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Model No. : | DN15-DN3000 |
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Brand Name : | WST |
Principle : | Regenerative Heat Exchanger |
Product description
Metal Types Pressing Of Pipe Elbow Joints,Hot-pressing elbow is used to change the direction of pipeline, so it is widely used, mainly used in chemical industry, civil, construction, industrial production, etc. The elbow is used in pipe turning a pipe. In the pipeline system used in all the fittings, the largest proportion, about 80%. Typically, different materials or wall thickness of the elbow choose a different forming process. Commonly used in manufacturing seamless elbow forming process with hot push, stamping, extrusion and so on.
The
concrete production method is that: the hot-pressing elbow is heating
the pipe to be processed by professional equipment, then cutting and
heating to above the critical temperature, and the heat preservation is
quickly put into the quenching agent after a certain period of time, so
that the temperature is suddenly reduced to be greater than the critical
cooling Speed rapid cooling method made of elbow.
One way to deal with: quenching
Quenching
is the elbow to the critical temperature above the insulation for a
period of time, and then quickly into the quenching agent, the
temperature suddenly reduced to greater than the critical cooling rate
of rapid cooling, and get martensite-based Heat treatment method of balance structure. Quenching can increase the strength and hardness of steel, but to reduce its plasticity. Quenching commonly used quenching agent: water, oil, alkaline water and salt solution.
The second approach: normalizing
Normalizing
is the hot-pressing elbow heated to above the critical temperature, so
that hot all the elbow into a uniform austenite, and then in the air
natural cooling heat treatment method. Normalizing
can eliminate in addition to eutectoid hot pressing elbow of cementite,
for sub-eutectoid hot-pressing elbow can be refined lattice, improve
the overall mechanical properties, the requirements of the elbow is not
high with normalizing Instead of quenching process is more economical.
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