| The primary mill rollers and the working
roller of section mill and heavy mill are always in the
working environment of high temperature, heavy loading,
and severe wear. Therefore, the large maintenance will have
bad impact on the production.
However, the rollers repaired with Weldclad welding technology
are more resistant in wear, and are the 3-4 times life than
new rollers. Weldclad welding alloy has the good performance
of resistance in crack except wear. So, this reduced the
time for grinding and machining , and reduced the times
of replacement and production cost, so at last , the production
efficiency has been improved and quality also improved.
The welding for primary mill and section mill rollers can
be made to the certain passes, and the passes can be resistant
in wear. And meanwhile, we can also welding the whole section
mill rollers, and make the rollers have much longer life.
The rollers after clad can have the tonnage 1.7-2.3 million
tons, about wear only 1mm every tonnage 25,000-28,000 tons.
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