Plastic Shoe Drying Rack Injection Mould

2021-12-04

Plastic Shoe Drying Rack Injection Mould


Mould Steel: H13

Mould Plate: S50C

Mould Cavity:8 cavities

Runner: Cold Runner

Cooling System: Recycle Water

Injector System: Automatic

Delivery Time: 40 days




What Should We Confirm Before Shoe Drying Rack Injection Mould Making?

The first point: abrasion resistance

When the blank is plastically deformed in the mold cavity, it moves and slides along the surface of the cavity, causing violent conflict between the surface of the cavity and the blank, and then causing the mold to fail due to wear. Therefore, the wear resistance of materials is one of the most basic and important functions of the mold.
Hardness is the primary factor affecting wear resistance. In general, the higher the hardness of the mold parts, the smaller the amount of wear and the better the wear resistance. In addition, the wear resistance is also related to the type, quantity, shape, size and dispersion of the carbide in the material.

The second point: strong patience
The operating conditions of the molds are mostly very harsh, and some often bear a large impact load, which then leads to brittle cracking. In order to avoid the sudden brittle fracture of mold parts during operation, the mold must have high strength and durability.
The resistance of the mold mainly depends on the carbon content, grain size and organization state of the material.


The third point: fatigue cracking function
In the process of mold operation, under the long-term action of cyclic stress, fatigue cracking is often caused. The methods include repeated impact fatigue cracking with small energy, fatigue cracking by stretching, fatigue cracking by touch, and zigzag fatigue cracking.
The fatigue cracking function of the mold mainly depends on its strength, resistance, hardness, and the content of inclusions in the material.




Fourth point: high temperature function

When the operating temperature of the mold is higher, the hardness and strength will decrease, leading to early wear of the mold or plastic deformation and failure. Because the mold material should have high anti-tempering stability, to ensure that the mold has high hardness and strength at the operating temperature.


Fifth point: resistance to cold and heat fatigue
Some molds are in a state of repeated heating and cooling during operation, which causes the surface of the cavity to be pulled and pressure to change stress, causing surface cracking and falling off, increasing the conflict force, preventing plastic deformation, reducing the accuracy of the scale, and then causing Mold failure. Hot and cold fatigue is one of the primary ways that hot-worked molds fail. This type of mold should have a high resistance to cold and heat fatigue.

Sixth point: corrosion resistance
When some molds such as plastic molds are in operation, because there are elements such as chlorine and fluorine in the plastic mold, they decompose and separate strong corrosive gases such as hci and hf after heating, which will corrode the surface of the mold cavity, increase the surface roughness, and aggravate wear failure .

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