Method for eliminating oil spots of thin nickel strap

Abstract

The invention provides a method for eliminating oil spots of a thin nickel strap. The method comprises the following process steps that S1, the thin nickel strap is prepared, specifically, a raw material nickel hot-rolled plate is subjected to multi-pass cold rolling to reach the thickness required by a finished product; S2, bright annealing is conducted, specifically, a cold-rolled sheet is put into a bright annealing furnace to be subjected to offline annealing treatment between passes, the annealing temperature ranges from 600 DEG C to 680 DEG C, and the heat preservation time ranges from 15 min to 30 min; the front and rear parts of the continuous bright annealing furnace are closed, a high-temperature inner container is filled with hydrogen protective atmosphere, hydrogen serving as protective gas enters from the outlet end and is discharged from the inlet end, and the flow of the protective gas is controlled; an injection air duct is arranged in the bright annealing furnace, and a strong circulating system is matched to etch heated atmosphere to the surface of the nickel strap, so that rapid and uniform strong convection heating is realized; and S3, degreasing cleaning is conducted, specifically, degreasing cleaning is conducted on the cold-rolled thin nickel strap, and the finished thin nickel strap is obtained. The method can improve the product quality, shorten the production period and reduce the cost.

Description

technical field [0001] The invention belongs to the technical field of nickel material processing and relates to a method for eliminating oil spots on thin nickel strips. Background technique [0002] Pure nickel N6 has excellent electromagnetic control performance, has been widely used in microelectronics, machinery and other fields, and is an indispensable part of today's information society. However, pure nickel needs to add lubricating oil during the rolling process. On the one hand, it can avoid damaging the surface of the nickel strip, and on the other hand, it can also reduce the rolling force. But this also inevitably brings surface quality problems. The incomplete combustion of the lubricating oil during the annealing process will easily lead to yellow oil spots on the surface of the nickel strip. [0003] The current domestic method for eliminating oil spots is generally to add new cleaning equipment. Patent CN210411628U discloses a nickel strip production and cle...

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Problems solved by technology

But this also inevitably brings surface quality problems, the incomplete combustion of lubricating oil in the annealing process will easily lead to yellow oil spots on the surface of the nickel strip

[0003] The current domestic method for eliminating oil spots is generally to add new cleaning equipment. Patent CN210411628U discloses a nickel strip production and cleaning device. During this time, push down the cylinder, so that the upper and lower wiping cottons are in contact with the nickel belt, so as to wipe the nickel belt, and then the nickel belt is blown through the upper and lower soot blowing pipes, and the soot blowing pipe is connected to the soot blowing pipe through the high-pressure blower. The pipe runs through the blowing pipe to blow soot on the upper and lower surfaces of the nickel strip, and the blown dust and debris are extracted through the soot extraction hood to ensure the cleanliness of the workshop, but the new equipment will inevitably increase the production cost

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