Summary of the invention
In order to solve the problem of hardening break, the invention provides a kind of quenching method of 45# steel workpiece.
The invention provides a kind of quenching method of 45# steel workpiece, step is as follows: workpiece is placed in heating installation, is heated to 880-890 ℃, insulation 1-2 hour; With the quenching medium of 70-80 ℃, quenched, 500-510 ℃ of tempering; Wherein, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5-6%, and sodium-chlor 1-2%, all the other are water.
Preferably, workpiece is placed in heating installation, is heated to 885 ℃, be incubated 1.5 hours.
Preferably, with the quenching medium of 75 ℃, quenched, 505 ℃ of tempering.
Preferably, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5.5%, and sodium-chlor 1.5%, all the other are water.
Second purpose of the present invention is to provide a kind of quenching medium, and described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5-6%, and sodium-chlor 1-2%, all the other are water.
Preferably, described quenching medium is comprised of each material of following quality percentage composition: Repone K: 5.5%, and sodium-chlor 1.5%, all the other are water.
The 3rd purpose of the present invention is to provide the application of above-mentioned quenching medium in the 45# steel workpiece quenches.
Apply the situation that 45# steel that method of the present invention obtains not there will be hardening break.
Embodiment
Following embodiment is convenient to understand better the present invention, but does not limit the present invention.
embodiment 1
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 885 ℃, be incubated 1.5 hours; With the quenching medium of 75 ℃, quenched, 505 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5.5kg, sodium-chlor 1.5kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 2
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 880 ℃, be incubated 1 hour; With the quenching medium of 73 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5.5kg, sodium-chlor 1.5kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 3
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 890 ℃, be incubated 2 hours; With the quenching medium of 70 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 6kg, sodium-chlor 2kg, water 92kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 4
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 888 ℃, be incubated 1 hour; With the quenching medium of 78 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5kg, sodium-chlor 2kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 5
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 883 ℃, be incubated 1.5 hours; With the quenching medium of 80 ℃, quenched, 500 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5kg, sodium-chlor 2kg, water 93kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 6
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 880 ℃, be incubated 1 hour; With the quenching medium of 76 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 5kg, sodium-chlor 1.5kg, water 93.5kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
embodiment 7
The quenching method step of a kind of 45# steel workpiece of the present invention is as follows: workpiece is placed in heating installation, is heated to 890 ℃, be incubated 2 hours; With the quenching medium of 74 ℃, quenched, 510 ℃ of tempering.
Wherein, the formula of quenching medium is: Repone K: 6kg, sodium-chlor 1.5kg, water 92.5kg.
The preparation method of quenching medium is: the Repone K of formula ratio, sodium-chlor are added in the water of formula ratio, stir.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment, the present invention is had been described in detail, for a person skilled in the art, its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.