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Member

Join Date: May 2010
Posts: 6

Quality in Kitchen Equipment

05/31/2010 1:15 AM

I want some tips about how to improve quality in Kitchen Equipments like Table tops,

Trolleys,and shelf which is made with Thin Stainless Steel.

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Engineering Fields - Electrical Engineering - Analog and Digital Circuit Design Engineering Fields - Electromechanical Engineering - Transformers, Motors & Drives, EM Launchers Engineering Fields - Engineering Physics - Applied Electrical, Optical, and Mechanical

Join Date: Jan 2008
Location: NY
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#1

Re: quality in Kitchen Equipments

05/31/2010 11:10 AM

Use thicker SS?

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Anonymous Poster
#2

Re: Quality in Kitchen Equipment

05/31/2010 10:48 PM

Check out Fronius CMT (cold metal transfer) for welding thin stainless steel. It is a great welding process for controlling distortion from welding heat: http://www.fronius.com/en/welding-technology/our-expertise/welding-processes/cmt. There are also several U-Tube videos to see the process.

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Power-User

Join Date: Nov 2006
Location: Chennai - India.
Posts: 273
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#3

Re: Quality in Kitchen Equipment

05/31/2010 11:14 PM

Please be specific about the quality improvements you are expecting in the kitchen equipments.

Is it about materials or welding process selection or to avoid distortion during welding or finish or ....

As for the materials, It could be AISI 302, 304 or 304L etc. (generally used)..

As for the welding process selection, Pulsed TIG Welding process is well suitable as it can take care of your thin sheets of 1.60/2.00 and up to 3.0 mm or so.

To avoid distortion, during the welding/fabrication, you require good fixtures, proper weld parameter selection like:

Appropriate current, voltage, welding speed depending upon the size of the electrode,

Maneuverability of torch if it is a manual process,

Position of welding (flat or down hand position is preferable)

Correct size of Tungsten electrode with 2% Th. (say 1.60 or 2.00 mm size is ideal)

Filler metal type (similar to base metal and ER 304L is good) and size (1.60/2.0 mm)

Right gas selection and flow rate for shielding and back purging (Argon with 2% O2 is better than pure Argon for SS) with 6-8-10 LPM flow rate,

Using good environmental conditions like - clean area, SS wire brushes & separate hand gloves to avoid contamination etc.

One problem you might have faced could be rust or rust particles in the post weld period/ during service, which could be due to contamination during welding or use of very high currents or general TIG welding process with out pulsing. (or)

High distortion/waviness - due to use of high currents and non pulsed TIG process.

Trust some of the above details will help you to improve the the quality of your kitchen equipment made of thin SS sheets.

Sridhar.

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Power-User

Join Date: Jun 2008
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#4

Re: Quality in Kitchen Equipment

06/01/2010 1:46 AM

The load carrying capacity of a thin flat sheet metal structure can support much more weight by spot welding intermediate hat stiffeners on the bottom the flat surface just as a thin weak metallic sheet when corrugated dramatically result in increase in strength many time over.

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Anonymous Poster
#5

Re: Quality in Kitchen Equipment

06/01/2010 9:37 AM

Dont buy your materials from china. If you want good quality buy American

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