欧美人妻精品一区二区三区99,中文字幕日韩精品内射,精品国产综合成人亚洲区,久久香蕉国产线熟妇人妻

Last week we talked about HIP. This week our topic is cold isostatic pressing, one of the processing methods of P / M materials.

It makes use of the principle proposed by French scientist Bryce Pascal that “the pressure change of the closed incompressible fluid is transmitted to every part of the fluid and its container surface continuously”. The powder material is sealed in a molding die with low deformation resistance, and liquid pressure is applied like a rubber bag. Then, by transferring the liquid pressure, the die body is uniformly compressed on its entire surface.

Metal molding is very similar to CIP. In this pressing method, as shown in the figure below, the powder material is filled into a space surrounded by a metal mold and a down punch. Then, they are compressed by reducing the distance between the upper and lower punches.

Industrial metal molding equipment has a series of automatic processes from powder filling to mold removal. The single action press shown in the figure below compresses the powder into a shape with the lower punch fixed. Due to the friction between the powder and the metal die or punch, as well as between the powder particles, the lower part of the molding body will have a lower density than the upper part.

What is CIP(Cold Isostatic Pressing) 1

The difference between CIP and metal molding

In principle, they have different pressurization processes. CIP applies isostatic pressure to materials using liquid pressure, while metal molding is only applicable to uniaxial pressure. As a result, CIP can produce density and even products because there is no friction with the metal mold. The right figure compares the density distribution of CIP and metal molding products.

CIP processing type

According to the relationship between powder filled mold and pressure medium, CIP forming methods are divided into wet bag method and dry bag method.

Wet bag method

In the wet bag process, as shown in the figure below, the powder is filled in the forming mould and sealed outside the high-pressure vessel before being directly immersed in the pressure medium. Then, isostatic pressure is applied on the surface of the die to compress the powder. This method is suitable for small batch production and trial production of various complex shapes or large products.

There are two types of structure: the external pressurized type shown in the left figure, which pressurizes the pressure medium into the pressure vessel from the outside; the piston direct pressurized type shown in the right figure, which pressurizes the pressure medium sealed in the pressure vessel directly, and installs the piston instead of the top cover.

What is CIP(Cold Isostatic Pressing) 2

Dry bag method

The dry bag method is to transfer the pressure through the pressed rubber mold in the high-pressure vessel and fill the powder in the formed rubber mold, as shown in the figure below. The method is labor-saving and highly automatic, and is suitable for the production of simple and limited products.

The dry bag process is divided into two systems: the circumferential + axial compression system (left) and the circumferential compression system (right), as shown in the figure below.

The circumferential + axial pressure system applies pressure from the outer surface of the mold and the top surface of the cover type rubber pressing die, as shown in the figure below.

The circumferential pressurization system only applies pressure from the outer surface of the molded rubber mold through the cylindrical rubber pressing mold, as shown in the figure below. However, due to the fluid properties of the powder, the pressure applied to the green compacts is almost equal to isostatic pressure.

What is CIP(Cold Isostatic Pressing) 3
999久久久国产大美腿| 亚洲福利左线观看| 中文字幕av一区二区三区蜜桃| 另类亚洲欧美专区第一页| 操小骚逼高潮视频| 久久综合色伊人九色91| 人妻含泪让粗大挺进| 让女人下面出水视频| 中文无码av动作片| 免费的黄片很很操| 天堂丝袜人妻中文字幕在线| 美女被插进去黄色| 强奸啪啪啪好大欧美| 日本福利一区二区视频| 韩国女主播一区二区视频| 澳门一区二区免费下线观看| 欧美猛男一区二区三区快播| 欧美 日本 亚洲 国产| 少妇精品久久久一区二区免费| 91精品国产综合久久久蜜| 欧美一区二区三区色婷婷月色| 亚洲天堂成年人在线视频| 老头鸡巴操老太骚逼| 高清国产一区二区| 亚洲二亚洲欧美一区vr| 色哟哟精品视频一区二区| 色熟妇人妻久久中文字幕| 国产精品毛片一区视频播| 欧美一区二区三区身体| 黄色日女人逼视频| 男人草女人的骚逼逼| 夫妻性生活在线免费视频| 操我好舒服用力视频| 国产一区二区在线观看精品| 联系附近成熟妇女| 美女肏肏逼应用下载| 蜜臀AV无码国产精品尤物| 一区二区国产精品免费视频| 99国产精品一区二区| 中文字幕av一区二区三区哈| 美女麻豆颜色光屁股眼子|