新座冶金 List of Products and Services

Introducing processing examples of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Assy parts】. Examples of processing Assy parts for ATM, multifunction printers, and electric bicycles! Combinations with other materials. Bearing and shaft press-fitting. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing examples of processing special-shaped parts using sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. Examples of processing special-shaped parts for OA equipment, power tools, automatic doors, hydraulic components, agricultural machinery, construction equipment, and general-purpose engines! Processing without machining is possible. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing processing examples of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Sintered Alloy Oil-Embedded Bearings】. Processing examples of sintered alloy oil-embedded bearings for various printer and electric tool applications! Φ2 to Φ50. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing processing examples of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Copper-based components】. Processing examples of copper-based components for ATM, color printers, hydraulic parts, and health equipment! Φ2 to Φ50. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing examples of processing with sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Sintered Stainless Steel】. Examples of processing sintered stainless steel for medical devices, sensors, and power tools! SUS304, 316, 420, 430. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing a processing case of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Helical Pulley】. A processing example of helical pulleys for inkjet printers and health equipment! Flange 0.010 to maximum twist angle 20°. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing processing examples of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Various Pulleys】. Examples of processing various pulleys for inkjet printers, automatic doors, ATMs, belt conveyors, and agricultural machinery! Φ5 to Φ60. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing processing examples of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. [Gears for reduction gears]. Processing examples of gears for reduction gears used in automatic doors, ATMs, automatic shutters, and power tools! Case outer diameter Φ13 to Φ45. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing examples of processing sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Various Gears】. Processing examples of various gears for inkjet printers and ATMs! Engagement accuracy grade 0 or higher. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Introducing a processing case of sintered alloys (powder metallurgy) at Niiza Metallurgy Co., Ltd. 【Helical Gears】. A processing case of helical gears for laser printers and multifunction printers! Engagement accuracy of grade 1 to a maximum twist angle of 30°. *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

We will explain various post-processing methods after sintering. The sintered body is placed in a sizing mold and pressurized to correct distortions and improve dimensional accuracy. It is also possible to modify the surface shape. Additionally, we perform barrel polishing, steam treatment, and oil impregnation. 【Various Post-Processing Methods After Sintering】 ■ Sizing ■ Barrel polishing (including burr treatment by shot blasting) ■ Steam treatment (water vapor treatment) ■ Machining ■ Oil impregnation ■ Plating (resin impregnation is required for sealing treatment) ■ Coating *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Other processing machines

This is an introduction to the manufacturing parts handled by Shinza Metallurgy Co., Ltd. General industrial parts can undergo additional processing such as machining and surface treatments like plating. Additionally, high-precision gears and pulleys can now be produced in quantities exceeding 2 million high-precision parts per month thanks to our in-house developed molding automatic machines. 【Features】 <High-precision gears and pulleys> ■ JGMA116-02 Class 0 ■ Pulley flatness within 10μ ■ Successful mass production ■ Enabled by our in-house developed molding automatic machines, capable of producing over 2 million high-precision parts per month *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

As an example of the process image, after sintering, machining, tapping, cutting, and hardening are performed. Material → Sintering → Secondary processing → Completion (hardening). Shapes that cannot be made with molds are processed by cutting. 【Process Examples (Excerpt)】 ■ Sizing after sintering → Steam treatment ■ After sintering, machining, tapping, cutting, hardening ■ Material → Sintering → Secondary processing → Completion (hardening) ■ Horizontal holes and taps that cannot be made with molds ■ Shapes that cannot be made with molds are processed by cutting *For more details, please refer to the PDF document or feel free to contact us.

• Other molds
• Other processing machines

The molds are made of hard metals (such as carbide, SKD, etc.). They are primarily composed of a die, upper and lower punches, and a core. For multi-stage or complex shapes, additional molds may be required, and devices that perform auxiliary operations connected to the molding press will be necessary. The raw powder is filled into the mold set in the molding press, and pressure is applied from above and below to compact it, after which it is removed from the mold. The sintering time is generally around 7 hours. *For more details, please refer to the PDF document or feel free to contact us.*

• Other molds
• Other processing machines

This is an introduction to the raw materials handled by Niiza Metallurgy Co., Ltd. The metal powders used as raw materials include iron, copper, nickel, chromium, tungsten, and molybdenum. There are also powders that are alloyed from the start, like stainless steel. Basically, any metal that can be powdered can be used as a raw material. The mixing ratios can be freely determined, so different types of powders can be placed in a mixer and blended to create raw powder that meets the required characteristics. 【Features】 <Raw Materials (Composition)> ■ Metal powders include iron, copper, nickel, chromium, tungsten, and molybdenum ■ Basically, any metal that can be powdered can be used as a raw material *For more details, please refer to the PDF document or feel free to contact us.

• Composite Materials
• Other metal materials

This document provides information about the manufacturing and processing of sintered alloys (powder metallurgy) conducted by Niiza Metallurgy Co., Ltd. It introduces various post-processing methods after sintering, as well as the processes involved, using photographs, starting from raw materials (formulations). If you need manufacturing and processing of sintered alloys (powder metallurgy), please feel free to leave it to us. [Contents (excerpt)] ■ Powder Metallurgy (Sintered Alloys) ■ Sintered Alloys ■ Raw Materials (Formulations) ■ Mixing ■ Molds *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• Contract manufacturing

Shinza Metallurgy Co., Ltd. was established in 1968. The products we design, manufacture, and sell are used in a wide range of fields, including automobiles, office automation equipment, precision machinery, and industrial machinery. As a specialized manufacturer of sintered alloys, our company is engaged in research and development to bring out their characteristics and to challenge various possibilities for special-shaped machine parts, oil-impregnated bearings, and materials such as iron, copper, stainless steel, and aluminum. 【Production Equipment】 ■ Powder molding machines, sizing presses, power presses, sintering furnaces, steam furnaces, V-type mixers, rotary barrel machines, shot blasting machines, vacuum impregnation machines, NC lathes, general-purpose lathes, milling machines, drilling machines, tapping machines. *For more details, please refer to the PDF materials or feel free to contact us.

• Contract manufacturing
• Other machine elements

Shinza Metallurgy Co., Ltd. is a company primarily engaged in the manufacturing, processing, and sales of sintered alloy (powder metallurgy) products. In addition to production equipment such as powder molding machines and sizing presses, we also have a well-equipped inspection facility, including 3D measuring machines. If you have any inquiries regarding sintered alloy products, please consult us first. 【Company Objectives】 ■ Manufacturing, processing, and sales of sintered alloy (powder metallurgy) products ■ Precision machining and assembly ■ All operations incidental to the above *For more details, please download the PDF or feel free to contact us.

• Other machine elements
• Contract manufacturing