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New process for producing heating tube for washing machine

A heating tube and new process technology, which is applied in the field of new technology for preparing heating tubes for washing machines, can solve the problems of high density of filling insulating medium, large diameter reduction, time-consuming and laborious, etc. simple effect

Inactive Publication Date: 2014-09-24
ANHUI NINGGUO CITY TIANCHENG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a new process for preparing heating pipes for washing machines, so as to overcome the defects of the existing process, such as time-consuming and labor-intensive, large diameter reduction, high density of filling insulating medium inside, and complicated procedures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Tube loading: Put the resistance wire segment welded with the lead rod into the raw material copper tube with a diameter of Φ8.9mm*0.5mm, and temporarily seal one end of the copper tube with a rubber plug;

[0021] (2) Powder feeding: add magnesium oxide powder to the copper tube with resistance wire through the open end of the copper tube until the magnesium oxide powder fills the copper tube, and then temporarily seal the open end of the copper tube with a rubber plug ;

[0022] (3) Shrinking tube: compact the magnesium oxide powder in the copper tube by reducing the diameter of the copper tube. mm;

[0023] (4) Tube sealing: First remove the rubber plug at one end of the copper tube, dig out the magnesium oxide powder to a depth of 3mm, and clean it up to ensure that there is no magnesium oxide powder on the inner wall and threaded part of the steel tube, and seal the opening of the copper tube with sealing glue Then use the same method to seal the other end of...

Embodiment 2

[0026] (1) Tube loading: Put the resistance wire segment welded with the lead rod into the raw material copper tube with a diameter of Φ8.9mm*0.5mm, and temporarily seal one end of the copper tube with a rubber plug;

[0027] (2) Powder feeding: add magnesium oxide powder to the copper tube with resistance wire through the open end of the copper tube until the magnesium oxide powder fills the copper tube, and then temporarily seal the open end of the copper tube with a rubber plug ;

[0028] (3) Shrinking tube: The magnesium oxide powder in the copper tube is compacted by reducing the diameter of the copper tube. After shrinking the tube, the diameter of the steel tube is ф8mm, and then the steel tube is bent and formed according to the requirements, so that the radius of the steel tube is 24mm ;

[0029] (4) Tube sealing: first remove the rubber plug at one end of the copper tube, dig out the magnesium oxide powder to a depth of 4mm, and clean it up to ensure that there is n...

Embodiment 3

[0032] (1) Tube loading: Put the resistance wire segment welded with the lead rod into the raw material copper tube with a diameter of Φ8.9mm*0.5mm, and temporarily seal one end of the copper tube with a rubber plug;

[0033] (2) Powder feeding: add magnesium oxide powder to the copper tube with resistance wire through the open end of the copper tube until the magnesium oxide powder fills the copper tube, and then temporarily seal the open end of the copper tube with a rubber plug ;

[0034] (3) Shrinking tube: The magnesium oxide powder in the copper tube is compacted by reducing the diameter of the copper tube. After shrinking the tube, the diameter of the steel tube is ф8mm, and then the steel tube is bent and formed according to the requirements, so that the radius of the steel tube is 15mm. ;

[0035] (4) Tube sealing: First remove the rubber plug at one end of the copper tube, dig out the magnesium oxide powder to a depth of 3mm, and clean it up to ensure that there is ...

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Abstract

The invention relates to the technical field of washing machine heating tube production, and discloses a new process for producing a heating tube for a washing machine. The new process comprises the following steps: (1) filling a tube, (2) filling powder, (3) contracting the tube, (4) sealing the tube, and (5) performing oil pressurizing. The new process for producing the heating tube for the washing machine is simple, few in production procedures, low in cost, and less in sizing reduction, the density of insulating medium magnesium oxide filled inside is moderate, obvious wrinkle and crack phenomena in direct formation can be avoided, the processing quality of the product is ensured, the consistency of the product appearance is better, and the reliability of the product quality is greatly improved.

Description

technical field [0001] The invention relates to the technical field of washing machine heating tube production, in particular to a new process for preparing a washing machine heating tube. Background technique [0002] The electric heating tube for washing machine is a key part of the washing machine, used to heat cold water. It is characterized by a large surface load and small volume, which can quickly heat the water medium. Therefore, the heating tube of the washing machine must be safe. The existing washing machine heating tube preparation process mainly includes the following steps: tube loading, powder feeding, tube shrinkage, partial annealing, polishing, tube sealing and oil pressure. The diameter of the raw material is ф9.5*0.5. After the tube shrinking process, the tube diameter is compressed to ф8mm; the amount of diameter reduction is too large, and the density of the inner filling insulating medium magnesium oxide is relatively high; in order to avoid wrinkles a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00D06F37/00
CPCB23P15/00B23P2700/09D06F39/04
Inventor 胡春国胡伟
Owner ANHUI NINGGUO CITY TIANCHENG TECH DEV
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