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

When rolling clock spring and sheet parts of steel, non-ferrous metals and alloy materials, using cemented carbide roll instead of steel roll can significantly reduce the friction during rolling, so as to obtain a smooth surface, reduce defects such as workpiece scratch and adhesion, and improve the wear resistance dozens of times. However, in order to widely use cemented carbide roll, in addition to the limitations of the material itself, the most important thing is that the working surface of cemented carbide roll requires high precision and smoothness.

Precautions for Installation of Cemented Carbide Roll 2

Installing steps

Cemented carbide roll ring is a tool material with high hardness and high wear resistance composed of tungsten carbide and bonding metal. To make cemented carbide roll ring give full play to its advantages of high wear resistance, long service life and high efficiency in high-speed wire rod rolling, we need to pay attention to the following matters during installation:

1. Roll matching: on the same frame, the warp difference of the same roll shall be 0, no more than plus or minus 0.05mm

2.Before installing the roll, the roll ring and cone sleeve shall be kept warm at a constant temperature of 25-30 ℃, and the roll shaft shall be poured with hot water or idled for 20 minutes to preheat.

3.The insert sleeve and upper machine assembly of the roll ring shall be carried out in strict accordance with the accuracy required by the design process. The roll ring shall be properly matched with the roll shaft and cone sleeve of the frame, and shall not be too tight or loose?

4. Before starting the machine, check whether the roll ring meets the requirements, and the assembly surface of the roll ring, cone sleeve and shaft shall be carefully scrubbed. It is strictly prohibited to knock the roll ring with a hammer or other hard objects when starting the machine. It is strictly prohibited to collide with each other during transportation and installation to prevent damage to the roll ring.

Introduction of cemented carbide roll

Precautions for Installation of Cemented Carbide Roll 3

1.Cemented carbide roller ring (also known as tungsten carbide roller ring) has superior performance, stable quality, high machining precision, good wear resistance and high impact resistance.

2.Cemented carbide roll is made of tungsten carbide and cobalt by powder metallurgy. Cemented carbide roll has two types: integral type and combined type.

3.Cemented carbide roll has high hardness, and its hardness value changes little with temperature. The hardness value at 700 ℃ is 4 times that of high-speed steel; The elastic modulus, compressive strength, flexural strength and thermal conductivity of tool steel are more than twice higher than those of tool steel. Due to the high thermal conductivity of cemented carbide roll, the heat dissipation effect is good, and the high temperature reaction time between roll and harmful impurities in cooling water is short. Therefore, cemented carbide roll is more resistant to corrosion and cold and hot fatigue than tool steel roll.

Precautions for Installation of Cemented Carbide Roll 4

Brief intro of our company

Meetyou cemented carbide is a well-known cemented carbide processing and production enterprise in China. The company mainly produces and sells cemented carbide molds, cemented carbide plates, cemented carbide disc cutters, cemented carbide round rods, cemented carbide balls, cemented carbide rollers, cemented carbide ball teeth, cemented carbide punch needles, non-standard special-shaped alloy processing, etc.

You can also customize all kinds of cemented carbide molds, cemented carbide drawing molds, tungsten steel punching needles, tungsten steel spare parts, and non-standard customization of all?tungsten steel products.Precautions for Installation of Cemented Carbide Roll 5

Schreibe einen Kommentar

Deine E-Mail-Adresse wird nicht ver?ffentlicht. Erforderliche Felder sind mit * markiert.

黑人插中国女人逼| 在线观看国产日韩欧美一区二区| 日本美女阴户射尿| 东京热无码AV一区二区三区| 巨屌抽插舔阴视频| 玩弄邻居少妇呻吟11p| 欧美 日韩 激情 在线| 大鸡巴操屁眼无码| 国产免费好大好硬| 插欧美美女逼逼逼逼| 黑人大鸡巴日小逼| 蜜臀av一区二区三区免费观| 尤物性生活午夜在线视频| 插到底啊啊啊视频| 日本最新免费不卡一区二区三区| 中文字幕在线观视频| 大鸡巴插美女小逼逼| 非洲大鸡巴操逼黄色录像| 日韩午夜免费av在线| 操美女干逼调教捆绑视频| 男人大鸡巴操女人的大逼| 老狼精品卡1卡2卡3网| 亚欧日韩国产在线| 美女日逼视频免费| 一级毛片完整版免费播放一区| 69亚洲一级黄片| 欧美男女舔逼舔鸡巴视频| 一级毛片完整版免费播放一区| 99国产精品一区二区| 亚洲高清中文字幕一区二区三区| 午夜性刺激在线视频免费| 曰木高清免费一本| 女人的骚逼免费视频| 在线观看免费视频a v| 中文字幕一区二区 在线| 欧美一区二区三区四公司| 久久精品伦一区二区三区| 美女爽的嗷嗷叫免费| 嗯嗯嗯啊啊啊好湿好痒好多水视频| 几巴怪物操逼视频| 操国产骚逼逼逼逼逼逼逼|