A kind of composite plate rolling method

A composite plate and composite billet technology, which is applied in metal rolling, metal rolling, manufacturing tools, etc., can solve problems such as warped buckles and buckles, and achieve the effects of low heating temperature, low energy consumption, and low heat preservation time

Active Publication Date: 2021-03-19
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adopting the method of asymmetrical cooling + rolling for asymmetrical heterogeneous composite billets, the problems of plate shapes such as buckle head and buckle produced during the rolling process of composite billets are solved

Method used

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  • A kind of composite plate rolling method
  • A kind of composite plate rolling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. The composite blank is TA1 / Q235B, the thickness of the composite layer TA1 is 6mm, the thickness of the base layer Q235B is 74mm, and the total thickness is 80mm.

[0029] 2. The composite billet TA1 / Q235B is heated in a heating furnace, the heating temperature is 880-900°C, and the heating and holding time is ≥1.3min / mm;

[0030] 3. The composite billet TA1 / Q235B is subjected to conventional rolling, and a total of 7 passes are rolled. When heating and rolling, the composite layer of the composite billet is on top. Before the first rolling pass, the composite billet enters the instant cooling device at a speed of 2m / s for cooling. Only the cooling water on the upper surface of the instant cooling device is turned on to cool the titanium layer. The carbon steel layer is not cooled and is cooled once. Then rolling the first pass and the second pass, the pass reduction is less than 25mm, and the pass reduction rate is less than 12%;

[0031] 4. Between the second pas...

Embodiment 2

[0034] 1. The composite blank is TA1 / Q345B, the thickness of the composite layer TA1 is 6mm, the thickness of the base layer Q345B is 74mm, and the total thickness is 80mm.

[0035] 2. The composite billet TA1 / Q345B is heated in a heating furnace, the heating temperature is 880-900°C, and the heating and holding time is ≥1.3min / mm;

[0036] 3. The composite billet TA1 / Q345B is subjected to conventional rolling, with a total of 9 passes. When heating and rolling, the composite layer of the composite billet is on top. Before the first rolling pass, the composite billet enters the instant cooling device at a speed of 4m / s for cooling, only the cooling water on the upper surface of the immediate cooling device is turned on to cool the titanium layer, and the carbon steel layer is not cooled, and a single cooling is performed. Then rolling the first pass and the second pass, the pass reduction is less than 25mm, and the pass reduction rate is less than 12%;

[0037] 4. Between the ...

Embodiment 3

[0042] 1. The composite blank is TA2 / Q345B, the thickness of the composite layer TA2 is 4mm, the thickness of the base layer Q345B is 60mm, and the total thickness is 64mm.

[0043] 2. The composite billet TA2 / Q345B is heated in a heating furnace, the heating temperature is 880-900°C, and the heating and holding time is ≥1.3min / mm;

[0044] 3. The composite billet TA2 / Q345B is conventionally rolled, with a total of 7 passes. When heating and rolling, the composite layer of the composite billet is on top. Before the first rolling pass, the composite billet enters the instant cooling device at a speed of 4m / s for cooling, only the cooling water on the upper surface of the immediate cooling device is turned on to cool the titanium layer, and the carbon steel layer is not cooled, and a single cooling is performed. Then rolling the first pass and the second pass, the pass reduction is less than 25mm, and the pass reduction rate is less than 12%;

[0045] 4. Between the second pas...

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Abstract

The invention relates to a composite board rolling method. The composite board rolling method comprises a composite blank heating and rolling process. The step of composite blank heating is as follows: a composite blank is heated in a heating furnace, wherein the heating and heat preservation time is greater than or equal to 1.3 min / mm; the rolling process comprises the following steps: performingthe rolling of the composite blank; before rolling or between passes, enabling the composite blank to enter an instant cooling device at the speed of 0.5 m / s-5m / s to be cooled, wherein the compositeblank is cooled in each pass or among a plurality of passes, a single-pass cooling or reciprocating cooling mode is adopted for one or more times during cooling, only the upper surface or the lower surface of the composite blank is subjected to single-side cooling in the cooling process, and then the composite blank is rolled into a finished product; during rolling, setting the pass reduction to be less than 25 mm, and setting the pass reduction rate to be less than 12%; and performing rolling to a finished product thickness. According to the method, the problems of head warping, buckling, buckling and the like in the composite blank rolling process can be effectively solved, the shape of the composite board is excellent, and the yield, the percent of pass and the production efficiency ofthe composite board are improved.

Description

technical field [0001] The invention relates to a rolling method of a composite plate, in particular to an asymmetric heterogeneous composite plate rolling method, which belongs to the field of rolling processing of metal materials. Background technique [0002] With the continuous development of science and industry, ordinary alloys or a single metal have been difficult to meet the requirements of industrial development for the comprehensive performance of materials, and composite panels have emerged as the times require. Composite boards made of two or more metal materials and made by different processes can meet special comprehensive performance requirements. At present, composite panels generally use high-strength and cheap carbon steel plates, container plates, low-alloy steels, etc. Composite materials with special properties, such as aluminum and aluminum, not only have excellent corrosion resistance, but also have the strength of ordinary steel plates as structural ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/38B21B3/00B21B45/02
CPCB21B1/38B21B3/00B21B45/0218
Inventor 镇凡邵春娟陆春洁曲锦波
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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