unsa nga materyal ang labing maayo alang sa agup-op?

Kanunay adunay mga problema sa bahin sa pag-injection sa makina sa paghulma sa injection agup-op meets the requirements of working conditions

1. Pagsul-ob sa resistensya

When the blank is plastically deformed in the mold cavity, nagdagayday kini ug nag-slide sa ibabaw sa lungag, hinungdan sa mapintas nga friction tali sa nawong sa lungag ug sa blangko, nga maoy hinungdan nga mapakyas ang agup-op tungod sa pagsul-ob. Busa, the wear resistance of the material is one of the most basic and important properties of the mold.

Ang katig-a mao ang nag-unang hinungdan nga nakaapekto sa pagsukol sa pagsul-ob. Sa kinatibuk-an, the higher the hardness of the mold parts, the smaller the amount of wear and the better the wear resistance. Ingon kadugangan, Ang pagsukol sa pagsul-ob adunay kalabotan usab sa tipo, quantity, porma, gidak-on ug pag-apod-apod sa mga carbide sa materyal.

2. Strength

The working conditions of the molds are mostly very bad, and some of them are often subjected to large impact loads, which leads to brittle fracture. In order to prevent sudden brittle fracture of mold parts during work, the mold must have high strength and toughness.

The toughness of the mold mainly depends on the carbon content, grain size and organization state of the material.

3. Kakapoy fracture performance

In the process of mold work, under the long-term action of cyclic stress, fatigue fracture is often caused. Its forms include low-energy multiple impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture, and bending fatigue fracture.

The fatigue fracture performance of the mold mainly depends on its strength, katig-a, katig-a, ug ang sulod sa mga inklusyon sa materyal.

4. Taas nga temperatura nga performance

When the working 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 a high hardness and strength at the working temperature.

5. Resistance to cold and heat fatigue

Some molds are in a state of repeated heating and cooling during the working process, which causes the surface of the cavity to be pulled and pressure to change the stress, causing surface cracks and peeling, increasing friction, hindering plastic deformation, and reducing dimensional accuracy. Mold failure. Heat and cold fatigue is one of the main forms of failure of hot work molds, and this type of mold should have high resistance to cold and heat fatigue.

6. Pagbatok sa kaagnasan

When some molds such as plastic molds are working, due to the presence of chlorine, fluorine and other elements in the plastics, strong corrosive gases such as hci and hf will be resolved after being heated, which will erode the surface of the mold cavity, increase its surface roughness, and aggravate wear failure.

Ikaduha、the mold meets the process performance requirements

Ang paghimo sa mga agup-op sa kasagaran naglakip sa daghang mga proseso sama sa pagpanday, pagputol, ug init nga pagtambal. Aron masiguro ang kalidad sa paghimo sa agup-op ug pagpakunhod sa gasto sa produksiyon, ang materyal kinahanglan nga adunay maayo nga forgeability, machinability, pagkagahi, hardenability ug grindability; it should also have small oxidation, decarburization sensitivity and quenching Deformation and cracking tendency.

1. Pagkamapasagdan

Kini adunay ubos nga init nga forging deformation resistance, maayo nga pagkaplastikan, lapad nga forging temperature range, low tendency of forging cracking and cold cracking and precipitation of network carbides.

2. Pagproseso sa pag-anneal

Ang spheroidizing annealing temperature range kay lapad, ubos ang katig-a sa annealing, gamay ra ang fluctuation range, ug taas ang spheroidizing rate.

3. Pagkamachinability

The cutting amount is large, the tool loss is low, and the machined surface roughness is low.

4. Pagkasensitibo sa oksihenasyon ug decarburization

Kung gipainit sa taas nga temperatura, maayo ang resistensya sa oksihenasyon, hinay ang decarburization speed, it is not sensitive to the heating medium, and the tendency of pitting is small.

5. Pagkagahi

Pagkahuman sa pagpalong, kini adunay uniporme ug taas nga katig-a sa nawong.

6. Pagkagahi

Pagkahuman sa pagpalong, ang mas lawom nga gahi nga layer mahimong makuha, nga mahimong gahi pinaagi sa paggamit sa usa ka mild quenching medium.

7. Ang kalagmitan sa pagpalong sa deformation ug cracking

Ang naandan nga pagpalong adunay gamay nga pagbag-o sa gidaghanon, shape warping, slight distortion, ug ubos nga kalagmitan sa abnormal nga deformation. Conventional quenching has low sensitivity to cracking, and is insensitive to quenching temperature and workpiece shape.

8. Pagkagaling

The relative wear of the grinding wheel is small, and the limit of grinding without burn is large. Dili kini sensitibo sa kalidad sa grinding wheel ug mga kondisyon sa pagpabugnaw, and it is not easy to cause abrasion and grinding cracks.

Ikatulo, the mold meets the economic requirements

When selecting mga materyales for the agup-op, the principle of economy must be considered to reduce the manufacturing cost as much as possible. Busa, under the premise of satisfying the performance, first choose the lower price, carbon steel can be used without alloy steel, and domestic materials can be used without imported materials. Ingon kadugangan, the production and supply of the market should also be considered when selecting materials. The selected steel grades should be as few and concentrated as possible .

The injection molding process conditions have an impact on the appearance and mechanical properties of plastic products. Each process condition parameter affects each other and is not independent. The defects of some products are the result of mutual influence.

Kung naa kay pangutana sa industriya sa plastik,palihug ayaw pagduhaduha sa pagpangutana FLYSE team,hatagan ka namo ug labing maayong serbisyo!

Whatsapp / Wechat 008618958305290