Surface Treatment of MIM Metal Powder Injection Part

ZCMIM can do a lot of metal spare parts. Taking the mobile phone metal components for example, decorative lens ring, SIM card tray, mobile phone on/off switch button, volume button, metal frame can all be made by MIM metal powderinjection molding. Although other processes can do also, the surface process would be less good than powder injection molding process or high cost or low output.

ZCMIM can do various surface finish in house, which is well received by their customers, such as sand blasting, shot blasting, grinding, burnish, polishing, electroplating etc. ZCMIM will deal with  great. We have a independent surface treatment team. Whatever work efficiency or product quality, ZCMIM can well organized.  Looking forward to working with you!

Original article link：http://www.zcmim.com/article/metalpowderinjectionstlmmpi_1.html

powder injection molding process 6

powder injection molding process is using metal powder as raw materials, such as stainless steel, iron, low alloy steel, using powder metallurgy technology to manufacture various structural parts, powder metallurgy parts is with the mold, so parts of the contour and the consistency of shape and size are very good, by way of the binder removal sintering.

Powder injection molding process

Powder injection molding process is using metal powder as raw materials, such as stainless steel, iron, low alloy steel, the use of powder metallurgy technology to manufacture various structural parts, powder metallurgy parts is in the mold production out of, so parts of the contour and the consistency of shape and size are very good, by way of removing sintering binder.

Short Shot in Metal Injection Molding

It is well known for metal injection molding supplier that short shot is a very common defect in powder injection molding process. Today we would like to discuss the reason for short shot during MIM process. Welcome your supplement.

Phenomenon
--material is not completely filled the cavity

Possible reason for short shot in injection molding

l   Inadequate  measurement set

l  injection pressure is too small

l  injection speed is too slow or injection time is too short

l  mold temperature or tube temperature is not enough

l  the back pressure is too low or no back pressure caused screw idling

l  too much release agent

l  Too short  flow distance or bad  illiquidity of material

l  sprue or runner is too small

Burrs in Metal Injection Molding

It is well known for metal injection molding supplier that short shot is a very common defect in powder injection molding process. Today we would like to discuss the reason for short shot during MIM process. Welcome your supplement.

Phenomenon:
Material overflow from mould cavity

Possible reasons for burrs
- measurement set
- injection pressure is too great
-Insufficient clamping force
-mold or feed tube temperature are too high
-Bad liquidity of material
- crystallization rate is too slow
- bad parting line airtight 

Not Powder Injection Molding Process, PC Used in Plastic Injection Molding

Though both MIM and plastic injection molding are injection process, but their materials are completely different. Now let’s see the characters for PC used in plastic injection.

Characters for PC in plastic injection molding can be conclude as follows:

1. Has a prominent impact toughness and creep properties, has high heat resistance, cold resistance is very good also, brittle temperature - 100 ℃, the  tensile strength is equal to  nylon. PC has much higher elongation and elastic modulus as well as prominent impact strength. Colorless, transparent, good coloring, better heat resistant than  nylon and methanal. Creep resistance and good electrical insulation, good corrosion resistance and abrasion resistance; low water absorption, small shrinkage, good stability.  PC can be used for all kinds of gear, turbine, rack, CAM shaft, pulley, bearings, core, transmission chain, nuts, washers, pump impeller, chimney, container, etc

2. Not alkali resistance, amine and arene. It maybe craze by stress, easy to produce stress concentration (and internal stress), and highe requirements of molding conditions.  Easy to hydrolysis in high temperature,  poor compatibility with other resins.; Poor liquidity, sensitive to temperature change, fast cooling.

3. Cylinder temperature is very important to control the quality of plastic parts. Low temperature will cause starving and matt surface; occur silver and  filaments at high temperature.

4. In case of polycarbonate material contains water, it will seriously affect the flow of the material performance. Therefore it must be dried, commonly at 110 ~ 110 ℃ temperature for 6 ~ 15 h.

If you also would like to know MIM metal injection molding process, you can go to website:  www.zcmim.com. A Chinese metal injection molding supplier with more than 8 years experience can offer you  professional advice and best solutions

Not Powder Injection Molding Process, PF Resin Used in Plastic Injection Molding

Though both MIM and plastic injection molding are injection process, but their materials are completely different. Now let’s see the characters for PC used in plastic injection.

Characters for PF Resin in plastic injection molding can be conclude as follows:

1.      Mechanical properties is very high, big rigidity, small cold flow property, high heat resistance (above 100 ℃), low friction coefficient under water lubrication (0.01 ~ 0.03).  Good electric properties and ability of resistance to acid and alkali corrosion, no deformation because of the change of temperature and humidity. Easy to molding,  low cost. It is  commonly used as car inner decoration.

2.      The disadvantage is that brittle, tonal limited, poor light fastness,  small arc resistance, not resistant to strong oxidizing acid corrosion.

If you also would like to know MIM metal injection molding process, you can go to website:  www.zcmim.com. A Chinese metal injection molding supplier with more than 8 years experience can offer you  professional advice and best solutions

Zcmim metal injection molding suppliers

Metals offer a diverse range of properties and can be machined conventionally or additively . For many of the components we see, the production method will be casting or machining and, as such, prototyping by the same method has distinct advantages. However, Metalinjection molding process is gaining ground as parts start to be designed exclusively for this process.ZCMIM is the best metal injection molding supplier in China.

Powder injection molding process

Powder Injection Molding process manufacturing is only one part of the process. Post manufacture options are just as important to create the perfect finished part and must be considered early on as an intrinsic part of the process. At ZCMIM, we can provide a whole raft of options for post-manufacture, which may include the addition of inserts, screen printing, painting, polishing or protective coatings such as anodizing. Specifically, machined parts may be manually dressed smooth, left natural, primed, powder coated or painted as required.

The formation process of British metal watchband

Watch adapter; strap, the powder injection molding process, the mold development, injection molding, sintering, to meet the requirements of the technology of the production of products, the main material for 316L stainless steel, and 17-4PH, raw powder; surface finish, causing uniform density; on the surface of the product, and sandblasting, polishing to complete; increase the appearance effect; need for plating surface treatment can better anti sweat, rust, and to higher surface effect;