A Quenching Process Method Based on Roller Type Quenching Machine for Ultra-thin Plate and Strip Steel
A quenching machine and strip technology, which is applied in the field of quenching technology, can solve problems such as difficult correction, uneven distribution of residual stress, and high quenching sensitivity of strip steel, so as to improve flatness, facilitate rapid removal, and improve quenching uniformity and the effect of flatness
Active Publication Date: 2020-08-28
NORTHEASTERN UNIV LIAONING
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Problems solved by technology
[0006] In order to solve the problems of high quenching sensitivity of the strip steel in the prior art, easy warping and difficult correction after quenching, and uneven distribution of residual stress after quenching of the strip steel, which is easy to cause cold-working deformation and springback, the invention provides an ultra-thin plate The quenching process method of strip steel based on roller press quenching machine
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Embodiment 1
[0024] This embodiment provides the implementation process of a kind of ultra-thin strip steel of the present invention based on the quenching process of the roll type quenching machine. The present embodiment selects 4mm thick, 2m wide strip steel as an example, and the ultra-thin strip steel is based on The quenching process of the roller press quenching machine is described. like figure 1 As shown, before the strip steel 1 enters the quenching machine 2, the hydraulic servo system 3 is set to work in a roll gap constant position control mode using the hydraulic pressing control process, and the first frame 4 of the quenching machine 2 is set using the roll gap control process , The roll gap value of the second frame 5 is 3.9mm, the roll gap value of the third frame 6 is 20mm, the roll gap value is measured by the built-in displacement sensor 8 of the hydraulic cylinder 7 above each frame, and the roll speed control process is adopted Set the speed of the first group of rol...
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Abstract
The invention relates to the technical field of heat treatment technology, and in particular to a quenching process method for extremely thin plate and strip steel based on a roller quenching machine. This quenching process method includes a hydraulic reduction control process, a roll gap control process, a roll speed control process and a water ratio control process. The hydraulic reduction control process controls the roll gap and hydraulic reduction force through a hydraulic servo system to constrain the quenching of plate and strip steel. Deformation; the roll gap control process controls the binding force of the quenching deformation of the strip steel and the water flow state on the upper surface of the strip steel by adjusting the distance between the upper and lower rollers in the frame; the water ratio control process controls the roller pressing type on the upper and lower surfaces of the strip steel The water volume ratio of each nozzle of the quenching machine controls the deformation of the plate and strip steel after quenching. The invention improves the flatness of ultra-thin high-strength plate and strip steel after quenching, improves the quenching uniformity and flatness of the plate and strip steel, effectively eliminates the quenching deformation of the plate and strip steel, eliminates edge waves, middle waves and other quenching plate shape problems of the plate and strip steel, and improves After quenching, plate and strip steel has plate shape problems such as upward warping and buckling in the longitudinal direction.
Description
technical field [0001] The invention relates to the technical field of heat treatment process, in particular to a quenching process method of ultra-thin strip steel based on a roll-type quenching machine. Background technique [0002] 2~10mm ultra-thin strip steel is the main raw material in the fields of equipment manufacturing, transportation, petrochemical industry, etc. It is very important for the development of large-scale and light-weight equipment. The heating system and cooling system control the microstructure and shape of the strip steel, thereby obtaining more excellent performance. Roller quenching technology has the advantages of high cooling intensity, uniform quenching, high control precision, and continuous production, and has become the main quenching mode for ultra-thin and high-strength strip steel. [0003] As the thickness of the strip steel gradually becomes thinner, the traditional roller quenching technology has the following problems: the quenching...
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IPC IPC(8): C21D9/52C21D1/18C21D8/02C21D11/00
CPCC21D1/18C21D8/0242C21D8/0252C21D9/52C21D11/00
Inventor 付天亮王昭东韩毅刘光浩邓想涛田勇李勇李家栋
Owner NORTHEASTERN UNIV LIAONING