Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm

A technology of enameled wire and traction wheel, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, instruments, etc., to achieve the effect of improving utilization rate and utilization rate

Inactive Publication Date: 2011-09-07
SUZHOU XINDI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] How to solve this problem has become a technical problem in the art, and there is no method and equipment that can be used to solve this problem in the prior art

Method used

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  • Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm
  • Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm
  • Method for determining gradient of traction wheel of enameled wire mold with diameter less than 0.2 mm

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Embodiment Construction

[0030] Such as figure 1 , 2 , 3, and 4, firstly calculate the elastic modulus of the enameled wire in the enamelling machine furnace according to the high temperature test results, and the sample wire used in the high temperature test is 0.47mm and 0.14mm self-adhesive wire. The enameled wire during the baking and painting process is always pulled by the traction wheel to produce strain (stretch). For the elastic body, the relationship between stress and strain is shown in the following formula:

[0031] σ = Eε

[0032] where σ: stress, E: modulus of elasticity, ε: strain

[0033] Test the elastic modulus of self-adhesive enameled wire with a conductor diameter greater than 0.2mm. Firstly, the high-temperature tensile test is carried out on a relatively thick 0.47mm self-adhesive wire to obtain the corresponding basic data:

[0034] After testing, after complete annealing, the elastic modulus E1 of enameled copper wire coated with paint film at a temperature of 20°C is 81...

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Abstract

The invention provides a method for determining gradient of traction wheels of an enameled wire mold with a diameter less than 0.2 mm. The method comprises the steps of: after pulling and annealing at a high temperature, measuring elastic modulus E1, copper volume rate V1, paint film volume rate V2 and elastic modulus E of copper in the enameled wire with a conductor diameter greater than 0.2mm at normal temperature; according to the elastic modulus E1 and the elastic modulus E, substituting into a formula, namely E=EIV1+ E2V2, for calculating the elastic modulus E2 at normal temperature; measuring the elastic modulus E at 200 DEG C, 400 DEG C, 500 DEG C and 600 DEG C respectively and calculating the elastic modulus E1200, E1400, E1500 and E1600; measuring the copper volume rate V1, the paint film volume rate V2 of the enameled wire with the conductor diameter less than 0.2 mm and substituting into the formula, namely E=EIV1+ E2V2; and calculating the elastic modulus E of the enameled wire with the conductor diameter less than 0.2 mm, substituting the elastic modulus E into the formula, namely sigma=epsilon, to acquire the strain value epsilon of the enameled wire with the diameter less than 0.2 mm, and the epsilon is the gradient of the traction wheel.

Description

[0001] technical field [0002] The invention relates to the transformation of equipment for painting enameled wire molds with a conductor diameter below φ0.2mm, in particular to equipment obtained by determining the inclination of the enameled wire mold traction wheel with a diameter less than 0.2mm. Background technique [0003] Felt paint is generally used when painting round wires with a conductor diameter less than 0.2mm in China. We know that when using felt paint to manufacture enameled wires, there are problems such as unsatisfactory roundness and uneven paint film caused by temperature differences between day and night. Products with high precision requirements will be difficult to apply. For this reason, mold coating must be used; and the biggest problem of mold coating for wires with a conductor diameter less than 0.2mm is wire breakage. How to reduce the wire breakage problem during the wire drawing process, is currently to be resolved. There are many factors th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/16G01B21/22H01B13/16
Inventor 顾坤楠
Owner SUZHOU XINDI ELECTRICAL
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