About Us
Company history
The products and services provided by Qinhuangdao Zhongwei Precision Machinery Co., Ltd. can not only meet the needs of customers, but also exceed their expectations. We stand for the dual principles of quality and value.
Qinhuangdao Zhongwei Precision Machinery Co., Ltd. was established in 1997 and is located in Huangdianzhuang Development Zone, Changli, Qinhuangdao. In 2013, it was recognized as a technology-based small and medium-sized enterprise by the Hebei Provincial Department of Science and Technology; in 2014, it was recognized as a military-civilian integration enterprise by the Hebei Provincial Bureau of Science, Technology and Industry for National Defense; in 2019, it was recognized as a high-tech enterprise.
In 2013, it was recognized as a technology-based small and medium-sized enterprise.
In 2019, it was rated as a high-tech enterprise.
Our R&D Team
The team has 10 senior professional titles, 3 lecturers and postdoctoral fellows, 5 doctoral students and 10 masters students. It has successively been approved for 6 national special projects/projects/subprojects for the development of magnetic confinement nuclear fusion energy and powder metallurgy research, and 15 projects for international cooperation projects of the National Natural Science Foundation of China/General Fund/Youth Fund
Items, authorized more than 40 national invention patents The company has ISO9001 system certification and IATF16949 system certification.
Our precision casting products adopt silica sol investment casting technology and non-ferrous metal die casting technology. Relying on excellent Taiwan equipment, high-precision CNC machine tools, modern and reliable quality control system, German Spectromax spectrum analyzer, high-precision metallographic microscope and other high-end testing equipment, according to GB, ASTM, EN, DIN, JIS and other standards, the production Stainless steel, carbon steel, alloy steel, copper, aluminum and other precision castings and finished products. Our company has a complete set of production lines from mold design, casting to machining, and has strong technology research and development capabilities, which can meet the special process requirements of customers such as deep holes, complex cavities, and accurate positioning, especially for complex geometric shapes, "small and "Precise" parts have unique technical advantages. The precision castings produced basically eliminate defects such as pores and sand holes, the surface roughness reaches Ra6.3-1.6, and the dimensional accuracy can reach CT6-4.
Our company also has the metal powder injection molding process (MIM), using high-end injection machines, vacuum sintering furnaces, image measuring instruments and other equipment to produce ultra-fine and highly complex metal parts, the surface roughness can reach Ra1.6-0.8, the size The accuracy can reach (±0.5%～±0.3%). It has further expanded the manufacturing field of fine and small metal parts of our company.
Our company has been committed to the research and development and production of fine and small parts for 25 years!
Production Experience
Before improvement
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When I first started making products and had no experience, the position of the nozzle was placed on the plane on the back of the tooth surface, but the thickness of the connection between the large hole on the right and the tooth surface was much thicker, that is, position A, and shrinkage cavities appeared inside the large round hole. Loose, seriously affecting product quality.
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After improvement
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The two positions on the red side are feed nozzles, so that the pressure of molten steel is continuously delivered to the pressure of the thickness position, so that the phenomenon of shrinkage and porosity is completely eliminated. The process design of some products more complex than this requires the design of 2 to several feed nozzles to ensure the quality of the product, and then truly eliminate the phenomenon of porosity and shrinkage. We have 20 years of experience in precision casting, so put your products in our company with peace of mind and escort you.
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Advantage/Function 2:
The precision of the company's metal injection molding process products can reach 0.01, and the smoothness can reach Ra1.6; each product is weighed in the metal injection process to ensure that each product reaches its density,
Each product is weighed after injection molding
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If the special size does not meet the requirements, we will make exclusive product fixtures and abrasives to ensure that each size meets the requirements of customers and drawings.
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Advantage/Function 3:
In terms of materials, our company can produce titanium alloy, tungsten alloy, stainless steel, copper alloy, aluminum alloy, hard alloy and other products.
Precision Casting Process Materials
Metal Injection Molding Process Materials
Powder metallurgy compression molding process materials
Advantage/Function 4:
For the cooling process of metals, whether it is precision casting or injection molding, we have rich experience and can carry out special interventions according to the product structure, such as making jigs to ensure the deformation of the product during the forming process.
Precision casting product inspection tools to ensure that 100% of the products pass the inspection and leave the factory.
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Calibration tools for metal injection molding products
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If you are a merchant consulting through this page, please specify in the email to enjoy a 3% discount from the company.
So let's talk about how it can specifically help your [your product name] business. If you have a difficult product, you can send us an email immediately, cooperation-mall@zw-jm.com, and let our technical team escort you. Zhongwei Precision Machinery is willing to serve you with the best price and the highest quality every customer. To achieve a win-win situation is the basis of our development.
