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Roughing mill pass system for hot rolling track shoes and hot rolling method for track shoes

A rough rolling mill and crawler shoe technology, applied in metal rolling and other directions, can solve the problems of complex shape of crawler shoe, low degree of automation, uneven deformation, etc., and achieve the effect of eliminating limitations and unfavorable conditions, promoting widening and increasing stability.

Inactive Publication Date: 2017-08-25
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex shape of track shoes (see figure 1 ), due to the high and narrow billet and uneven deformation in the rough rolling process, the steel is flipped and inverted. Therefore, the three-roll mill with a low degree of automation and fixed rolling procedures is not suitable for the production of this type of steel

Method used

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  • Roughing mill pass system for hot rolling track shoes and hot rolling method for track shoes
  • Roughing mill pass system for hot rolling track shoes and hot rolling method for track shoes
  • Roughing mill pass system for hot rolling track shoes and hot rolling method for track shoes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A hot-rolling process for track shoes. The rough rolling adopts a three-roll rolling mill, and the ratio of the height to the width of the billet is 1; each rough rolling hole is provided with three legs; above the pass, there is a false leg corresponding to the middle leg; The rolling passes are composed of leg height increasing holes and wing plate widening holes.

[0038] The two side legs (the first side leg 1 and the second side leg 3) of each rough rolling hole are equal in height, and the middle leg 2 is 60% of the height of the side legs.

[0039] The artificial leg 4 is located directly above the middle leg 2, has a width similar to that of the middle leg, and a height of 10mm.

[0040] The shape of the leg height increasing hole is roughly E-shape with the opening downward, the top sides of the leg height increasing hole are inclined outwards, the angle a with the vertical direction is 5°, and the opening of the hole is downward.

[0041] The wing plate 5 of ...

Embodiment 2

[0046] A hot-rolling process for track shoes. The rough rolling adopts a three-roll rolling mill, and the ratio of the height to the width of the billet is 0.8; each rough rolling hole is provided with three legs; above the pass, there is a false leg corresponding to the middle leg; The rolling passes are composed of leg height increasing holes and wing plate widening holes.

[0047] The two side legs (the first side leg 1 and the second side leg 3) of each rough rolling hole are equal in height, and the middle leg 2 is 90% of the height of the side legs.

[0048] The artificial leg 4 is located directly above the middle leg 2, has a width similar to that of the middle leg, and a height of 20 mm.

[0049] The shape of the leg height increasing hole is roughly E-shape with the opening downward, the top sides of the leg height increasing hole are inclined outwards, the angle a with the vertical direction is 20°, and the opening of the hole is downward.

[0050] The wing plate 5 o...

Embodiment 3

[0055] A hot-rolling process for track shoes. The rough rolling adopts a three-roll rolling mill, and the ratio of the height to the width of the billet is 0.6; each rough rolling hole is provided with three legs; above the pass, there is a false leg corresponding to the middle leg; The rolling passes are composed of leg height increasing holes and wing plate widening holes.

[0056] The two side legs (the first side leg 1 and the second side leg 3) of each rough rolling hole are equal in height, and the middle leg 2 is 70% of the height of the side legs.

[0057] The artificial leg 4 is located directly above the middle leg 2, has a width similar to that of the middle leg, and a height of 30 mm.

[0058] The shape of the leg height increasing hole is roughly E-shape with the opening downward, the top sides of the leg height increasing hole are inclined outwards, the angle a with the vertical direction is 10°, and the opening of the hole is downward.

[0059] The wing plate 5...

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Abstract

The invention belongs to the technical field of structural steel production and particularly relates to a roughing mill hole pattern system used for hot rolling of a track shoe and a hot rolling method of the track shoe. The roughing mill hole pattern system used for hot rolling of the track shoe and the hot rolling method of the track shoe are provided, specifically, a three-roll mill is used for rough rolling, and a continuous casting steel billet is adopted as the billet, wherein the ratio of the height to the width of the continuous casting steel billet is smaller than or equal to 1. Each rough rolled hole is provided with three legs, wherein a false leg corresponding to the middle leg is arranged above a hole pattern, and the rough rolled hole pattern is composed of leg height increasing holes and wing plate widening holes. According to the roughing mill hole pattern system used for hot rolling of the track shoe and the hot rolling method of the track shoe, the defects in the prior art are overcome, the roughing mill hole pattern system does not need to be upgraded or transformed based on an existing three-roll roughing mill, and hot rolling production of the track shoe can be achieved.

Description

technical field [0001] The invention belongs to the technical field of section steel production. Specifically, the invention relates to a roughing mill pass system for hot-rolling track shoes and a hot-rolling method for track shoes. Background technique [0002] Crawler is a commonly used walking part of construction machinery. Compared with tires, crawler can be used in various harsh working environments, and has the advantages of wear resistance and impact resistance. Track shoes are metallurgical products necessary for the production of tracks. There are various forming methods, such as casting forming, stamping forming, machining forming and rolling forming. Due to the high efficiency of the rolling forming method, it will become an inevitable trend to adopt the hot rolling method to produce track shoes. The hot rolling of section steel is divided into two stages, rough rolling and finishing rolling. The purpose of rough rolling is to roll out the cross-sectional shap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/08
CPCB21B1/08B21B2201/06B21B2265/22
Inventor 霍喜伟王中学孙晓庆纪进立刘春伟宋玉卿
Owner SHANDONG IRON & STEEL CO LTD
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