- 上一篇：塑料注射模具设计英文参考文献和中文翻译
- 下一篇：注射成型模具设计英文文献和中文翻译
At present this technology widely uses in superficial shape and so on airplane, automobile mold, electrical appliances, furniture, shoemaking, fine arts handicraft is complex and the pattern fine each kind of polyurethane product blow molding, attracts models, the PVC injection, PU becomes spongy and each kind of injection takes shape in the mold.
2.2.2 electrolytic castings take shape the technology
The electrolytic casting takes shape the technical principle to be same with the galvanization, is according to model the mold (ready-made product or female mold which makes according to product blueprint) is the datum (negative pole), places in the electrolytic casting fluid (anode), causes in the electrolytic casting fluid the metallic ion to return to original state a latter place deposition on the type mold, forms the metal shell, after strips it, contacts the surface with the type mold namely for the mold the cavity internal surface.
This technical main characteristic is saves material, the mold manufacture cycle short, electrolytic casting level degree of hardness may reach 40HRC, enhanced the resistance to wear and the life, roughness, the size precision is completely consistent with the type mold, is suitable for the injection, attracts models, the blow molding, keeps out models, mold cavity and the electric spark and so on bakelite mold, glass mold, compression casting mold takes shape the electrode manufacture.
2.2.3 cavities surfaces fine pattern takes shape etching technology
The etching technology is optics, chemistry, the machining synthesis application one kind of technology, tis basic principle is makes first the pattern design the film, then it has spread the film on pattern design duplication the photosensitive material on the mold cavity surface, process chemistry processing, the mold cavity surface does not form by the etching partial protectors, then acts according to the mold material quality, the choice corresponding etching craft, pattern design etching in mold internal surface.
This technical main characteristic is the time short, the expense is low, patching damages the pattern design to be possible to achieve flawlessly.
2.3 sprinkle to cast into the type system mold technique
Sprinkling to cast into technical and common 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.
2.3.1 tin metal alloy sytem mold technique
The tin metal alloy makes the mold technique quickly is a basis through the kind piece, with total metal alloy of (the orders 138℃s, the bulge rate is thousand times it three) of the Bi-Sn(tin of) two dollars for material, have the precise foundry of method at the same time a convex mold, cave mold, press a kind of technique of the side turn. Should the technical characteristics is to make the mold cost low, the metal alloy is re-usable, the manufacturing period is short, the size accuracy is high, the shape, size and the kind pieces agree with completely, a mold for casting life span can amount to 500-3000, very in keeping with new product development, craft verification, the sample manufacture on a trial basis and win small batch quantity peace.
2.3.2 zinc metal alloy sytem mold technique
This is a kind of to take the kind piece( or the kind mold) as the basis, with the order for 380℃s or so zinc metal alloys for material, sprinkle to note the convex and cave mold respectively, a surface does not carry on one kind sytem mold technique that th machine process in principle. The technique’s characteristics is to make the mold cost low, the period is short, being applicable to create the lamella large pull to stretch the mold and hurtle to cat the mold and plastics molds.
2.3.3 resin compounds model the molding tool technique
This is a kind of to take the kind mold( or the craft model) as the basis, taking resin or its compound materials as the fluid material, sprinkling the convex( cave) mold of outpouring first, again the convex( cave) mold of basis sticks up the wax slice( the cleft layer), sprinkling to note the convex( cave) mold. A surface that theat technique model does not need the machine to process. The that technique and CAD/CAMs combine together, the characteristics if the molding tool size accuracy high, the manufacturing period is short, the cost is low, is the new product manufacture on a trial basis, the small batch quantity produces the craft material of new path. Be applicable to the creation large overlay the piece to pull to stretch the mold( also can the part inset the steel), vacum to absorb the and gather the ammonia ester hair bubble to model the mold, porcelain and ceramics mold and imitate the type to depend the mold and cast mold etc.