Precision Mold Parts

Precision mold parts performance requirements

1. Strength and toughness

High precision mold and tool components often work under harsh condition. Some usually bear a large impact load, resulting in brittle fracture. Thus, precision molds should have high strength and toughness. It’s to prevent mold components from breaking suddenly during working. And the toughness of the mold and tool mainly depends on the carbon content, grain size, and microstructure of the material.

2. Fatigue fracture performance

The fatigue fracture always happens when the high precision plastic injection mold parts are working. It’s because of the long-term effects of cyclic stress. The forms include multiple impact with small energy, stretch, contact, and bending fatigue frature. In general, this property of custom molding and tooling depends on these factors. Like its strength, toughness, hardness, and inclusions content in the material.

3. High-temperature performance

When the working temperature of precision molding and tooling is higher, the hardness and strength will decrease. And it results in early mold wear or failure by plastic deformation. Thus, the mold material should have high tempering stability. It can ensure that the mold has a high hardness and strength in the working temperature.

4. Resistance to cold and heat fatigue

Some molds are in the state of repeated heating and cooling in the working process. Then, it causes the surface of the cavity to be pulled and stressed, resulting in the surface crack and peel off. As a result, it increases the friction force. Beside, it prevents the plastic deformation and reduces the dimensional precision. Finally, it leads to the failure of the mold. Cold and hot fatigue is one of the primary forms of hot working tool failure.

5. Corrosion resistance

In the working process of some molds, like plastic injection molding, they produce strongly aggressive gas. Because there are chlorine, fluorine, and other elements in the plastic, they decompose and precipitate HCI and HF. They erode the cavity surface, increase the surface roughness and aggravate the wear failure.

Contact our engineer services for any kind inquiry and support.dxq@kegao-mould.com

Kegao Precision Technology Co., Ltd. specializes in manufacturing all kinds of custom precision mold components and machining parts. Our customer always use them for stamping mold and plastic injection mold industry. With the craftsman spirit of Japanese, we devote to make custom, durable and high quality precision mold parts. Many of our skilled engineers have over ten years experience. Under their leading of precision machining processes, the customer is able to get more efficient, high accuracy, economic design and products. Precision mouldings we provide always meet or exceed the industry standard tolerances and can reach ±0.002mm.