Кадом мавод беҳтарин барои қолаби?

Дар қолаб meets the requirements of working conditions

1. Муқовимат

When the blank is plastically deformed in the mold cavity, дар рУи кад-кади чукурча чорй шуда ме-лачд, ки боиси кашиши шадиди байни сатхи ковок ва бланка мегардад, ки ин боиси аз фарсуда шудани колиб мегардад. Бинобар ин, the wear resistance of the material is one of the most basic and important properties of the mold.

Сахтӣ омили асосӣест, ки ба муқовимат таъсир мерасонад. Умуман, the higher the hardness of the mold parts, the smaller the amount of wear and the better the wear resistance. Дар Илова, Муқовимат ба навъи марбут аст, quantity, шакл, Андоза ва паҳншавии карбидҳо дар мавод.

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. Хастагӣ

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, хастагӣ шаффоф, contact fatigue fracture, and bending fatigue fracture.

The fatigue fracture performance of the mold mainly depends on its strength, мустаҳкам, сахтӣ, ва мундариҷаи фарогир дар мавод.

4. Фаъолияти баланди ҳарорат

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. Муқовимати зангзанӣ

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.

Дуюм、the mold meets the process performance requirements

Истеҳсоли қолабҳо одатан якчанд равандҳоро дар бар мегирад, ба монанди қаллобӣ, буридан, ва коркарди гармӣ. Бо максади таъмин намудани сифати махсулоти колиб ва кам кардани арзиши аслии махсулот, материал бояд кобилияти хуб дошта бошад, корношоямӣ, сахтгирӣ, сахтгирй ва суфташавандагй; it should also have small oxidation, decarburization sensitivity and quenching Deformation and cracking tendency.

1. Фондакорӣ

Он муқовимати пасти деформатсияи гармкуниро дорад, пластикии хуб, диапазони васеи харорати каландкунй, low tendency of forging cracking and cold cracking and precipitation of network carbides.

2. Қобилияти коркарди пӯст

Диапазони ҳарорати гармкунии сфероидкунӣ васеъ аст, сахтии та-виш паст аст, диапазони флуктуация хурд аст, ва суръати сфероидкунй баланд аст.

3. Қобилияти коркард

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

4. Ҳассосият ба оксидшавӣ ва декарбуризатсия

Ҳангоми дар ҳарорати баланд гарм кардан, муқовимати оксидшавӣ хуб аст, суръати декарбуризация суст аст, it is not sensitive to the heating medium, and the tendency of pitting is small.

5. Сахтпазирӣ

Пас аз хомӯш кардан, сахтии якранг ва баланди сатх дорад.

6. Сахтпазирӣ

Пас аз хомӯш кардан, қабати амиқтар сахттар ба даст овардан мумкин аст, ки бо истифода аз мухити сабуки хомушкунй сахт кардан мумкин аст.

7. Тамоюли хомӯш кардани деформатсия ва крекинг

Хомӯшкунии анъанавӣ тағирёбии ҳаҷми хурд дорад, shape warping, slight distortion, ва тамоюли пасти деформатсияи ғайримуқаррарӣ. Conventional quenching has low sensitivity to cracking, and is insensitive to quenching temperature and workpiece shape.

8. Суфташавандагӣ

The relative wear of the grinding wheel is small, and the limit of grinding without burn is large. Он ба сифати чархи суфтакунанда ва шароити хунуккунӣ ҳассос нест, and it is not easy to cause abrasion and grinding cracks.

Сеюм, the mold meets the economic requirements

When selecting масолех for the қолаб, the principle of economy must be considered to reduce the manufacturing cost as much as possible. Бинобар ин, 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. Дар Илова, 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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