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Precautions before operation of tiger head scissors

Release time: 2020-09-10

Source: http://www.jiangsu-pack.com/

Views: 375

Precautions before operation of tiger head scissors
Tiger head scissors should be no stranger to everyone. It is a very important mechanical equipment in the field of steel cutting. When cutting steel, its cutting efficiency is fast and the cutting effect is good, so it is favored by many factories. trust. But during our operation, safety attention is essential.


Check items before operation of tiger head scissors

1. Before operation, you must check the cutting edge of the cutting machine to make sure that the installation is correct, the blade is not cracked, the knife holder bolt is firm, the protective cover is firm, the gap between the blades is adjusted, and the idle rotation is normal before operation.
2. The steel bar should be cut after straightening, and the steel bar should be held tightly when the material is broken. When multiple steel bars are cut at one time, the total cross-sectional area should be within the specified range.
3. When cutting the steel bar, the distance between the hand and the knife edge shall not be less than 15cm. When the hand grip end of the short material is less than 40cm, the short end of the steel bar should be pressed or clamped with a sleeve or clamp. It is strictly prohibited to feed the material directly by hand.
4. It is strictly forbidden to directly remove broken ends and debris near the knife edge by hand during mechanical operation. Non-operators are not allowed to stay within the scope of the steel bar swing and near the knife edge.
5. If the machine is running abnormally, the blade is skewed, etc., it should be shut down immediately for maintenance.

Requirements for the operation of tiger head shears
1. When cutting a rolled piece, the cutting edge should move together with the moving rolled piece, that is, the cutting edge should complete the cutting, moving action and the instantaneous indexing speed v of the cutting edge at the same time. The moving direction of the rolled piece should be the movement of the rolled piece The speed v0 is equal to or greater than 2%-3%, that is, v=(1-1.03, v0).
When cutting a rolled piece, if the instantaneous speed v of the cutting edge in the moving direction of the rolled piece is less than the moving speed v0 of the rolled piece, the cutting edge will hinder the movement of the rolled piece, which will cause the rolled piece to bend and even cause the rolling piece Rolling failure.
On the contrary, if the instantaneous speed v of the cutting edge in the moving direction of the rolling piece is much greater than the moving speed v0 of the rolling piece during the shearing process, a large tensile stress will be generated in the rolling piece, which will affect the rolling piece Shear quality and increase the impact load of the shearer.
2. According to different product specifications and user requirements, various lengths of specifications should be cut on the same shearing machine, and the length and size tolerances and the quality of the cut section should comply with relevant national regulations.
3. It can meet the requirements of rolling mill or unit productivity.

The above is some small knowledge about tiger head shears. Yuan's heavy industry has been committed to the manufacture of tiger head shears for many years. Knowing more about this aspect can help everyone better understand the knowledge of mechanical crushing.

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