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Method for repairing circular saw web of flying sawing machine

A repair method and technology for circular saw blades, which are applied to tool dressing of sawing machines, metal sawing equipment, metal processing equipment, etc., can solve the problems of shortening the life of the saw blade, increasing the production cost, and eliminating the phenomenon of annealing of the saw blade. Achieve the effect of reducing saw blade expenses and production costs

Inactive Publication Date: 2012-06-20
SHANXI DINGRONG COLD FORMED SECTIONS
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AI Technical Summary

Problems solved by technology

However, the simple mechanical repair of the gear grinding machine does not eliminate the annealing phenomenon generated by the saw blade in the continuous sawing process, but reduces the service life of the saw blade. scrapped after
Simultaneously, this method can't repair the saw blade with bigger damage, it can only be treated as scrap, which greatly increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The repair process of the damaged circular saw after cutting the cold-formed steel with the highest strength of 550 Mpa is as follows:

[0022] 1. Place the saw blade on the platform to correct and reshape. For saw blades that are not seriously deformed and twisted, calibrate them regularly week by week. Do not calibrate in blocks. The force of beating should be even and rhythmic; It needs to be corrected with a leveler. For broken teeth, carbon dioxide gas shielded welding and low current (180A ~ 200A) welding are used for repair welding.

[0023] 2. Use the MJD-H A4 type gear grinding machine to mechanically trim the saw teeth, the tooth pitch is 20mm, the tooth height is 10mm, and the power is 1.1KW.

[0024] 3. Use the self-designed high-frequency quenching device for sawtooth heat treatment, the current intensity is 580 A ~ 1060 A, and the quenching time is 20 ~ 45 minutes.

[0025] 4. After quenching, the saw blade is tempered at 180°C-200°C for 30-60 minutes at...

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Abstract

The invention relates to a method for repairing a circular saw web of a flying sawing machine. The method sequentially comprises the following technical processes of shaping the saw web, repairing broken teeth, shaping the tooth shape of a tooth grinding machine, quenching at high frequency and tempering at low temperature, so that the shortcoming of pure mechanical repairing of the tooth grinding machine is overcome; and saw teeth of the saw web have the original performance, and the service life of the saw web is not shortened; theoretically, the saw web can be repaired for over hundred times; the cutting area is reduced by about 0.1 to 0.5 percent every time when the saw web is repaired; therefore, the cost of the saw web during production of cold-formed sectional steel is reduced greatly; and the production cost is reduced.

Description

technical field [0001] The invention relates to a method for repairing a circular saw blade of a flying saw machine. Background technique [0002] Cold-formed steel is an economical cross-section profile, which has many advantages such as uniform cross-section, high product quality, low energy consumption and high economic benefits. At present, flying saws are widely used as standard sizing equipment in cold-formed steel production units, that is, flying saws are used to saw and cut section steels of a certain length and size according to customer requirements after the production of products is formed. As the main consumables of the flying saw machine, the circular saw blade of the flying saw machine will be damaged by tooth wear, breakage, saw blade deformation, etc. after sawing for a period of time, making it unusable. In order to save cost, people begin to study the method that makes saw blade continue to use, namely the repair method of saw blade. At present, the col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D63/20
Inventor 于立兴宋宇光宋颐高旺
Owner SHANXI DINGRONG COLD FORMED SECTIONS
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