Stainless steel chain products are used very widely.
Are these chains really safe? |
| What's the TIG welding? |
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Table 1 SUS304 Wire diameter 5mm chain
Tensile test results
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| Table 1 shows that chain with a remarkably low breaking load is being sold. |
| Their external appearances are similar, so why are the test results so different? |
See the sectional photographs of the weld sections.
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Photograph 1
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Photograph 2
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After the weld section is cut and
the cutting plane is washed with acid,
the color of the welded part changes. |
Sectional photograph of weld section
of chain made by our company |
Sectional photograph of weld section
of imported chain made by C |
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* The discolored part in the center is the weld section. |
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Photographs 1 and 2 are sectional photographs of weld sections.
Comparing photographs 1 and 2 shows that the fusion depth of the weld section is shallower.
The fusion depth is shallower, which means that the chain link is not fully connected. |
Tensile test sample
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Photograph 3
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Photograph 4
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| Chain made by our company after tensile test (Break location is on the end at the left.) |
Imported chain made by C after tensile test (Break location is on the end at the left.) |
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Photo 4 shows that the chain broke before being stretched.
A chain is made by connecting individual links. Each link must be securely welded.
If the welding of even one link of a chain is defective, it can cause a truly disastrous accident. |
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| About Tensile test machine |
MM brand chain with confidence and proven results
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