medical equipment spare parts by metal injection molding

Names of medical instrument, medical equipment spare parts by metal injection molding MIM
Product Description
Customized medical equipment spare parts by HZMIM: Low costCost-effective toolingEnvironmentally friendlyPart-to-part uniformityClose TolerancesHigh-Performance Material Alloy ChoicesComplex shapeHigh Strength/ DensityFlexible production volumesSpeed to marketReduced part weightvarious portal treatment
HZMIM has a high quality feedstock, advanced production equipment and strict quality insepection system.
The material covers a variety of alloys. Our product has excellent stability quality by using continuous, automated production system.
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MIM material
MIM materials have had their chemistries modified in order to withstand the complex metal injection molding process.
There are a wide variety of materials available for metal injection molding, and they generally fall into four categories:
Ferrous alloys, Tungsten alloys, Hard materials, Special materials. Ferrous alloys:steelsstainless steelstool steelsiron-nickel magnetic alloysspecialty ferrous alloys (Invar and Kovar)Tungsten alloys:tungsten heavy alloys tungsten-copperHard materials:cobalt-chromium cemented carbides (WC-Co)cermets (Fe-TiC) Special materials:aluminumprecious metals titanium alloysnickel nickel-base super alloys molybdenummolybdenum-copperparticulate composites Other specific materials: stainless steel:316L Stainless steel17-4PH stainless steel420 stainless steel440C stainless steel 430/303/304Low alloy steel:Fe-2Ni low alloy steelFe-8Ni
At HZMIM, we specialize in stainless steel, and low alloy steel materials for MIM. We can also process Cobalt Chrome (F-75) and other specialty or custom materials.
Don’t worry if you don’t see your material of choice, we can manufacture your precision component using many other materials.
MIM Process
once the proper material is selected, the key steps for the MIM process are as follows:
Step 1: Feedstock – very fine metal powders—usually <15 microns—are mixed with a primary paraffin material and a secondary thermoplastic polymer resulting in a 95-100 percent theoretical density and much closer tolerances.
Step 2: Molding – the feedstock is fed into our multi-slide MIM machinery or our conventional molding equipment, then heated and injected into a cold cavity under high pressure. once it is removed, the component is referred to as a “green part.”
Step 3: Debinding – the “green part” is then put through a controlled process called debinding that removes the binder and prepares the part for the final step. once the debinding is complete, the component is referred to as “brown.”
Step 4: Sintering – the “brown” part is held together by a small amount of binder and is still fragile. During sintering temperatures reach near the melting point of the material. Sintering eliminates the remaining binder and gives the part its final geometry and strength. The entire sintering process takes 15 to 20 hours.
MIM Tooling
When choosing a MIM manufacturer you want to make sure that whatever tooling process you choose delivers consistent parts efficiently and repeatedly. At HZMIM we offer:
Conventional tooling – comes in single cavities, meaning only one part is created per cycle. Our conventional tooling process is suited to larger parts and is designed to offer you efficiency in production and lower costs.
Multi-slide tooling – uses four or more perpendicular slides enabling very complex and accurate casting. In some cases, we use up to six slides, with angles other than 90 degrees. This new process helps meet tighter tolerances and offers better part-to-part consistency.
Heat Treating for MIM Components
MIM materials may be heat treated to increase strength, hardness, and wear resistance. The degree of hardening is determined by the percentage of carbon, alloying elements, and residual porosity of the component. Heat treated parts are given the ultimate tensile strength. To ensure optimum strength and durability, tempering or stress relief is required after quenching.
Calibration after Sintering
After your components are completely rid of all binding material, it may need to be calibrated. Calibration can include these three processes:
Coining
Sizing
Straightening
During the sintering process, parts can be distorted, and start to sag or drag. The three processes above correct these issues and return the part to its original design. Some manufacturers will ship your components elsewhere for calibration, however HZMIM does this process in-house.
Certifications
Company Information
Hangzhou Haizhu MIM products co., ltd. Has been specializing in metal injection molding (MIM), ceramic injection molding (CIM) and magnet for decades.
Our product line including: tools, medical treatment, hardware, ceramic parts, electronic appliance, automobile parts, consumer products, spinning parts and so on. Over 95% of our products are exported to German, United States, Middle East etc.
As the company grew, HZMIM showed its greatest strength:
• Accumulating experience and expertise in designing, manufacturing and marketing.
• Perfect quality control system
• Rich development experience and manufacturing process
• Complete sales service network
We are striving toward excellence and continuously improve product quality, response speed, customer service and our competitiveness in the market.
We always deliver competitive high-quality products and supply excellent services for our global customers.
Our MIM factory
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