對(duì)材料成型與控制工程的認(rèn)識(shí)(存儲(chǔ)版)
【正文】 力。 5） 真空成形 工藝過(guò)程：將熱塑性塑料片材置于模具中壓緊并加熱至軟化溫度，然后將模具型腔抽真空，真空產(chǎn)生的負(fù) 壓將軟化的塑料片吸入模內(nèi)并使之緊貼模具，冷卻后即得所需塑料制品。 特點(diǎn)：生產(chǎn)速度快、效率高，操作可自動(dòng)化，能成型形狀復(fù)雜的零件，特別適合大量生產(chǎn)。適用于具有特殊功能的中小零件（軸承、刀具等），形狀特別復(fù)雜零件的凈形成形（齒輪等）。其特點(diǎn)成型阻 力小，可以獲得形狀十分復(fù)雜的工件；工件直接由液態(tài)凝固成型，內(nèi)部組織一般不如鍛件好；應(yīng)用范圍廣，既可適于塑性材料，也可用于脆性材料。 特點(diǎn)：無(wú)須模具，變形阻力小，工件形狀簡(jiǎn)單，大型鍛件常用方法，單件，小批量生產(chǎn)。按照業(yè)務(wù)領(lǐng)域分為一次加工（采用冶煉得到的鑄錠或金屬熔體，獲得板材和各種型材，作為進(jìn)一步加工的原材料，這屬于冶金加工范圍。 塑性成形分冷成形、溫成形和熱成形。其中突出的優(yōu)點(diǎn)為內(nèi)部組織得以改善，性能提高。s toys, motor vehicle, household appliances, puter and its accessories, etc have a type (shell) items, all depend on material molding technology made out. It is simple to understand the process principle of it is a choice materials, mould forming, the products. It is a involve machine, the material, the control gave three subject of interdisciplinary professionals. The professional main course are: material mechanics, physical chemistry, metal science and heat treatment principle, transmission principle, pressure processing technology and die, metal solidification and control, welding, metallurgy, metal plastic forming principle, material molding the puter simulation and so on, to learn the course has the certain difficulty, but because of the design appearance to drift and fine quality products of light as the goal, material molding course also contains the content such as drawing, artistic modelling, in practice to development and design, thus learn up is not boring. Along with the puter technology is more and more widely applied to material molding and control in the field, with puter aided d
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