Four-column type hydraulic machine
A hydraulic press, four-column technology, applied in the field of machine tools, can solve problems such as affecting the use of hydraulic presses, frequent use of hydraulic presses, and easy damage.
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[0014] The four-column hydraulic press of the present invention includes a column, an upper beam connected to the column, a lower beam and a movable beam, an upper anvil and a lower anvil below the movable beam, and a working cylinder, a return cylinder, a working plunger connected to the working cylinder, A return plunger connected to the return cylinder;
[0015] The column is made of 27SiMn as raw material, and is made through sub-temperature quenching and high-temperature tempering.
[0016] The sub-temperature quenching and high-temperature tempering process is as follows: the 27SiMn sample is heated to 830°C for quenching, and then heated to 560°C for tempering.
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