【導(dǎo)讀】模具是制造業(yè)的重要工藝基礎(chǔ)在我國模具制造屬于專用設(shè)備制造業(yè)中國雖。國模具工業(yè)才駛?cè)氚l(fā)展的快車道近年不僅國有模具企業(yè)有了很大發(fā)展三資企業(yè)。雖然中國模具工業(yè)發(fā)展迅速但與需求相比顯然供不應(yīng)求其主要缺口集中于。精密大型復(fù)雜長壽命模具領(lǐng)域由于在模具精度壽命制造周期及生產(chǎn)能力等方面。中國與國際平均水平和發(fā)達(dá)國家仍有較大差距因此每年需要大量進(jìn)口模具。中國模具產(chǎn)業(yè)除了要繼續(xù)提高生產(chǎn)能力今后更要著重于行業(yè)內(nèi)部結(jié)構(gòu)的調(diào)。整和技術(shù)發(fā)展水平的提高結(jié)構(gòu)調(diào)整方面主要是企業(yè)結(jié)構(gòu)向?qū)I(yè)化調(diào)整產(chǎn)品結(jié)構(gòu)。命中高檔模具及模具標(biāo)準(zhǔn)件發(fā)展速度高于一般模具產(chǎn)品塑料模和壓鑄模比例增。大專業(yè)模具廠數(shù)量及其生產(chǎn)能力增加三資及私營企業(yè)發(fā)展迅速股份制改造步伐。加快等從地區(qū)分布來看以珠江三角洲和長江三角洲為中心的東南沿海地區(qū)發(fā)展。雖然我國模具總量目前已達(dá)到相當(dāng)規(guī)模模具水平也有很大提高但設(shè)計(jì)制造。水平總體上落后于德美日法意等工業(yè)發(fā)達(dá)國家許多當(dāng)前存在的問題和差距主要

　　

【正文】 the expense is low patching damages the pattern design to be possible to achieve flawlessly 3 Sprinkle to cast into the type system mold technique Sprinkling to cast into technical and mon characteristics of the type system mold is according to the kind piece for basis sprinkle a convex and cave mold a surface do not need the machine to process Make physically to mainly have following several categories type in the mold 4 Extrusions takes shape the technology Using the beryllium copper alloy good thermal conductivity and the stability after the solid melt aging treatment of metal use the swaging pressure to make the mold concave model cavity Its characteristic is makes the cycle short the cavity precision is high the IT7 level surface roughness Ra 0025 mu m the intensity is high the life may reach 500000 times does not have the environmental pollution This technology is using the metal material in the thin crystal grain certainly takes shape the temperature under the low distortion speed condition when the material has the best super plasticity toes attend to carry out raised mold which the initiative finishes then may extrude the concave mold with the small strength one kind of fast economical pattern making technology Ultra models takes shape material typical representative is Zn22AL 5 Do not have the mold multi spots forming technology Does not have the mold multi spots fast forming technology is by CADCAMCAT The technology is the main method about may adjust the base main body group highly using the puter control to form forms the surface replaces the traditional mold to carry on the three dimensional curved surface forming to the sheet an modern advanced manufacture technology This technology may change the distortion way and the stressful condition at will enhances the material the formed limit may form repeatedly by this elimination material interior remaining stress the realization does not have the snapping back forming 6 Triumphant Uygur bright steel belt blanking falls the material pattern making technology The new steel belt blanking falls the material pattern making technology is one kind is different with has raised the concave mold structure steel belt mold generally it is with specially makes the new fast economical pattern making technology by the single edge steel belt which the backing strip is posed This kind of mold weight is light only then 200kg the processing precision for 177。035 050mm may suit each kind of black and the nonferrous metal 05065mm thick sheet processing generally The life may achieve 525 ten thousand the production cost is low 7 Molds semi finished materials fast manufacture technology solid casting Because the massive molds are belong to the single unit or the production the mold semi finished materials manufacture quality and the cycle and the cost to the final mold quality and cyclical and the cost influence are very important The modern mold semi finished materials widely have used the seeds casting technology the socalled solid casting is polystyrene PS either polymethacrylate PMMA manufactures using the foam plastics replaces traditional the wooden mold or the metal pattern after the modeling does not have to take out the model then may the casting under the foam plastics model high temperature liquid metal function deflagrate the gasification but to vanish the molten metal substitution original foam plastics model holds the position after the condensation forms the casting 8 Other aspects technologies In order to simplify the mold the structural design reduces the mold cost reduces the mold manufacture cycle in domestic and foreign also successively appeared some other aspects new technology application like trades the mold frame the ramming unit the cutting edge builtup welding quickly inlays the block casting the nitrogen spring and so on Nitrogen springs on mold application The nitrogen spring is one kind of new elastic function part replaces the spring the rubber the polyurethane or the air cushion with it side it can accurately provide presses the strength then may have the greatly initial ball pressure in the small space does not need pre tightly is basically hit the pressure basically in the mold entire work process to be constant The ball pressure size and the working point position may accurate conveniently adjust as necessary simplifies the mold to stretch nearby