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U-PVC (Unplasticized Polyvinyl Chloride) steel band spiral pipe and preparation method thereof

A technology for winding pipes and steel strips, applied in the direction of pipes, rigid pipes, mechanical equipment, etc., can solve the problems of high cost and large material consumption, and achieve the effect of low cost, high displacement resistance and cost reduction.

Active Publication Date: 2011-09-28
广东互顺通塑胶工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the performance of the PVC winding pipe can be greatly improved through the above process, in order to meet a certain ring stiffness requirement, the pipe must have a certain thickness, so the material consumption is large and the cost is high

Method used

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  • U-PVC (Unplasticized Polyvinyl Chloride) steel band spiral pipe and preparation method thereof
  • U-PVC (Unplasticized Polyvinyl Chloride) steel band spiral pipe and preparation method thereof
  • U-PVC (Unplasticized Polyvinyl Chloride) steel band spiral pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, the U-PVC material is extruded through the extruder to extrude the cross section as Figure 4 , 5 The U-PVC strip 6 shown includes a base plate 61 and an upper cover 62. Then the U-PVC strip 6 is heated by a tunnel heater for about 2 minutes, so that the temperature of the U-PVC strip 6 reaches 85°C. The temperature is maintained, and the steel belt 7 is fed into a winding forming machine for winding to form a U-PVC pipe.

Embodiment 2

[0029] First, the U-PVC material is extruded through the extruder to extrude the cross section as Figure 4 , 5 The U-PVC strip 6 shown, including a base plate 61 and an upper cover 62, is fed into a winding forming machine together with the steel strip 7 to be wound to form a U-PVC pipe, and then the shaped U-PVC winding pipe 1 is passed through a tunnel type The heater heats for about 2 minutes to bring the pipe temperature to 75°C.

Embodiment 3

[0031] First, the cross section of the PVC material is extruded through the extruder as Figure 4 , 5 The U-PVC strip 6 shown includes a base plate 61 and an upper cover 62. Then the U-PVC strip 6 is heated by a tunnel heater for about 1 minute, so that the temperature of the U-PVC strip 6 reaches 55°C. The temperature is maintained, and the steel belt 7 is fed into the winding forming machine for winding to form a U-PVC pipe, and then the pipe is heated by the tunnel heater 4 for about 3 minutes, so that the pipe temperature reaches 100°C.

[0032] The U-PVC material in the present invention has lower cost and higher hardness than the currently commonly used PE material. Under the condition of achieving the same performance, the PVC winding pipe with steel belt can save 30%-60% of PVC material and reduce the cost by 20%-50% compared with the existing pure PVC winding pipe, which is of great significance for practical applications.

[0033] Take pipe ring stiffness S2 (8KN / m 2 ) Gr...

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Abstract

The invention discloses a U-PVC (Unplasticized Polyvinyl Chloride) steel band spiral pipe and a preparation method thereof. The U-PVC steel band spiral pipe is formed by winding a U-PVC strip and a steel band together. On the basis of the U-PVC spiral pipe, the various advantages of high elastic modulus of steel and extremely low price compared with a plastic material are utilized, and a steel frame is perfectly compounded in the U-PVC spiral pipe, so that rigidity of the pipeline is improved, the cost of the pipeline is greatly reduced, and a new-generation large-aperture plastic steel composite pipe is formed on the basis of original performance of the U-PVC steel band spiral pipe; and compared with the same type of pipeline, the steel band spiral pipe has superior price advantage, and engineering cost of various types of municipal drainage works can be reduced well.

Description

Technical field [0001] The invention relates to the field of pipe materials, in particular to a U-PVC steel belt wound pipe and a preparation method thereof. Background technique [0002] PVC winding pipe is suitable for large-scale municipal drainage (sewage) projects and large-scale water conservancy projects. Its production pipe diameter is between Φ300MM-Φ2500MM. PVC winding pipe has acid and alkali corrosion resistance, high ring stiffness, low water resistance coefficient, long service life, strong earthquake resistance, high displacement resistance, and fast construction speed. [0003] PVC material has good physical and chemical properties. Since the early 1980s, the country has vigorously promoted the application of PVC pipes, formulated a series of policies, systems, and standards, and accumulated a lot of experience. Today, there are complete product standards, testing method standards and testing methods, construction engineering technical specifications, etc., which...

Claims

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Application Information

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IPC IPC(8): F16L9/16B21C37/12B29C53/58
Inventor 甘志超
Owner 广东互顺通塑胶工程技术有限公司