Questions tagged [metal-folding]

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15 votes
2 answers
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How do I size metal plates to get the correct dimensions after folding?

I am designing a metal plate that will be laser-cut (or machine-cut) and then folded. I want to know how to size the pre-folded plate in order to get the right dimensions after folding. My actual ...
jhabbott's user avatar
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3 votes
1 answer
251 views

Folding of thin gauge metal sheets

I would like to fold thin metal sheets to a particular angle. For example: fold a 0.1mm thick steel strip of width 20mm and length 150mm to an angle of 45° along its length (10mm panels on each side ...
atom44's user avatar
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2 votes
1 answer
65 views

Metal sheet forming - material properties when switching material

What does one have to look out in material properties when changing material grade in cold sheet forming operation (example: from DC04 to DC03 or to DC01). Operation is mostly made of 90°bends and ...
branexius's user avatar
2 votes
1 answer
127 views

Coating gold on to sunglasses lenses?

Recently I have been trying to find out more about the process that is used to coat glasses lenses with gold. I asked about it in another forum last night and I was directed here. I initially thought ...
gowekj sergfg's user avatar
2 votes
0 answers
41 views

Springback in carbon/HSLA steel - cold forming

What are the measurements denoted on top of the YS-t steel lines? Material thickness or bend radius? ...
branexius's user avatar
2 votes
3 answers
139 views

Understanding metalwork manufacture -- How are Purchase Quotations prepared?

I have been involved with a number of metalwork design projects lately and I'm increasingly finding myself asking for quotations for small prototype runs (often one-off jobs) to verify the validity of ...
user avatar
1 vote
3 answers
239 views

What is the cheapest way to build a fireproof box?

I'm breaking my brain for a two weeks trying to find a way to build a fireproof box 100 cm × 100 cm × 100 cm with 1 door at the cheapest price. The immediate candidate is sheet metal, which needs to ...
Simon's user avatar
  • 115
1 vote
1 answer
92 views

How to form steel truck fenders [closed]

I want to set up steel truck fenders production line, but have no idea how to do that. Something like this picture. Edit1: I have two plans to form final curved shape , using a hydraulic press or ...
bryan c's user avatar
  • 113
1 vote
1 answer
26 views

How can we tell if a press mold need more stages?

I was asked to design a simple press mold for a 0.5mm sheet metal part. It has some small but rather deep sinks (5-7mm) which has made me wondering if it can be done in a single stage or it needs more ...
2012User's user avatar
  • 131
1 vote
1 answer
151 views

Bendable flaps on sheet metal

I'm trying to cut some bendable flaps on aluminium sheets for hooking/clipping onto some fabric. The flaps I have in mind look like this: Are these common features? Does anyone know the geometry of ...
John M.'s user avatar
  • 1,033
0 votes
1 answer
110 views

Why do blacksmiths use these 2 tools which seem to do the same thing

In this video and in many others I've seen, smiths use 2 different "hammers" to forge metal together. One seems to hit it repetitively with less force (0:30 in the video) while the other &...
ExtraFishness's user avatar
0 votes
2 answers
2k views

Will laser cutting render my galvanized sheet metal susceptible to corrosion?

Firstly, pardon my ignorance about this topic because I am an electronics engineer. I designed a 3 mm thick mounting bracket for one of my products. For this, I need to cut a galvanized metal sheet ...
C K's user avatar
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0 votes
1 answer
83 views

How to evenly heat stainless type 304 steel bar to approximately 200F?

I need to heat stainless bar stock prior to bending in a forming machine. I would like to reach approximately 200 degrees F. The material is stainless type 304/304L, 3/16" thick. We are heating ...
PMetal's user avatar
  • 1
0 votes
1 answer
127 views

Fire rated EN 13501-1 B-s1/s2, d0 sheets

I'm trying to learn more about the type of sheets I can get for a project, I would of course go for polycarbonate if not for its price, currently the project with PC will cost \$600-\$700 but I'm ...
Simon's user avatar
  • 115
0 votes
1 answer
910 views

Bending a concave sheet metal lip in AutoDesk Inventor

I am trying to bend this sheet metal concave lip inside the electrical box. I also need the top of the bent part below the top edge of the outside of the box.
JaredWolf's user avatar
0 votes
1 answer
36 views

How are sheet metal enclosures closed with screws?

I need to design an aluminum enclosure for some electronics, but I have no idea how to screw the different pieces together. I have settled for a folded box design with a top, but I can't figure out ...
Jambon's user avatar
  • 3
0 votes
1 answer
34 views

How to CAD: smooth width transition in sheet-metal bends

I am working with FreeCAD 0.20 and Sheet Metal work bench 0.2.63, but universal CAD tips are also welcomed. As shown in the image, I would like to bend sheet metal with smoothly chancing width along ...
Imsa's user avatar
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0 votes
0 answers
32 views

Bend a metal strip to a different axis

How can I bend a metal strip (3 inches x 3 feet x 1/32th) in a different axis? I know it would need a few compound bends, but can't figure out the math. Preferably straight vends instead of just ...
cde's user avatar
  • 305
0 votes
0 answers
31 views

How to shape sheet metal like Willys hood latch?

I am want to produce Willys' hood latches like links below Hood latch link 1 Hood latch link 2 Hood latch link 3 What kind of metal shaping process is this? Even I could not figure the mold out.
meakcey's user avatar
0 votes
0 answers
517 views

Which K-factor (metal bending) is defined first, ANSI or DIN?

Description We had been through several issues with K-factor handling of two teams due to the same name assigned by different standards. ANSI and DIN has defined the same term for the same purpose. ...
ceremcem's user avatar
  • 215
0 votes
1 answer
83 views

Kfactor for laminated steel plates rolling

I need to make a flat pattern for a cylinder made from a steel plate 44mm thick laminated with explosion cladding stainless steel plate of 8mm total plate thickness is 52mm. How I usually work is ...
Mech_Engineer's user avatar
0 votes
1 answer
93 views

Understanding plastic deformation

Is understanding tensors a prerequisite for understanding plastic deformation (metal forming) equations, plane stress, plane strain conditions, etc..? If so which book should I use to understand ...
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