×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

question of forging

question of forging

question of forging

(OP)
thread330-191256: Forging work ratio
Hi. Thankful for read my E-mail. Please guide me for my problem. We are producing ring tire for railway with hot forging according UIC 810-01 Standard with grade B2 ( material number: 1.1203). our process has four stages.
1) Initial shaft billet stock with size 40cm diameter and 40cm height, upsetting to 17cm height and 67cm diameter at 1200 centigrade temperature.
2) Then it is piercing in center of shaft axis and remove a shaft with size 20cm in diameter form pivot such as shaft convert to thick ring and it cooling to ambient temperature.
3)Then it reheating and perform hot rolling to obtain final dimensions at 1200 centigrade temperature with %54 reduction.
4) Finally it normalizing at 880 centigrade temperature.
We have a customer that stated on order "minimum reduction must be 4 to 1 from billet stock to final product" and he believe that "cooling after upsetting to ambient temperature is not permit and microstructure of work piece (after heat treatment) affected by reheating between stage 2 and 3?" please write for me, if it has technical justification and either your answer to be Yes or No please guide me how do I prove it mathematically or according which standard?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources