Cold roller production process

A production process and technology of cold rolling rolls, applied in the field of cold rolling rolls, can solve the problems of poor quality of aluminum plates, poor hardness uniformity, short service cycle, etc., and achieve the effects of uniform thickness, flat shape and high surface finish.

Active Publication Date: 2009-08-26
CHANGZHOU ECCO ROLLER
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problems of poor uniformity of hardness of the work roll body of the existing cold rolling mill, small effective hardening depth, poor quality of the rolled aluminum plate, and short service life, a cold rolling mill is provided. Roll production technology, it can roll the widest domestic aluminum plate roll with high hardness, high smoothness and long service life, which can replace imported high-precision aluminum plate and strip for domestic construction, home appliance manufacturing, packaging and other civil and military fields such as aerospace and aviation , to provide high-quality domestic products

Method used

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Embodiment Construction

[0015] to produce Taking the work roll of the widest domestic cold rolling mill as an example, the process of producing cold rolling rolls is explained in detail.

[0016] The high chromium alloy material used can be 9Cr3MoV or 9Cr4MoV or 9Cr5MoV, and these materials can meet the performance requirements of cold rolling roll manufacturing.

[0017] The specific process steps of the cold rolling roll are as follows: a. The blank made of 9Cr3MoV high-chromium alloy material is forged and annealed, and then the blank is inspected, and then transferred to gold processing after passing the test; b. Milling the two ends of the blank; c. Marking the center of both ends Hole line, drill center hole A20 at both ends; d. Top center hole, rough turning processing, at this time, the diameter of the roll body reaches Φ512 0 -1 ,See figure 1 ; e. Make a hoisting hole Φ60mm at the left end, and mark the roll number at the end of the hoisting hole, and then conduct ultrasonic flaw detecti...

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Abstract

The invention relates to the cold roller technical field, in particular to a cold roller production process which is characterized in that: blank which is made of high chrome alloy material in forging way is annealed and then is polished into a finished product by steps of rough turning processing, thermal refining, semi-finish turning processing, falling duplex frequency treatment, finish turning processing, etc. The high chrome alloy material and specific falling duplex frequency treatment quenching technology are adopted for manufacturing cold rollers. The effective hardening depth of the manufactured cold rollers reaches to unilateral 20mm above, the hardness uniformity of the roller body is not larger than two Shore units, and the hardness value is larger than Shore 98 degrees. The cold rollers can be used for rolling pure aluminum and billet aluminum with the rolling amplitude of 2200mm and the thickness of under 0.5mm. The rolled aluminum plate has the characteristics of high surface finish degree, uniform thickness and smooth plate profile.

Description

technical field [0001] The invention relates to the technical field of cold rolls, in particular to a production process of cold rolls. Background technique [0002] With the rapid development of my country's national economy, the domestic demand for high-precision aluminum strips continues to increase, and it is not yet fully self-sufficient. High-precision aluminum strips and foils are the main varieties imported by my country, accounting for about 85% of the total aluminum imports. about. Most of the work rolls of the existing high-precision aluminum plate cold rolling mills in my country are made of commonly used alloy steel or high-speed steel through heat treatment processes such as quenching and tempering. The hardness uniformity of the produced roll body is not enough, the hardness value is generally 95HS, and the effective hardening depth after heat treatment is about 10-15mm, so the surface finish of the rolled aluminum plate is not high, the thickness is not unifo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C21D9/38B21B27/00B21B27/02
Inventor 李仪
Owner CHANGZHOU ECCO ROLLER
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