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tandard requirements for LED bracket mould processing
Date: 2020-07-03 Source: Xuanpin
With the development of the market and the increase in demand, the requirements for products are becoming higher and higher, the mold parts manufacturers and the types of parts are also becoming more and more. Whether the mold parts produced by manufacturers can meet the needs of the market is a problem we need to face and consider together. Then, LED bracket mould processing should meet the standard requirements of what?
1. Cold and hot fatigue resistance of components
Some molds in the working process in the state of repeated heating and cooling, so that the cavity surface tension, pressure stress, cause surface cracking and peeling, increase friction, prevent plastic deformation, reduce the size of precision, resulting in the failure of the mold. Cold and hot fatigue is one of the main forms of thermal die failure. This kind of precision die parts should have high resistance to cold and hot fatigue.
2. Strong toughness of parts
Most of the working conditions of precision die parts are very harsh, and some of them often bear a large impact load, which leads to brittle fracture. In order to prevent the die parts from breaking suddenly when working, the die should have high strength and toughness. The toughness depends mainly on the carbon content, grain size and microstructure of the material.
3. High-temperature performance of parts
When the working temperature of the mold is higher, the hardness and strength will decline, leading to the mold early wear or plastic deformation and failure. Therefore, the die material should have a higher tempering stability, to ensure that the die under the working temperature, with a higher hardness and strength.
4. Corrosion resistance of parts
When some molds are working, due to the presence of chlorine, fluorine and other elements in the plastic, HCI, HF and other strong corrosive gases are decomposed and separated after being heated, which corrode the cavity surface of the mold, increase its surface roughness, and aggravate the wear failure.
5. Fatigue and fracture properties of parts
In the working process of precision die parts, fatigue fracture often occurs under the long-term action of cyclic stress. Its forms include low energy multi-impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture and bending fatigue fracture. The fatigue fracture performance of the die depends on its strength, toughness, hardness, and the content of inclusions in the material.
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