contact@sydensen.com

Large forgings forging after heat treatment

Views: 5     Author: Site Editor     Publish Time: 2016-11-09      Origin: Site

Immediately after forging, the heat treatment is called heat treatment after forging.Main aim of the large forging after heat treatment is to stress, recrystallization fine grains, and hydrogen at the same time.
 
(1) the recrystallization process of large forgings after many recrystallization processing, make the grain refinement, organization improvement, performance was improved.
 
(2) to the forging of hydrogen hydrogen annealing low limit of hydrogen content in the following, and make it uniform distribution, by removing the white dots, the risk of hydrogen embrittlement.
Large forgings forging after heat treatment
Due to hydrogen in the y phase, 6 c phase solubility and diffusion coefficient is different, in particular the hydrogen solubility in the phase is low, and the diffusion coefficient is big, this makes the outward unceasingly in hydrogen diffusion in the process of annealing.
 
Tend to hydrogen annealing merged with recrystallization.To hydrogen annealing temperature is usually at 650 ℃.Should as far as possible the slow cooling after annealing, to prevent to produce new internal stress.General cooling can be divided into two phases:
Large forgings forging after heat treatment
Above 400 ℃, due to steel plasticity is good, not easy to form internal stress, so the cooling can be faster;400 the following, cooling speed will slow down.
 
For more alloy elements and high performance requirements of forging, forging requirements for one or more recrystallization after heat treatment, in order to improve the organization and performance of forgings.

  • Q Are you a manufacturer or a trader?

    A
    We have our own foundry ,forging factory and machinery shop located in Liaoning Province, China.
  • Q What can you do for customer?

    A
    One Stop Service
    1).Manufacturing and supply various machinery parts.
    2). Technical analysis and design 
    3).Factory audit, on-site production supervision, in-time feedback, pre-shipment quality inspection
  • Q How could you commit the product quality?

    A
    1) all our factories were ISO certified. 
    2) more than 50% of New Densen’s products were sold to worldwide top 500 companies 
    which located in North American, Western Europe, and Japan.
    3) New Densen’s QC engineers will do on-site supervision and before EX-work quality inspection. New Densen will issue inspection reports for customers’ approval before EX-work. New Densen will be responsible for its reports and every parts no matter how long sold to customers.
  • Q How long shall we get the quotation?

    A
    Processing time for inquiry: 1-3 working days.
  • Q What's the process of developing a new steel casting product?

    A
    The procedure for new project develop as below:
    1. Technical department analyze the drawings all details 
     
    2.Pattern design and manufacture
     
    3.Casting Process
     
    4.Quality Control inspect the casting parts
     
    5.Issue inspection report for customer to check quality
     
    6. After inspection report approved, Logistics Department help arrange the shipping to customer