Contact US

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!

*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

'How is it made?' - Metal production method?

'How is it made?' - Metal production method?

'How is it made?' - Metal production method?

I can' figure out,how this is produced?

My first thoughts:

High Energy hydroforming or Hydroforming, but making the inquiry, I received:

- Texture to fine...
- Cannot be demolded.... (outside has deboss/ inside emboss)

Does anyone a suggestion?

Thanks already,


RE: 'How is it made?' - Metal production method?

No one can tell you much unless you provide some dimensions and a target material.

RE: 'How is it made?' - Metal production method?

Sorry about that ;)

Dimensions are approximately 300mm diameter/ 75mm Height.
The granulation pattern (emboss) on the inside is about 2,5mm in diameter. Deboss on the outside.
Wallthickness +-1,5mm.
Made out of steel, epoxy powdercoating finishing.

Actually, it is kitchenware, not a wok, but a salad bowl.

Hope this can help to solve the puzzle ;)

RE: 'How is it made?' - Metal production method?

Metal spinning
Draw die, stamping


RE: 'How is it made?' - Metal production method?

Texture flat and then form

RE: 'How is it made?' - Metal production method?

Emboss flat, cut blanks, stamp with the plug having a urethane jacket to not damage the embossing.
Is the outer edge actually coated? Or did they precoat the sheet and leave that edge raw?
If the edge is coated they may have coated the circular blanks before forming.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: 'How is it made?' - Metal production method?

Hi Ed,

thanks, based on your reply, I believe it is the correct anwser:

- Emboss Flat
- Stamp with rubber pad / rubber Jacket on the plug >> https://en.wikipedia.org/wiki/Rubber_pad_forming

- Cut blanks
- Powder coating (Actually, there is a little tag mounted through the bowl's wall. The hole is used as suspension point when powder coating.)

Thanks again!


RE: 'How is it made?' - Metal production method?

IRS, I am sure that the sheet is roll embossed prior to forming.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close