zvinhu zvipi zvakanakira mold?

The mold meets the requirements of working conditions

1. Pfeka kuramba

When the blank is plastically deformed in the mold cavity, inoyerera uye inotsvedza nepamusoro pegomba, kukonzera kukweshana kunotyisa pakati pepamusoro pegomba nepasi, izvo zvinoita kuti mold ikundikane nekuda kwekupfeka. Naizvozvo, the wear resistance of the material is one of the most basic and important properties of the mold.

Kuomarara ndicho chinhu chikuru chinokanganisa kupfeka kupokana. Kazhinji, the higher the hardness of the mold parts, the smaller the amount of wear and the better the wear resistance. Pamusoro pe, Pfeka kupokana kunoenderana zvakare nerudzi, quantity, chimiro, saizi uye kugovera kwematangi mune izvo zvinyorwa.

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. Kuneta Kufungidzira Kuita

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 Funigue Fracture, contact fatigue fracture, and bending fatigue fracture.

The fatigue fracture performance of the mold mainly depends on its strength, kuomarara, kuomesa, uye zvirimo zvekuda kwezvinyorwa.

4. Kubata kwakanyanya

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. Corrosion Rishance

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.

Chepiri、the mold meets the process performance requirements

Kugadzira mold kunowanzo batanidza maitiro akati wandei senge kuforoma, kucheka, uye kupisa kurapwa. Kuti uve nechokwadi chemhando yekugadzira mold uye kuderedza mari yekugadzira, zvinhu zvacho zvinofanirwa kunge zvine fungidziro yakanaka, machinability, kuoma, kuoma uye kugaya; it should also have small oxidation, decarburization sensitivity and quenching Deformation and cracking tendency.

1. Forgeability

Iyo ine yakaderera inopisa forging deformation resistance, plastiki yakanaka, yakafara forging tembiricha range, low tendency of forging cracking and cold cracking and precipitation of network carbides.

2. Annealing processability

Iyo spheroidizing annealing tembiricha range yakafara, iyo annealing kuoma kwakaderera, iyo fluctuation range idiki, uye mwero we spheroidizing wakakwira.

3. Machinability

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

4. Sensitivity kune oxidation uye decarburization

Kana ichipisa pakupisa kukuru, iyo oxidation resistance yakanaka, iyo decarburization kumhanya inononoka, it is not sensitive to the heating medium, and the tendency of pitting is small.

5. Kuoma

Mushure mekudzima, ine yunifomu uye yakakwirira pamusoro kuoma.

6. Kuoma

Mushure mekudzima, yakadzika yakaomeswa layer inogona kuwanikwa, iyo inogona kuomeswa nekushandisa nyoro yekudzima svikiro.

7. Tsika yekudzima deformation uye kuputika

Kudzima kwakajairika kune shanduko diki yevhoriyamu, shape warping, slight distortion, uye kuderera kwemaitiro asina kujairika deformation. Conventional quenching has low sensitivity to cracking, and is insensitive to quenching temperature and workpiece shape.

8. Kugaya

The relative wear of the grinding wheel is small, and the limit of grinding without burn is large. Hazvina hanya nehutano hwegumbo rekukuya uye mamiriro ekutonhora, and it is not easy to cause abrasion and grinding cracks.

Chetatu, the mold meets the economic requirements

When selecting zvinhu for the mold, the principle of economy must be considered to reduce the manufacturing cost as much as possible. Naizvozvo, 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. Pamusoro pe, 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.

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