmosphere. Our company maintains a stable and high production capacity from single items to mass production, performing processes such as quenching of various tools and parts, solid solution treatment of stainless steel, and vacuum magnetic annealing. [Features] ■ Reduction of heat treatment distortion through vacuum heating and gas cooling ■ Clean working environment ■ Processing possible with heat cycles and vacuum levels set according to purpose ■ High lustrous finish achievable due to the absence of oxidation and decarburization ■ Stable and high production capacity maintained from single items to mass production *For more details, please refer to the external link page or feel free to contact us.

• Vacuum forming machine
• Heating device
• Other metal materials

The "M-NC Process" is a gas nitriding process that performs "nitriding potential control" during gas soft nitriding treatment. By precisely controlling the nitriding potential, it allows for the formation of compound layers and the control of their composition according to application needs. Compared to conventional gas soft nitriding treatments, it enables the control of compound layers with superior functional characteristics. 【Features】 ■ Low-temperature treatment compared to quenching, resulting in minimal distortion and dimensional changes ■ Improved corrosion resistance, also usable for switching from plating ■ Provides stable processed products both within and between lots ■ Conducted in an atmospheric treatment, considering environmental impact *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

The "nitriding of austenitic stainless steel" that our company conducts achieves high hardness, but it also has the drawback of losing the high corrosion resistance characteristic of austenitic stainless steel. To improve corrosion resistance during "gas nitriding of austenitic stainless steel," our company has newly developed the "super nitriding treatment," which maintains the same high surface hardness as before while achieving high corrosion resistance. 【Features】 - A uniquely developed nitriding treatment technology that significantly improves corrosion resistance in austenitic stainless steel nitriding. - Surface hardness remains above Hv1000 as before. - Achieves high corrosion resistance while maintaining the same high surface hardness as before. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

The "M-COAT series" utilizes an ion plating process based on the arc method. This process allows for the instantaneous melting and evaporation of various coating materials through arc discharge, enabling the formation of multi-element and dense hard wear-resistant films. [Features] ■ Ion plating process using the arc method ■ Instantaneous melting and evaporation of various coating materials through arc discharge ■ Enables the formation of multi-element and dense hard wear-resistant films *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

"Gas carburizing and nitriding treatment" is a process that forms a carburizing layer on top of a nitriding layer. The formation of a lubricating carburizing-nitriding layer improves wear resistance, seizure resistance, scuffing resistance, fatigue resistance, and corrosion resistance. Since the carburizing layer acts like a solid lubricant, it is effective under harsh operating conditions. The more severe the operating conditions, such as lack of lubrication and high loads, the more pronounced the effects. 【Features】 ■ Seizure resistance and scuffing resistance ■ Improved wear resistance ■ Reduction of gear noise ■ Reduction of deformation and dimensional changes *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

The "gas nitriding method" is a surface treatment that allows for the simultaneous penetration of carbon and nitrogen into the surface of metals, forming a stable nitrided layer that provides high hardness and fatigue strength. It is applicable to steels such as SPCC and pure iron, which do not achieve hardness through quenching. Our company adopts a gas nitriding method (pollution-free) that uses nitrogen, ammonia, and carbon dioxide as atmosphere gases (N2-based method) for pollution prevention and environmental conservation. The equipment is fully automated, and it is possible to switch between gas cooling and oil cooling according to your requirements. 【Features】 - Adopts a gas nitriding method (pollution-free) that uses nitrogen, ammonia, and carbon dioxide as atmosphere gases (N2-based method) for pollution prevention and environmental conservation. - Fully automated equipment. - Capable of switching between gas cooling and oil cooling according to your requirements. - Can accommodate mass production parts as well as small lots and individual parts. - Has stable quality and high production capacity. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

"Gas nitriding of stainless steel" is a process that penetrates nitrogen into the surface layer using gas to harden the surface. Our company has made it possible to achieve stable nitriding treatment of austenitic stainless steel through a special gas nitriding method. We can uniformly form a high-hardness nitrided layer on both types of stainless steel. [Features] ■ Since it is performed as an atmospheric treatment, it has less environmental impact and prevents pollution. ■ Compared to salt bath nitriding, it can accommodate complex shapes and provides a clean finish. ■ Applicable to both types of stainless steel. ■ It is possible to uniformly form a high-hardness nitrided layer. *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract

"Ion plating" is a type of PVD (Physical Vapor Deposition) that involves the thin deposition of evaporated materials onto the surface of other materials. In a high vacuum, metals such as titanium are evaporated and ionized, acquiring a positive charge. When a negative voltage is applied to the substrate, the evaporated metal is attracted. The evaporated metal, possessing high kinetic energy, collides with the substrate and reacts with gas to form a dense, high-hardness golden TiN film or a silver TiC film. By coating molds and tools using this method, wear resistance, adhesion resistance, and release properties are enhanced, significantly contributing to increased productivity, quality maintenance and improvement, and cost reduction. [Features] - Enhanced wear resistance, adhesion resistance, and release properties - Increased productivity - Quality maintenance and improvement - Cost reduction - Color tone can also be controlled *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

The "MX-IP processing" is a revolutionary surface treatment that combines the technology of MX processing (a treatment developed by our company) designed to extend the lifespan of molds and tools, which originates from heat treatment technology, with ion plating technology, allowing for continuous processing within the same treatment device. A special surface hardening treatment (MX processing) is applied to the base material, followed by ion plating. Compared to conventional ion plating, it offers higher adhesion, fully demonstrating the performance of the film, which contributes to ensuring and extending the product lifespan. 【Features】 ■ Matching the technology of "MX processing, developed from heat treatment technology to extend the lifespan of molds and tools" with "ion plating technology" ■ Higher adhesion compared to conventional ion plating ■ Ability to fully demonstrate the performance of the film ■ Contributes to ensuring and extending product lifespan *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

"MX processing" is a revolutionary surface treatment method developed by our company that minimizes dimensional changes during heat treatment while enhancing the durability of tool steel. Unlike salt bath nitriding and gas soft nitriding, which chemically alter the surface, this surface treatment primarily composed of nitrogen hardens the surface without changing the properties of the tool steel. [Features] ■ Can achieve high surface hardness ■ Maintains toughness despite hardness ■ Minimizes dimensional changes (to 2-3 microns or less) *For more details, please refer to the PDF document or feel free to contact us.

• Surface treatment contract service

In our lives, there are numerous items that utilize steel materials. This is because steel materials can extensively change their properties through composition and heat treatment, allowing them to be adapted for many applications. The mission of heat treatment is to create properties suited to each intended use, playing a crucial role in ultimately determining the value of the product. At Marushin Seisakusho, which bears this important role, we aim to maximize the properties of metals and other materials through processing technologies that are the foundation of manufacturing. We continuously create processing, surface treatment technologies, quality, and value, earning the trust of our customers and striving to develop alongside the local community. 【Business Activities】 ■ Metal heat treatment processing ■ Metal surface treatment processing ■ Machining *For more details, please contact us or download the catalog.

• Processing Contract
• Contract manufacturing