Hot-rolling seamless pipe antioxidation disc device

Abstract

The invention provides a hot-rolling seamless pipe antioxidation disc device. The device comprises a power transmission mechanism and at least four disc transmission devices connected in series. The power transmission mechanism comprises a base, a motor, a speed reducer, a coupler and a driving wheel. Each one of the disc transmission devices comprises a stepped shaft, a chain wheel, a disc, resin tiles, tile covers, a tank and a bearing pedestal. The two resin tiles are fixed to the tank with water inlet and outlet pipes by the tile cover. The stepped shaft is inlaid in the resin tiles. The middle of the stepped shaft is provided with the disc. An extension end of the stepped shaft is provided with the chain wheel. The chain wheel is connected to the driving wheel by a chain. The shaft of the driving wheel is inlaid in the bearing pedestal with the bearing. The shaft of the driving wheel is connected to the motor by the speed reducer and the coupler. The hot-rolling seamless pipe antioxidation disc device prolongs a motor service life, prevents an equipment accident, reduces spare part consumption, reduces labor intensity, reduces an equipment cost and a production cost and improves seamless steel pipe quality and rolling yield.

Description

technical field [0001] The invention belongs to the field of steel rolling machinery and equipment, and in particular relates to a disc device for anti-oxidation treatment of the inner surface of a hot-rolled seamless steel pipe. Background technique [0002] The anti-oxidation disc device for hot-rolled seamless steel pipe is installed between the piercer and the continuous rolling mill. In the process of continuous rolling, the waste pipe will have defects such as inner surface scarring. The blank pipe rolled by the piercer rolls down on the anti-oxidation disc through the inclined grating bar. At this time, the disk drives the blank tube to rotate at a constant speed. Adhesion on the inner wall of the waste pipe to ensure that the inner surface of the waste pipe is not oxidized and improve the quality of the inner surface of the steel pipe. The original design of the anti-oxidation disc device has the following problems: [0003] 1. The anti-oxidation table is composed...

AI Technical Summary

Problems solved by technology

Because the waste pipe pierced by the piercer rolls down on the anti-oxidation disc through the oblique grating bar, it will have a greater impact on the disc, and the coupling bolts and the bearing gland bolts of the worm gear reducer will loosen due to the impact, resulting in Coupling failure

[0004] 2. The waste pipe (temperature 1000-1100°C) rotates above the disc, and the waste pipe is relatively close to the worm gear reducer. First, the transmission motor is often burned; second, the lubricating oil inside the box is often dried, and the worm gear reduces The bearings in the device are ground due to lack of lubricating oil, which causes the disc to not rotate, the empty tube to not rotate, and the anti-oxidation effect is not good, and the inner surface of the tube is scarred (the phenomenon of irregular pits on the inner surface of the tube is called scarring, belongs to the waste pipe)

Such failures occur 1 to 2 times a week, and waste products will be produced every time a failure occurs, and the steel pipe yield will drop sharply

Moreover, it must be overhauled on weekly maintenance days to replace damaged parts.

cause waste of human and material resources

[0005] 3. Because when rolling steel pipes of different specifications, the raw pipe needs different rotation speeds on the anti-oxidation disc to achieve the ideal anti-oxidation effect. In the original design, the motor selected for the transmission device has no speed regulation function, and the disc can only rotate at a certain speed of rotation, thus affecting the quality of the internal surface of the tube

[0006] Due to the above-mentioned many defects in the original design of the anti-oxidation disc device, it often causes production interruption, damage to spare parts, increased equipment costs, and seriously affects product quality.

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