山東快速成型技術(shù)通過(guò)與精密鑄造、機(jī)械加工等制造手段相結(jié)合，已經(jīng)成為模型和零件制造的有效方法，在航空、汽車(chē)、電子、軍事裝備、建筑模型等領(lǐng)域得到了廣泛應(yīng)用。下面就來(lái)講講快速成型技術(shù)在熔模精密鑄造中的應(yīng)用內(nèi)容吧。

Shandong rapid prototyping technology, combined with precision casting, machining and other manufacturing means, has become an effective method for model and part manufacturing, and has been widely used in aviation, automobile, electronics, military equipment, building models and other fields. Let's talk about the application of rapid prototyping technology in investment casting.

選擇性激光燒結(jié)技術(shù)

Selective laser sintering technology

選擇性激光燒結(jié)技術(shù)成型過(guò)程與零件的復(fù)雜程度無(wú)關(guān)，是真正的自由成型。SLS幾乎可以成型任意幾何外形的零件，對(duì)中空結(jié)構(gòu)（hollowedareas）、槽中套槽（notcheswithinnotches）及懸臂結(jié)構(gòu)（overhangs）等結(jié)構(gòu)的零件成型特殊有效。

The forming process of selective laser sintering technology has nothing to do with the complexity of parts, and it is truly free forming. SLS can form parts with almost any geometric shape, and is particularly effective for forming parts with hollow structures, notches within notches and overhangs.

選擇性激光燒結(jié)通常采用塑料、金屬、陶瓷的粉末作為成型材料。其工藝過(guò)程是：先在工作臺(tái)上鋪上一層粉末，在計(jì)算機(jī)掌握下用激光束有選擇地進(jìn)行燒結(jié)（零件的空心部分不燒結(jié)，仍為粉末材料），被燒結(jié)部分則固化在一起構(gòu)成零件的實(shí)心部分。一層完成后再進(jìn)行下一層，新一層與其上一層牢牢地?zé)Y(jié)在一起。全部燒結(jié)完成后，去除多余的粉末，便得到燒結(jié)成的零件。

Selective laser sintering usually uses plastic, metal and ceramic powders as molding materials. The technological process is as follows: first, a layer of powder is laid on the workbench, and then the laser beam is used to selectively sinter (the hollow part of the part is not sintered, but is still powder material) under the control of the computer. The sintered parts are solidified together to form the solid part of the part. After the completion of one layer, the next layer shall be carried out, and the new layer shall be firmly sintered with the previous layer. After all sintering is completed, the excess powder is removed to obtain the sintered parts.

選擇性激光燒結(jié)采用PSB粉料在熔模精密鑄造上的應(yīng)用

Application of PSB powder in investment casting by selective laser sintering

目前，熔模精密鑄造在生產(chǎn)結(jié)構(gòu)復(fù)雜，用模具幾乎無(wú)法實(shí)現(xiàn)產(chǎn)品時(shí)通常采用快速成型制作其生產(chǎn)所用的蠟?zāi)?。采用選擇性激光燒結(jié)與熔模精密鑄造結(jié)合在一起解決生產(chǎn)難題的方法已經(jīng)得到了很好的應(yīng)用。即用PSB粉燒結(jié)成的零件用毛刷及其它專用工具將零件上的浮粉，終用壓縮空氣將殘余的粉末吹掉。

At present, when the production structure of investment casting is complex and the products can hardly be realized with the mold, the wax mold used in the production is usually made by rapid prototyping. The method of combining selective laser sintering with investment casting to solve production problems has been well applied. That is, the floating powder on the parts sintered with PSB powder is removed with a brush and other special tools, and the residual powder is finally blown off with compressed air.

說(shuō)明：激光功率的大小影響成型零件的強(qiáng)度和變形，激光功率高，成型零件的強(qiáng)度高，但激光功率過(guò)高在燒結(jié)過(guò)程中會(huì)引起變形，一激光功率設(shè)定為12.5～15W（實(shí)際激光功率設(shè)置參數(shù)近似為總功率百分比，所以10～20W大致對(duì)應(yīng)為20%～40%）。

Note: the size of laser power affects the strength and deformation of formed parts. High laser power has high strength, but too high laser power will cause deformation during sintering. The first laser power is set to 12.5-15w (the actual laser power setting parameter is approximately the percentage of total power, so 10-20w roughly corresponds to 20% - 40%).

快速成型技術(shù)在熔模精密鑄造中的應(yīng)用相關(guān)內(nèi)容就到這里了，如果您對(duì)此有什么疑惑或者說(shuō)什么想法，都可以來(lái)我們網(wǎng)站http://www.debangboya.com咨詢了解更多。

This is all about the application of rapid prototyping technology in investment casting. If you have any doubts or ideas about this, you can come to our website http://www.debangboya.com Consult to learn more.