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:www.giteme.com  
Address:No.1, Wankun Road, Xibei Town, Xishan DIstrict, Wuxi City, Jiangsu     
主站蜘蛛池模板: 2019国自产拍| 高中女无套中出17p| 亚洲娇小与黑人巨大交| 中文字幕久精品免费视频| 免费又黄又裸乳的视频| 又粗又猛又黄又爽无遮挡| ass日本丰满熟妇pics| 老太婆性杂交欧美肥老太| 亚洲精品无码mv在线观看| 国产草草影院ccyycom| 国产无遮挡又黄又爽在线视频| 久久人人爽人人爽人人片ⅴ| 欧美黑人性暴力猛交喷水| 日本大乳高潮视频在线观看| gogo全球大胆高清人体444| 国产在线精品一区二区在线看| 午夜天堂精品久久久久| 我的乳在厨房被揉搓| 亚洲av无码之国产精品| 国产av无码专区亚洲awww| 亚洲情综合五月天| 久久久久免费看成人影片| 长腿校花无力呻吟娇喘的视频 | 亚洲av无码精品色午夜蜜芽| 草草浮力影院| 人妻av一区二区三区精品| 日韩av中文无码影院| 亚洲性久久久影院| 无码人妻黑人中文字幕| 国产成人精品午夜2022| 欧洲美女黑人粗性暴交视频| 性无码专区无码| 潮喷取精10次gay在线观看| 欧美一区二区三区啪啪| 四虎影视久久久免费| 老师喂我乳我脱她胸罩| 2022精品久久久久久中文字幕| 国产精品禁18久久久夂久| 女被男啪到哭的视频网站| 国产乱子伦精品免费视频| 国产免费久久精品99久久|