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High alloy wear-resistant double-layer composite straight pipe used for concrete pump truck

A concrete pump truck, double-layer composite technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of increasing costs and high import prices, reducing the number of replacements, improving service life and production efficiency. Effect

Inactive Publication Date: 2015-10-28
ZIBO TENGKUN IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

3. Import foreign composite straight pipe, the outer pipe is ordinary seamless steel pipe, the inner sleeve is high manganese steel or high-speed steel inner pipe, this method has high wear resistance, and the service life is about 40,000 to 45,000 cubic meters. The replacement of product design is fast, but because there is no domestic manufacturer, the import price is relatively high, which increases the cost

Method used

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  • High alloy wear-resistant double-layer composite straight pipe used for concrete pump truck

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Embodiment

[0018] Such as figure 1 As shown, a high-alloy wear-resistant double-layer composite straight pipe for a concrete pump truck includes an outer pipe 1, an inner pipe 2 and a shock-absorbing material 3, the inner pipe 2 is pushed into the outer pipe 1, and the outer pipe A shock-absorbing material 3 is arranged between 1 and the inner tube 2, and the material used for the shock-absorbing material is one or more of EVA, PE, CR, PU foam, and PORON.

[0019] The outer tube 1 and the inner tube 2 are provided with a flange 4 on the edge, and the size of the outer tube is completely matched without any gap after being inserted into the flange.

[0020] The outer tube 1 is made of No. 45 or No. 20 steel, and there is no welding between the outer tube 1 and the inner tube 2, which can be reused.

[0021] The outer tube 2 is cast from a high chromium alloy with other alloying elements, mainly composed of 18% ferrochrome, 4.5% nickel, 6.5% molybdenum, and 2.0-2.5% carbon and other rare ...

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Abstract

The invention discloses a high alloy wear-resistant double-layer composite straight pipe used for a concrete pump truck. The high alloy wear-resistant double-layer composite straight pipe comprises an outer pipe, an inner pipe and a shock absorption material. The inner pipe is pushed into the outer pipe. The shock absorption material is arranged between the outer pipe and the inner pipe and is made of one or more of EVA, PE, CR, PU foam and PORON. The high alloy wear-resistant double-layer composite straight pipe has the beneficial effects of being high in strength, resistant to impact, high in abrasion resistance and the like; the abrasion cycle is prolonged by 5 times to 6 times compared with those of other similar products, so that the effects of greatly reducing the operation cost, materials and the number of replacement times are achieved, the service life is prolonged, the production efficiency is improved, and the effects of energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to a high-alloy wear-resistant double-layer composite straight pipe for a concrete pump truck. Background technique [0002] At present, there are mainly the following types of straight pipes for concrete pump trucks (trailers and ground pumps) in China: 1. General materials and single materials, such as straight pipes produced by ordinary welded pipes, can be completed by simple welding. Although it has a little strength and toughness, but because of its poor wear resistance, the service life is about 5000-8000 cubic meters, and the replacement times are many, which affects the work efficiency and increases the process cost, and has been basically eliminated. 2. The seamless steel pipe or No. 45 welded pipe has been quenched and heat-treated on the inner wall to increase its wear resistance. Now the quenched pipe can increase the amount of concrete conveyed to about 20,000 to 25,000 cubic meters, and has been widely used in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147
CPCF16L9/147
Inventor 何伟
Owner ZIBO TENGKUN IND & TRADE CO LTD
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