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C-shaped steel coil hook protective layer and method for forming the protective layer

A protective layer, C-shaped steel technology, applied in the field of forming the protective layer, C-shaped steel coil hook protective layer, can solve the problems of having to repackage, the anti-collision effect is not obvious, and the steel coil is scrapped, etc., to improve production quality and Good output and anti-collision effects, and the effect of reducing enterprise costs

Active Publication Date: 2016-01-13
太原市聚尼耐磨材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) When the C-type hook lifts and lifts the steel coil, it collides with the head and the front of the steel coil, causing defects in the collision part, which affects downstream production or customer use, and the entire steel coil is scrapped if it is serious;
[0004] 2) When the C-type hook lifts the steel coil, the inner layer of the steel coil is crushed and scratched, causing the hook body to press the steel coil and cause the C-type hook to tilt. In the next production process, the crushed part will be cut off and returned to the furnace as a waste product. production, serious ones shall be sentenced to abolition;
[0005] 3) When using the C-shaped hook to lift the finished steel coil, when there is no collision or crush, sometimes the inner wall of the finished steel coil is deformed due to the fast lifting speed of the crane, and the deformed part affects the use; or the finished steel coil The packaging was damaged and had to be repacked
[0006] The current protective measures are as follows: wrap felt and iron straps on the surface of the hook to avoid collision between the steel coil and the hook. Increased cost

Method used

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  • C-shaped steel coil hook protective layer and method for forming the protective layer

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Embodiment 1

[0040] Embodiment 1: C-shaped steel coil hook protective layer and its implementation method

[0041] Such as figure 1 As shown, a C-shaped steel coil hook protective layer is characterized in that: the outer surface of the C-shaped steel coil hook 1 is integrally cast and bonded together with a layer of polyurethane protective layer 2, and the thickness of the protective layer 2 is 12mm-45mm. In this embodiment, the protective layer is an annular sleeve located on the surface of the C-shaped hook, the thickness of the top of the annular sleeve is 45mm, the thickness of the outer surface is 12mm, and the thickness of the inner surface is 22mm.

[0042] The implementation method of the polyurethane protective layer provided by the present embodiment is: comprise the following steps:

[0043] (1) Clean the surface of the original C-type hook to remove rust and paint;

[0044] (2) Survey and map the shape of the original C-type hook, and carry out mold processing after drawing;...

Embodiment 2

[0049] Embodiment 2: the preparation method of polyurethane protective layer:

[0050] In this embodiment, a polyurethane protective layer with a hardness of 90 to 95 degrees is prepared for a steel coil with a thickness of 10 mm to 20 mm. Specific steps are as follows:

[0051] (1) Add 7.6 kg of polyester polyol into the reaction kettle, heat it to 140 degrees, and carry out vacuum, dehydration and pumping for 3 hours;

[0052] The molecular weight of polyester polyol is 1450--1500, provided by Shandong Dongdayi Nuowei Polyurethane Co., Ltd.

[0053] (2) Then use cold water to cool down to below 60 degrees, and add 2.4 kg of toluene diisocyanate T-100 to the reaction kettle; the heat generated by the reaction ensures that the temperature is below 78--80 degrees, and the reaction is continued for 3 hours to prepare 10 kg of polyurethane pre- polymer, and then the prepolymer flows from the reactor into the container;

[0054] (3) Add 0.345 kg of diaminodiphenylmethane that h...

Embodiment 3

[0057] Embodiment 3: the preparation method of polyurethane protective layer:

[0058] In this embodiment, a polyurethane protective layer with a hardness of 75 degrees to 80 degrees is prepared for a steel coil thickness of 0.5 mm to 10 mm. The specific steps are as follows:

[0059] (1) Add 7.8 kg of polyester polyol into the reaction kettle, heat it to 140 degrees, and carry out vacuum, dehydration and pumping for 3 hours;

[0060] The molecular weight of polyester polyol is 1980--2050, provided by Shandong Dongdayi Nuowei Polyurethane Co., Ltd.

[0061](2) Then use cold water to cool down to below 60 degrees, and add 2.2 kg of toluene diisocyanate T-100 to the reaction kettle; the heat generated by the reaction ensures that the temperature is below 78--80 degrees, and the reaction is continued for 4 hours to prepare 10 kg of polyurethane pre- polymer, and then the prepolymer flows from the reactor into the container;

[0062] (3) Add 0.36 kg of heated and melted 3,3'-dic...

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Abstract

The invention discloses a C type coil grab protection layer. The C type coil grab protection layer is characterized in that a layer of polyurethane protection layer is cast on the outer surface of a C type coil grab, and the thickness of the protection layer is 12-45mm. The invention also discloses a method for forming the protection layer. The original C type coil grab is not subjected to any physical damage such as any processing, heating and perforating, and the polyurethane protection layer is wholly cast and can be prepared according to different hardness requirements which are proposed by clients.

Description

technical field [0001] The invention relates to a protective device for a C-shaped hook, in particular to a protective layer for a C-shaped steel coil hook, and also relates to a method for forming the protective layer. Background technique [0002] At present, the main large-scale lifting tool most commonly used by my country's iron and steel enterprises in the steel coil production process is the C-type hook, which is used in every link in the steel coil production process, such as rough rolling, finishing rolling, pickling, polishing, transfer, and shipment. The C-shaped hook is made of steel, which is directly welded or integrally cast from steel plates. It does not have any anti-collision facilities on the outside, and is prone to strong collisions with the steel coils being transported, which can easily cause the following serious problems on the steel coils: damage: [0003] 1) When the C-type hook lifts and lifts the steel coil, it collides with the head and the fro...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/42C08G18/32B29C39/10
CPCC08G18/10C08G18/6651C08G18/3814C08G18/3243
Inventor 李浩张新宇
Owner 太原市聚尼耐磨材料有限公司