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Technological method for improving surface roughness of cold-rolled titanium strip coil

A technology of surface roughness and process method, which is applied in the direction of workpiece surface treatment equipment, metal rolling, manufacturing tools, etc., can solve the problems of sand pollution, surface pitting, and rapid roll roughness attenuation, and achieve simple and convenient operation, Improving stamping performance and avoiding the effect of bell annealing sticking

Active Publication Date: 2020-11-03
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain high surface roughness, the prior art generally adopts the surface sand blasting process, but there is a large surface internal stress after sand blasting, the shape of the plate deteriorates, and at the same time, the sand blasting production efficiency is low, the dust pollution is serious, the production cost is high, and There is sand pollution on the surface; or after the surface of the roll is roughened by laser, a roll with a high roughness surface is obtained, and then the roughness of the titanium coil is improved by rolling and transfer printing, but after the roughness of the roll is increased, the friction between the roll and the titanium strip is greatly reduced. increase, which not only leads to difficulty in rolling reduction, but also causes surface pitting and other defects due to material drop, and the roughness of the roll decays quickly

Method used

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  • Technological method for improving surface roughness of cold-rolled titanium strip coil
  • Technological method for improving surface roughness of cold-rolled titanium strip coil
  • Technological method for improving surface roughness of cold-rolled titanium strip coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A process method for improving the surface roughness of cold-rolled titanium coils, specifically: prepare an emulsion with a concentration of 0.6% by using a non-ionic steady-state rolling lubricant and desalinated water in a ratio of 0.6:100, and the movement of the emulsion Viscosity is 45mm 2 / s, the stability index ESI is 0.70, the emulsion is first circulated in the emulsion pipeline circulation system of the 1450 cold rolling mill archway for 10 hours, the temperature during circulation is 50 °C, and the thickness of the titanium coil is changed by 1450 four-roll cold rolling mill Roll from 4.00mm to 1.50mm, the total deformation is 62.50%, and the roll roughness is 0.500μm. Emulsion injection is carried out at the same time as rolling. The emulsion injection volume is 15L / min. The rolling parameter table is shown in Table 1. For titanium coils Perform degreasing and measure the roughness as shown in Table 2, the roughness of the titanium coil is 1.500-1.670μm.

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Embodiment 2

[0027] A process for improving the surface roughness of cold-rolled titanium coils, specifically: prepare an emulsion with a concentration of 1.0% in a ratio of 1:100 with non-ionic steady-state rolling lubricant and desalinated water, and the movement of the emulsion The viscosity is 45mm2 / s, and the emulsion stability index ESI is 0.75; the emulsion is first circulated in the emulsion pipeline circulation system of the 1450 cold rolling mill archway for 5 hours, and the temperature during circulation is 40 ° C, and the 1450 four-roll cold rolling mill is used to The thickness of the titanium coil is rolled from 3.00mm to 1.00mm, the total deformation is 66.67%, the roll roughness is 0.400μm, and the emulsion injection is carried out at the same time as rolling. The emulsion injection volume is 20L / min. The rolling parameters are shown in Table 3 , Degrease the titanium coil and measure the roughness as shown in Table 4, the roughness is 1.200-1.350 μm.

[0028] Table 3 Rolli...

Embodiment 3

[0033] A method for improving the surface roughness of cold-rolled titanium coils, specifically: prepare an emulsion with a concentration of 0.9% by using a non-ionic steady-state rolling lubricant and desalinated water in a ratio of 0.9:100, and the kinematic viscosity of the emulsion is 45mm 2 / s, the emulsion stability index ESI is 0.65; first circulate the emulsion in the emulsion pipeline circulation system of the archway of the 1450 cold rolling mill for 10 hours, the temperature during circulation is 45°C, and use the 1450 four-roll cold rolling mill to coil the titanium strip The thickness is rolled from 3.50mm to 1.20mm, the total deformation is 65.71%, and the roll roughness is 0.300μm. The emulsion injection is carried out at the same time as rolling. The emulsion injection volume is 15L / min. The rolling parameter table is shown in Table 5. For titanium The coils were degreased, annealed, and the roughness was measured as shown in Table 6, and the roughness range wa...

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Abstract

The invention discloses a technological method for improving the surface roughness of a cold-rolled titanium strip coil. The method specifically comprises the steps that firstly, desalted water and anon-ionic steady-state rolling lubricant are added in proportion, and emulsion with the concentration of 0.6-1.0% is prepared; secondly, at the temperature of 40-50 DEG C, the emulsion in the first step circulates for 5-10 hours in a system; thirdly, a thick titanium strip with the thickness being 3.00-4.00 mm is rolled for multiple times through a four-roller press till the thickness is 1.00-1.50mm, the emulsion is sprayed in the rolling process, and the titanium strip coil with the emulsion on the surface is obtained for standby application; and fourthly, the emulsion on the surface of thetitanium strip coil in the third step is removed by adopting a degreasing line to obtain the high-roughness cold-rolled titanium strip coil with the roughness being more than or equal to 1.200 mu m. By controlling emulsion parameters and rolling deformation parameters and adopting a low-roughness roller, the titanium strip coil with the roughness of 1.2 microns or above can be stably obtained, andthe method has the advantages of being easy to operate, high in production efficiency and low in cost.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and mainly relates to a process method for improving the surface roughness of cold-rolled titanium coils. Background technique [0002] Cold-rolled titanium coils have the advantages of low density, high specific strength, corrosion resistance, good forming and welding process performance, and are widely used in petroleum, chemical, seawater desalination, nuclear power and other fields. Compared with stainless steel, titanium has greater deformation resistance, greater rolling resilience, and significant work hardening. Therefore, during cold rolling, the rolling force is greater, the surface friction between the roll and the titanium coil is greater, and the pass deformation is smaller, making cold rolling titanium Coil preparation is more difficult. In order to improve rolling efficiency, low-roughness work rolls are often used in industrial production for rolling, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B45/02
CPCB21B1/22B21B45/0206B21B45/0218B21B2001/221B21B2261/14B21B2261/04
Inventor 陶会发李渤渤王卫超霍震
Owner LUOYANG SUNRUI TI PRECISION CASTING