外文资料翻译 系 别 XXXXXXX 专 业 XXXXX 班 级 XXXX 姓 名 XXX 学 号 XXXXX 指导教师 XXXXXX 2010年4月Compression casting craft and compression casting mold design main pointAbstract: The die-casting machine, the mold and the alloy three, take press the casting as this, among the compression casting craft penetration, their conformity is organically a effective system, causes the die-casting machine and the mold obtains the good match, plays the optimization to press the casting structure, the optimal die-casting machine, the optimization presses the mold design, enhances the craft operating point the flexible role, thus provides the reliable guarantee for the compression casting production.Therefore, the compression casting craft lies within in the mold saying, depth of the connotation is self-evident.Key word: Die-casting machine; Mold; Compression casting craft; The mold designs1.Die-casting machine - mold - alloy systemDie-casting machine, the mold and alloy these three factors, in presses in the casting production process, they constituted a system, namely the die-casting machine - mold - alloy system, it is take presses the casting as this, among the craft penetration, entrusts with the system vigor and the efficiency, but the mold is the craft enters the system the platform.The die-casting machine, the mold and the alloy three relations expressed vividly as shown in Figure 1.The die-casting machine - mold - alloy system main performance is: (1)Ingate position influence backfill metal melt flow direction and the condition, with the backfill die space quality, have the decisive influence to the mold structure and the craft, this is the key is at. (2)Designation best sufficient time, this is extremely important one step, affects to sufficient time metal melt rate of volume flow (Q), also is the sufficient power, according to the above and computation ingate size. (3)Choice exhaust, overflow position and size, except outside normal exhaust, pollution discharge and temperature balance, but also may reduce the impact pressure, avoids the metal splashing and producing the burr.(4) Heating and cooling, balanced mold temperature, maintenance operating temperature.2.Compression casting crafts and the mold design key technologies When compression casting the ingate position influence presses the casting the structural design, the quality and the compression casting mold design, may obtain the correct establishment ingate position prompt through the inquiry material.As a result of the casting structure multiplicity, must choose the ingate the correct position is very difficult, but also has some basic requests, like thought generally the establishment ingate must cause sufficient when the metallic jet has as far as possible compared the long distance by the open jet in the die space average, also is the correct ingate position, the shape, the size (flows to angle) to coordinate the compression casting parameter to be possible to obtain the metallic jet to expand along the wall unceasing order, to change, and continuously expands to the terminus.The die space majority (i.e. branch die space) completes by the jet flow backfill, only then a small part of die space (i.e. non-branch die space) by the metal melt branch supplemented completes or collides by the metal melt stock class completes the backfill, and overflows the system elimination vestiges through the platoon.Figure 2 is in the pouring position and branch die space schematic drawing 1”.The identical pressure casting choice different ingate position and flows to the angle, when may obtain the area percentage which the different branch die space, the non-branch die space and hold respectively, Figure 2 the shell compression casting, because the ingate position is different, obtains the different branch die space and the non-branch die space.The chart 2a ingate is vertical to one side wall, because the components crown long square edged orifice separates two sidewalls, the result is only then one side for the branch die space; Must fill another one side wall, must pass through the running channel both sides attachment point, the final two liquid flow gathering completes the packing, this part is the non-branch die space.Because the branch die space accounts for the area percentage not to be high, therefore can produce the massive waste products, like chart 2a1.In chart 2b, the ingate position does not make the change, only is wall thickness and so on crown rectangle Kong Yong craft muscles connects, like this fills when the metal melt changes, fills another one side wall along the muscle board, caused two sidewalls both to become the branch die space, increased the branch die space to account for the percentage, the casting quality also large scale enhances, like chart 2b1.In chart 2c, the components and chart 2a are same, the crown square ed