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Hot-rolled titanium coil and surface quality control method thereof

A surface quality and control method technology, applied in metal rolling, profile control, metal rolling, etc., can solve problems such as poor surface quality of hot-rolled titanium coils, and achieve product quality improvement, labor cost saving, and surface quality improvement Effect

Inactive Publication Date: 2016-06-29
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the defect that the existing method for preparing hot-rolled titanium coils cannot essentially solve the problem of poor surface quality of hot-rolled titanium coils, and to provide a method with low investment cost, simple operation and effective improvement of the surface quality of hot-rolled titanium coils. Surface quality control method of hot-rolled titanium coil and hot-rolled titanium coil prepared therefrom

Method used

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  • Hot-rolled titanium coil and surface quality control method thereof
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  • Hot-rolled titanium coil and surface quality control method thereof

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Embodiment approach

[0029] According to a preferred embodiment of the present invention, the velocity of the water sprayed from the nozzle is 20-30m / s, preferably 24-26m / s. If the speed of the water sprayed by the nozzle is less than 20m / s, the spatter generated by the scraping and falling on the titanium slab cannot be completely blown away; if the speed of the water sprayed by the nozzle is greater than 30m / s, it will Seriously affect the service life of the nozzle.

[0030] In the present invention, preferably, the nozzle is installed before the finishing roll used in the finishing rolling process. The adoption of this preferred embodiment is more conducive to blowing away the spatter generated by scraping and falling on the titanium slab during the finish rolling process, so as to avoid the formation of indentation defects.

[0031] In the present invention, there is no special requirement on the shape of the nozzle, and it may be a commonly used nozzle shape in the field, for example, fan-s...

Embodiment 1-5

[0047] This embodiment is used to illustrate the hot-rolled titanium coil and its surface quality control method of the present invention.

[0048]Sponge titanium was smelted twice in a 10t vacuum consumable furnace. After smelting, it was forged to form a titanium slab. The thickness of the forged titanium slab is shown in Table 1. The forged titanium slab was milled, Heating, rough rolling (3 times), finish rolling (1 time) and coiling to produce hot-rolled titanium coils. Among them, the surface roughness Ra, heating temperature, intermediate slab thickness, rough rolling temperature, finish rolling temperature and coiling temperature of the titanium slab obtained by milling are shown in Table 1, respectively.

[0049] Wherein, in the finishing rolling process, the nozzle is installed before the finishing roll, and water is sprayed to the surface of the titanium slab through the nozzle, the shape of the nozzle, the angle between the opening direction of the nozzle and the s...

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Abstract

The invention relates to the field of titanium coil production, and discloses a method for controlling the surface quality of hot-rolled titanium coils. The method includes: sequentially heating, rough rolling, finish rolling and coiling a titanium slab formed by forging, wherein, in the During the finish rolling process, the surface of the titanium slab is purged with water. The surface quality of the hot-rolled titanium coil prepared by the surface quality control method of the present invention is significantly improved, the number of defects is greatly reduced, the types and probability of defects are correspondingly reduced, and the product quality is greatly improved. It is applied to cold rolling When using titanium coil blanks, the amount of grinding is greatly reduced, labor costs are saved, losses are reduced, production efficiency is improved, and the quality of cold-rolled titanium coils is also improved, and the method provided by the invention is low in input cost, simple in operation, and easy to implement .

Description

technical field [0001] The invention relates to the field of titanium coil production, in particular to a hot-rolled titanium coil and a surface quality control method thereof. Background technique [0002] At present, domestic production of hot-rolled titanium coils is rolled by continuous rolling mills or steel coil rolling mills. Due to the large difference in the metal properties of steel and titanium, defects such as poor plate shape, indentation, large scars, peeling, abrasions and cracks often occur during titanium rolling, which seriously affect the use of users. [0003] CN1040070076A discloses a surface treatment process for hot-rolled titanium coils for cold rolling, including performing mechanical dephosphorization on the surface with one shot blasting, treating local defects with a grinding method, one pickling to remove the surface oxide layer, and second shot blasting for surface treatment. Homogenization is characterized in that, through the following proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B45/02B21B37/44
CPCB21B45/0287B21B37/44
Inventor 李昌高王怀柳李剑
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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