а天堂中文地址在线-无码区a∨视频体验区30秒-六十路高龄老熟女m-激烈的性高湖波多野结衣

?
Welcome to Sofu lubrication technology (Jiangsu) Co., Ltd
Contact us
hotline
0510-8378 5699
Address : No.1, Wankun Road, Xibei Town, Xishan DIstrict, Wuxi City, Jiangsu
location:Products >  english > 
Quench oil
time:2018-05-04
1.     Concept of Quench oil

Heat treatment is a process in which the metal material is kept in a solid state, heated to a specified temperature, and after a period of heat preservation, the process of cooling and reheating the metal within a specified time; a metal thermal processing technology is obtained by heat treatment to obtain the expected structure and properties of metal.
 

Quenching oil is a cooling medium needed for heat treatment of metallic materials, and it is a kind of processing oil.
 
2.     Characteristics of quench oil
 

Good cooling performance

Cooling performance is an important performance of quenching oil, its quality directly affects the quality of quenching parts. Good cooling performance can ensure that the parts after quenching have certain hardness and qualified metallographic structure, which can prevent parts from deforming and cracking.

High flash point and ignition point

When quenching, the temperature of oil will increase instantaneously. If the flash point and ignition point of oil are low, it may cause fire. Therefore, quenching oil should have high flash point and ignition point. Usually, the flash point should be 60-80℃higher than the use of oil temperature.
 

Good thermal oxidation stability

The quenching oil is used in the harsh conditions of high temperature and continuous operation for a long time. It requires oil products to have good anti-oxidation, thermal decomposition and anti aging properties, so as to ensure the cooling performance and service life of the oil.
 

Low viscosity

The viscosity of oil is related to its adhesion, carrying loss and cooling performance. Under the premise of ensuring the cooling performance and flash point of the oil, the viscosity of the oil should be as small as possible, so that it can not only reduce the carrying loss, but also facilitate the cleaning of the work piece.

Low content of water

Excessive moisture in oil products will affect the quality of heat treatment of parts, causing soft spots, quenching or cracking of parts, or oil spattering and accidents. The general provisions require that quenching oil in water content shall be not more than 0.05%.
 

Other characteristics

Besides the above characteristics, quenching oil should also be non-toxic, tasteless, easy to handle, pollute the environment, and make the surface of the hardened work piece bright.

Cutting fluidROLLING OIL

Copyright © 2018 Sofu lubrication technology (Jiangsu) Co., Ltd All Rights Reservrd
Sales department: :Mr Zhu 18114866558  Tel:0510-8378 5699  Fax:0510-5378 5689  Website:m.giteme.com  
Address:No.1, Wankun Road, Xibei Town, Xishan DIstrict, Wuxi City, Jiangsu     
主站蜘蛛池模板: 中文人妻av高清一区二区| 奶头和荫蒂添的好舒服囗交| 人妻中文字幕无码系列| 国产帅男男gay网站视频| 亚洲av中文无码乱人伦在线视色| 久久精品国产一区二区三| 麻豆国产97在线 | 欧美| 麻豆一区二区99久久久久| 国产真实乱对白精彩| 国产精品99久久久久久人| 免费观看黄网站| 国产精品对白交换视频 | 亚洲欧美精品suv| 国产网红女主播精品视频| 久久精品国产清高在天天线| 一区二区三区精品视频免费播放| 久久久久久国产精品mv| 亚洲av无码国产精品色午夜 | 公交车被cao得合不拢腿视频 | 天堂在线www天堂中文在线| 亚洲av中文无码乱人伦在线r▽ | 日本japanese丰满少妇| 强制高潮18xxxxhd日韩| av无码国产在线看免费网站| gogo亚洲肉体艺术欣赏图片| 无码少妇一区二区| 欧美日韩中文国产一区| 国产免费观看av大片的网站| 天天躁夜夜躁狠狠是什么心态| 国产欧美日韩精品a在线观看| 天堂资源最新在线| 自拍偷自拍亚洲精品情侣| 国产精品视频二区不卡| 女人被狂躁c到高潮视频| 久久强奷乱码老熟女| 亚洲大成色www永久网站| 久久久久99精品成人片试看| 天天做天天躁天天躁| 国内精品九九久久久精品| 国产亚洲欧美精品永久| 亚洲中文字幕久久久一区|