A kind of cold rolling production method of ultra-thin stainless steel strip

A production method and technology of stainless steel strips, applied in rolling, metal rolling, metal rolling, etc., can solve problems such as low production efficiency, low rolling speed, and small reduction in passes

Active Publication Date: 2021-06-18
山东能源装备集团乾元不锈钢制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing ultra-thin steel strip rolling technology is still immature, and often has the problems of low rolling speed and small pass reduction, which makes the cold rolling process cumbersome, long labor time, low production efficiency, and energy consumption. Large, low production capacity; at the same time, the obtained ultra-thin steel strip has low surface quality and low yield, which cannot meet the requirements of large-scale production and use
At the same time, as the thickness of the ultra-thin stainless steel strip decreases during the cold rolling process, problems such as unstable tension and poor thickness are prone to occur, resulting in strip breakage and strip draw, and cannot be smoothly rolled to the target thickness.

Method used

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  • A kind of cold rolling production method of ultra-thin stainless steel strip
  • A kind of cold rolling production method of ultra-thin stainless steel strip
  • A kind of cold rolling production method of ultra-thin stainless steel strip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A cold-rolling production method for an ultra-thin stainless steel strip, comprising the following steps:

[0028] The first step: blank preparation: select SUS430 raw material, BA blank of stainless steel strip with a thickness of 1.0mm and a width of 615mm.

[0029] The second step: the first rolling process: the billet is transported by the crane and the steel coil trolley to the uncoiler of the rolling mill, and enters the rolling mill after uncoiling. After the lead is wound to the coiler sleeve for two turns, the tension is established at 120KN, and 32% is given. Reduce the amount of reduction, then increase the speed of the uncoiler, rolling mill, and coiler to 100 m / min for steady-speed rolling. When the billet is almost rolled, perform slow-down rolling until parking, reverse after parking, and then reverse rolling , the reverse rolling speed is 120 m / min, so repeated reversible rolling, cold rolling 8 times, forming a semi-finished product with a thickness of ...

Embodiment 2

[0036] The same part of this embodiment and Embodiment 1 will not be described again, the difference is:

[0037] Select SUS304 raw material, 0.5mm thick, 610mm wide stainless steel strip 2B blank.

[0038] The first rolling process: establish a tension of 55KN and give a reduction of 30%. The uncoiler, rolling mill, and coiler are raised to 120 m / min for steady rolling. Reverse after parking, and then carry out reverse rolling, the reverse rolling speed is 140-180 m / min, so repeated reversible rolling, cold rolling 7 times, forming a semi-finished product with a thickness of 0.12mm.

[0039] Degreasing cleaning: The semi-finished product is transported by the crane to the uncoiler of the degreasing cleaning unit. After uncoiling, the head of the strip steel is welded by a lap welding machine, and then degreased, cleaned and dried by the S roller.

[0040] Continuous annealing: The semi-finished product enters the annealing furnace at a speed of 25 m / min. The temperature in t...

Embodiment 3

[0045] The same part of this embodiment and Embodiment 1 will not be described again, the difference is:

[0046] Select SUS301 raw material, 2B blank of stainless steel strip with a thickness of 1.5mm and a width of 610mm.

[0047] The first rolling process: establish a tension of 190KN, and give a reduction of 26%, the uncoiler, rolling mill, and coiler are raised to 80 m / min for steady rolling, and the reverse rolling speed is 100 m / min, so Repeated reversible rolling and cold rolling for 7 passes to form a stainless steel strip with a thickness of 0.5mm.

[0048] Degreasing and cleaning: The stainless steel strip with a thickness of 0.5mm is transported by a crane to the uncoiler of the degreasing and cleaning unit. area storage.

[0049] Continuous annealing: The stainless steel strip with a thickness of 0.5mm enters the annealing furnace at a speed of 9 m / min. The temperature in the annealing furnace is: 1100°C in the first zone, 1120°C in the second zone, 1140°C in th...

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Abstract

The invention discloses a cold rolling production method of an extremely thin stainless steel strip, comprising the following steps: blank preparation - first rolling process - degreasing cleaning - continuous annealing - repeating the first rolling process, degreasing cleaning and continuous annealing ‑Second rolling process, the present invention can properly buffer the fluctuation of tension and thickness by changing the pass processing rate of the second rolling process, reduce the risk of strip drawing and strip breakage, facilitate smooth rolling, and solve the problem of using AC variable frequency motor. The tension fluctuation problem caused by the multi-roll mill that establishes the tension is suitable for cold rolling of extremely thin steel strips with a finished thickness of less than 0.08mm.

Description

technical field [0001] The invention relates to the technical field of cold rolling of steel strips, in particular to a production method for cold rolling of ultra-thin stainless steel strips. Background technique [0002] With the development of the economy, the demand for high-precision ultra-thin steel strips has risen sharply, and its uses have continued to expand. It is widely used in various industries such as electronics industry, household appliances, automobile industry, machinery industry, and light industrial machinery. It is an important basis for the development of new technologies and is also the key raw material for high-tech, high-level and high-demand products in various traditional industrial sectors. [0003] Cold-rolled steel strips are made of hot-rolled steel coil billets after pickling, rolling, and annealing. Cold-rolled steel has good properties, and cold-rolled thin steel strips of a certain thickness can be obtained by cold-rolling. According to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/40B21B1/22B21B1/36B21B37/00B21B27/02C21D1/26C21D1/74C21D8/02C21D9/573
CPCB21B1/22B21B1/36B21B1/40B21B27/02B21B37/00B21B2001/221B21B2267/10C21D1/26C21D1/74C21D8/0236C21D9/573
Inventor 柏钦猛宿登峰孔凡伟杨学栋李保全李艳
Owner 山东能源装备集团乾元不锈钢制造有限公司
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