Tre principer för val av formmaterial

(1) Mögel uppfyller arbetsvillkor

 

  1. Slitstyrka

 

När ämnet är plastdenaturerat i hålrummet, det flyter och glider längs med ytan av kaviteten, vilket resulterar i kraftig friktion mellan kavitetens yta och ämnet, vilket leder till att formen går sönder på grund av slitage. Så slitstyrkan hos material är en av de mest grundläggande och viktiga egenskaperna hos matriser.

 

Hårdhet är den viktigaste faktorn som påverkar slitstyrkan. Generellt, desto högre hårdhet på formdelar, the smaller the wear amount and the better the wear resistance. Dessutom, the wear resistance is also related to the type, kvantitet, morfologi, size and distribution of carbides in the material.

 

  1. Strength and tenacity

 

Most of the working conditions of the mold are very bad, and some of them often bear large impact load, which leads to brittle fracture. In order to prevent the sudden brittle fracture of mold parts, mold should have high strength and toughness.

 

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

 

  1. Fatigue fracture properties

 

During the working process of the mold, fatigue fracture often occurs under the long-term effect of cyclic stress. 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 die mainly depends on its strength, toughness, hardness and inclusion content in the material.

 

  1. High temperature performance

 

When the working temperature of the mold is higher, the hardness and strength will decrease, leading to early wear or plastic deformation of the mold and failure. Because the mold material should have high tempering stability to ensure that the mold has high hardness and strength at working temperature.

 

  1. Cold and thermal fatigue resistance

 

 

Some moulds are in the state of repeated heating and cooling in the working process, which causes the surface of the cavity to be tension and pressure variable stress, causes surface cracking and peeling, increases friction, hinders plastic deformation, reduces dimensional accuracy, and leads to mold failure. Thermal and cold fatigue is one of the main failure modes of hot-working mold, which should have high cold and thermal fatigue resistance.

 

  1. Korrosionsbeständighet

 

When some moulds such as plastic moulds are working, due to the presence of chlorine, fluorine and other elements in the plastics, strong corrosive gases such as HCI and HF are decomposed and precipitated after heating, which erode the surface of the mould cavity, increase its surface roughness and aggravate the wear failure.

 

 

(2) Mold meets process performance requirements

 

Mold manufacturing usually goes through forging, skärande, heat treatment and other processes. In order to ensure the manufacturing quality of the mold and reduce the production cost, the material should have good malleability, cutting machinability, hardenability, hardenability and grindability, and should also have small oxidation, decarbonization sensitivity and quenching deformation cracking tendency.

 

  1. Forgetability

 

It has low resistance to hot forging deformation, good plasticity, wide forging temperature range, low tendency of cold cracking and precipitation of network carbides.

 

  1. Annealing Processing

 

The spheroidizing annealing temperature range is wide, the annealing hardness is low and the fluctuation range is small, and the spheroidizing rate is high.

 

  1. Bearbetningsbarhet

 

Large cutting parameters, low tool wear, low surface roughness.

 

  1. Sensitivity of oxidation and decarbonization

 

When heated at high temperature, it has good antioxidant capacity, slow decarbonization speed, insensitive to heating medium and little tendency to produce pitting.

 

  1. Hardenability

 

After quenching, it has uniform and high surface hardness.

 

  1. Hardenability

 

After quenching, a deeper hardening layer can be obtained, and it can be hardened by using a mild quenching medium.

 

  1. Cracking Tendency of Quenching Deformation

 

The volume change of conventional quenching is small, the shape warpage and distortion are slight, and the tendency of abnormal deformation is low. Conventional quenching has low cracking sensitivity and is insensitive to quenching temperature and workpiece shape.

 

  1. Grindability

 

The relative wear of grinding wheel is small, the limit grinding amount without burn is large, and it is insensitive to the quality of grinding wheel and cooling conditions, so it is not easy to cause grinding damage and grinding cracks.

 

(3) Mold meets economic requirements

 

I valet av formmaterial, the principle of economy must be considered to reduce the manufacturing cost as much as possible. Därför, on the premise of meeting the service performance, the first choice is low price, carbon steel can be used instead of alloy steel, domestic materials can be used instead of imported materials. Dessutom, the production and supply situation of the market should also be taken into account when selecting materials. The selected steel grades should be as few as possible, concentrated and easy to purchase.

 

JasonMould Industrial Company Limited, etablerad i 2010, är en ledande Kina mögelfabrik. JasonMould specialiserar sig på tillverkning av plastmögel för hushållsapparater, medicinsk utrustning, elektronisk utrustning, säkerhetsutrustning samt övervakningssystem.

De företag har över 15000 kvadratmeter fabrik. Med plastinjektionsverktygsavdelningar med olika maskiner och expertis, JasonMould erbjuder verktyg från små och precisa mobiltelefondelar till så stora som bildelar. Våra verktyg exporteras främst till U.S.A., Europa, Japan och Storbritannien. JasonMoulds diversifieringsstrategi och full service har vunnit komplimanger från kunder över hela världen.

Vårt uppdrag är att erbjuda våra kunder högkvalitativa formprodukter och tjänster. Vi strävar efter att överträffa våra kunders förväntningar på prissättning, kvalitet och leverans i tid. För att uppnå vårt uppdrag, JasonMould:

  • Förbinder sig att ständigt förbättra medarbetarnas kompetens och effektivitet,
  • Ger våra anställda en ren och säker arbetsmiljö,
  • Uppgraderar maskinteknik och supportutrustning genom ett strikt underhållsprogram, och
  • Upprätthåller kundernas verktyg till sin högsta prestanda

För mer om Kina formsprutning kostnad,besök https://www.jasonmolding.com/

Förfrågan Kontakt:

Kontaktperson: James Yuan

Företagsnamn: JasonMould Industrial Company Limited

Adress: LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong-provinsen, Kina

Telefon: 86-752-6682869

E-post: [email protected]

Hemsida: https://www.jasonmolding.com

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