Steel Rail Accessories Welded wire

GB standard Welded and False Welding of Welded Welds The weld surface is not adequately plated with tin and is not tin-resistant. This is due to the fact that the surface of the weldment is not clean or the flux is used too little and the welding time Too short caused by.

In the workshop production, the installed machine is not faulty, but to the user after a period of time, due to poor welding, poor electrical conductivity caused by the failure occurred, is caused by early high repair rate of one of the reasons Is the "Weld".

Lead to GB standard rail Weld causes: solder paste thixotropic performance is poor or solder paste viscosity after recovery is too slow. Heating speed too fast. Powder particle size too wide. Metal load or solid content is too low, the flux surface tension is too small. GB standard rail welding is a very important thing, its quality should be guaranteed, so GB GB rail welding should have a certain technical requirements. We take a look at the long GB standard rail welding technical requirements which?

1. To be welded GB standard rails should be consistent with the new line rail GB standard rail-related technical conditions.

2. Base GB GB rail welding should be used to contact welding.

3. Welding equipment operators must undergo professional training, familiar with GB standard rail welding head quality standards, the relevant departments of qualified, and access to operational certification.

4. The operator must strictly enforce the operating procedures of the welding equipment and verify the operating parameters as specified.

5. Long GB standard rail welding the basic process: the optional track of a rail head straight to the end of a welding a welding a normalizing a weld rough grinding a weld cooling a GB standard rail four straightening a seam fine grinding A flaw detection, acceptance of a storage.

6. Long GB standard rail welding should be prepared according to the design requirements of the track plan.

7. Track should be used when the cross-section asymmetry, the basic tolerance of the GB standard rail relative welding. Long GB standard rails at the end of the asymmetric deviation of not more than 0.6mm.

8. According to the requirements of rails and straightening the situation on the GB standard rail sawing. GB standard rail hardened straightened, with 1m ruler measured its vector should not be greater than 0.2mm.

9. Clear the dirt within the range of 0.5m, to be welded rail end and GB standard rail and electrode contact parts should be grinding rust, so that metallic luster exposed to more than 80%.

10. When the ambient temperature is below 10 ?, the heating temperature of the two rail ends of the welding rail should meet the requirements of rail welding of the new railway GB standard.