Florida2021
Register | Agenda| Exhibit
 
London 2020
 
Odessa May 21-22, 2021

Register by
February 24
and save EUR € 320!

It is currently Tue Nov 24, 2020 11:32 pm


Dating Industry and Matchmaking Industry Forums

Business Message Board for the Dating, Online Personals, Social Dating, Mobile Dating, Dating Affiliate and Matchmaking Industry

All times are UTC




Bookmark This Topic   Delicious   Digg   Reddit   Furl   Facebook   Technorati

Post new topic Reply to topic  [ 2 posts ] 
Author Message
PostPosted: Fri Oct 30, 2020 7:30 am 
Offline

Joined: Wed Oct 14, 2020 9:34 am
Posts: 4
Vacuum and vacuum heat treatment

The so-called vacuum is a gaseous space with a pressure lower than 101.3kPa (1 atmospheric pressure). The concavity and convexity of the vacuum degree is indicated by the pressure size of the gas space, that is, the higher the vacuum degree, the lower the pressure.

In operation, the vacuum degree of electric furnace is often divided into three levels: low vacuum, pressure is 1.33x103-13.3pa; medium vacuum, pressure is 13.3-1.33x10-2pa; high vacuum, pressure is 1.33x10-2-1.33x10-4pa. Now, most vacuum heat treatment furnaces use vacuum degree of 133-1.33x10-3pa

The so-called vacuum heat treatment means that all or part of the heat treatment process is carried out in vacuum. In practice, vacuum is regarded as a kind of protective gas with high purity, which can effectively avoid the reaction of oxidation and decarburization at high temperature, improve the surface quality of heat treatment or improve the effect of chemical heat treatment.

Now, vacuum heat treatment has been used in quenching, annealing, tempering, carburizing, nitriding, metallizing and other surface hardening, surface alloying and other processes. In terms of quenching, gas quenching, oil quenching, nitrate quenching and water quenching have been completed.

The primary equipment to obtain vacuum is the vacuum pump. Vacuum pumps commonly used in vacuum heat treatment furnace include rotary vane mechanical vacuum pump, slide valve mechanical vacuum pump, mechanical booster pump, oil booster pump and oil dispersion pump. The first three kinds of pumps are mechanical vacuum pumps, and the latter two are oil vapor vacuum pumps.

[url=https://www.evpvacuum.com/water-ring-vacuum-pump-type.html]Water Ring Vacuum Pump[/url]

[url=https://www.evpvacuum.com/dry-scroll-vacuum-pumps.html]Dry Scroll Vacuum Pump[/url]

[url=https://www.antsalliance.com/]industrial vacuum pumps,vacuum furnaces[/url]


Top
 Profile  
 
PostPosted: Mon Nov 02, 2020 9:53 am 
Offline
Active-iDate-User

Joined: Mon Nov 02, 2020 7:38 am
Posts: 5
Sound's Good!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 6 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group

phpBB SEO

iDate was mentioned in:


Boston Herald
Gulf Times
Vice
InStyle Magazine
The Christian Science Monitor
Jewish Journal
The Pappas Post
Wall Street Journal

FUTURE INTERNET DATING & DATING INDUSTRY CONFERENCES


Copyright © 2003-2020 Internet Business Conferences LTD All Rights Reserved
Questions? Telephone: +1 (212) 722 1744 X 71

  • Furl
  • Digg
  • Facebook
  • Technorati
  • Delicious
  • facebook
  • friendfeed
  • linkedIn