Thermoplastic plastic valve annealing process

A technology of thermoplastic and annealing process, which is applied in the field of plastic valve processing, can solve problems such as unsatisfactory annealing effect, achieve good promotion and application value, eliminate strain force, and have good annealing effect

Inactive Publication Date: 2017-05-31
埃维柯塑料科技(安徽)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional annealing process for plastic valves is to directly heat the plastic valve and then cool it down naturally to achieve annealing. The annealing effect is not very ideal, and the thermoplastic will shrink during the annealing process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] An annealing process for thermoplastic valves, the steps are as follows: put a polypropylene plastic valve with a wall thickness of 5 mm into a bottomed container made of high borosilicate heat-resistant glass, add mineral oil to it, so that the plastic valve is completely submerged in Put the container in the heating chamber of a microwave heating device in mineral oil, heat it to 135°C with microwaves for 2.5 minutes, take it out, and air-cool it to room temperature.

Embodiment 2

[0016] An annealing process for thermoplastic valves, the steps are as follows: put a polypropylene plastic valve with a wall thickness of 12 mm into a bottomed container made of stainless steel, add mineral oil to it, so that the plastic valve is completely submerged in the mineral oil, and put Put the container into the heating chamber of the microwave heating device, heat it with microwave to 140°C for 5 minutes, take it out, and air cool it to room temperature.

Embodiment 3

[0018] An annealing process for thermoplastic valves, the steps are as follows: put a polyethylene plastic valve with a wall thickness of 5mm into a bottomed container made of high borosilicate heat-resistant glass, add mineral oil to it, so that the plastic valve is completely immersed in Put the container in the heating chamber of a microwave heating device in mineral oil, heat it to 130°C with microwaves for 3 minutes, take it out, and air-cool it to room temperature.

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PUM

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Abstract

The invention provides a thermoplastic plastic valve annealing process and relates to the technical field of plastic valve processing. The thermoplastic plastic valve annealing process comprises the following steps that a plastic valve is put into a container with a bottom; mineral oil is added into the container to enable the plastic valve to be completely immersed into the mineral oil; and the container is put into a heating chamber of a microwave heating device, microwave-heated to 130-140 DEG C, taken out and air-cooled to a normal temperature. According to the thermoplastic plastic valve annealing process, strain force in a thermoplastic plastic can be quite well eliminated through the method, the annealing effect is good, accordingly, the physical and chemical performance of a thermoplastic valve is kept, and the thermoplastic plastic valve annealing process has quite good application and popularization value.

Description

technical field [0001] The invention relates to the technical field of plastic valve processing, in particular to an annealing process for a thermoplastic valve. Background technique [0002] Plastic valves have the advantages of light weight, corrosion resistance, no scale adsorption, integrated connection with plastic pipelines and long service life. Plastic valves are used in water supply (especially hot water and heating) and plastic pipeline systems for other fluids in industry. Among them, its advantages in application are unmatched by other valves. [0003] Plastic valve processing steps generally include ingredients, injection molding, annealing, machining and other steps. Among them, the purpose of annealing is to remove or eliminate the strain force in thermoplastics, so as to prevent cracks or fragmentation during later processing and application. At present, the conventional annealing process of plastic valves is to directly heat the plastic valves and then coo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C71/02
CPCB29C71/02B29C2071/022
Inventor 杨健
Owner 埃维柯塑料科技(安徽)有限公司
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