Blog | Custom Injection Molding,Injection Molding Supplies

What Causes Insufficient Steel Hardness? Nov 30, 2018
The hardness of mold heat treatment is a very important mechanical property index,it is a very serious defect when the hardness is not qualified . Insufficient or uneven hardness of the mold after heat treatment will reduce the wear resistance and fatigue strength of the mold and other properties,even resulting in early failure of the mold, seriously shorten the mold life. The Reasons Causing: 1) ...
- Hardened mould
- mould forging process
- large mold
plastic injection molding, plastic surface, plastic mold. Nov 30, 2018
The parting surface is the joint surface of the mold for taking out the product in the process of injection molding. An important factor that decides the structural form of the mold, it is related to the overall structure of the mold, the design of the pouring system, the demoulding of the plastic parts and the manufacturing process of the mold. Selection principle of parting surface: A. The maxim...
- plastic injection molding
- plastic mold
- plastic surface
Vacuum casting Nov 30, 2018
Using silicone molds and polyurethane (PU) resins, it is possible to get very close to production-quality parts with vacuum casting. The tooling is generally made from silicone, which is very cheap compared with a steel injection mold tool. A range of materials are available and it is possible to do over molded parts, as well. Vacuum casting is only really competitive for smaller production runs a...
- Silicone mold
- vacuum casting
- PU
How to improve the quality of molds? Nov 30, 2018
There are 3 basic ways to improve the quality of molds. Firstly, mold design is the most important step to improve the mold quality. Many factors need to be taken into account, including the selection of steel materials, the usability and safety of mold structure, the machinability of parts and the convenience of mold maintenance. All above factors should be considered at the very beginning ...
- Mold design
- Hot runner mold
- Mold lifetime
Ten principles of mold design for P/L (1) Nov 30, 2018
1. Consideration of clamping force The lateral clamping force of the mold is relatively small, so for a large product with a large projection area, the direction of the large projection area should be placed in the direction of the mold opening and closing. 2. Meet the product release requirements The parting surface is also for the product to be able to take out the mold smoothly. Therefore, the ...
- mold design
- plastic mold structure
- P/L design,
The solution of bubble issue during injection molding process Nov 23, 2018
According to the causes of bubbles, the countermeasures are as follows: (1) When the wall thickness of the product is large, the cooling speed of its external surface is faster than that of the central plastic part. Therefore, as the cooling goes on, the resin at the central part shrinks and expands towards the surface, resulting in insufficient filling at the central part. This condition is calle...
- Plastic Mold
- Injection molding
- plastic parts
Test questions of plastic injection molds (2) Nov 23, 2018
Let’s go on from last article about discussing the common problems in the mold test. 6.Gate sticking: due to mechanical resistance in the sprue bushing, insufficient cooling or failure of the pulling bar, the gate sticks in the sprue bushing. 7.Poor demolding: due to excessive filling, poor mold release performance, etc., the plastic parts are difficult to demold or the plastic parts are deformed ...
- Plastic mold
- mold trial
- plastic part
How to tell the plastic mould quality? Nov 23, 2018
There are 4 aspects to adjudge whether it is a good quality mould. 1. Part quality 1.1 the stability and conformity of the part dimension 1.2 the smoothness of the surface of the part 1.3 the utilization rate of the part materials, etc 2. Mould lifetime Under the premise of ensuring the part quality, the mould is able to complete the specified cycling time or the number of parts. 3. Mould Maintena...
- Plastic mould
- Mould Maintenance
- Part demoud
Solution for surface burning of mold Nov 16, 2018
Injection molds are often burned for some reason during production.Depending on the cause of the burn, such as machine, mold, or molding conditions, there are different solution. 1. Mechanical reasons: overheating of the cylinder due to abnormal conditions; or stagnation of the resin due to the nozzle and screw thread.At this time, the nozzle, screw and barrel should be cleaned. 2. The cause of th...
- Injection molds
- mold solution
- surface burning

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