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Method for producing pure titanium strip through cold rolling

A titanium strip and pure titanium technology, which is applied in the field of producing cold-rolled large-volume heavy industrial pure titanium strip, can solve the problems of being unsuitable for large-scale industrial production, low production efficiency, and cumbersome procedures, and achieve ideal mechanical properties, low cost, and satisfactory The effect of market demand

Inactive Publication Date: 2011-04-06
SHANDONG IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires three times of cold rolling and three times of degreasing annealing. The process is cumbersome, the cost is high, and the production efficiency is low, so it is not suitable for mass industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: rolling 0.8mm thick cold-rolled titanium coil

[0030] The hot-rolled raw materials with a specification of 3.5mm×1100mm are subjected to surface treatment by shot blasting and pickling to ensure that the oxide film on the surface of the titanium strip is cleaned, and then enter the six-roll reversible cold rolling mill for rolling. The specific process is as follows:

[0031] The surface-treated hot-rolled material was sent into the rolling mill, and rolled for 5 passes under the conditions of rolling speed less than 4m / s, emulsion concentration of 3.1%, temperature of 56°C, and saponification value of 155g / L. The specific rolling process parameters are shown in the following table 1

[0032] The technological parameter of the first rolling pass of table 1 embodiment 1

[0033] pass

[0034] Next, the titanium strip after one rolling pass enters an argon shielded annealing furnace, and the purity of the argon reaches 99.99%. The annealing temp...

Embodiment 2

[0039] Embodiment 2: rolling 0.8mm thick cold-rolled titanium coil

[0040]Other process parameters in Example 2 are the same as those in Example 1 except pass reduction rate and raw material thickness. First, the surface treatment of the hot-rolled titanium strip with a size of 3.25mm×1100mm is carried out through shot blasting and pickling to ensure that the oxide film on the surface of the titanium strip is cleaned. Then, enter the six-high reversing cold rolling mill for rolling, the specific process is as follows:

[0041] The surface-treated hot-rolled material was sent into the rolling mill, and rolled for 5 passes under the conditions of rolling speed less than 3m / s, emulsion concentration of 3.0%, temperature of 54°C, and saponification value of 158g / L. The specific rolling process parameters are shown in Table 3 below.

[0042] The technological parameter of the first rolling pass of table 3 embodiment 2

[0043] pass

[0044] Next, the titanium strip af...

Embodiment 3

[0049] Embodiment 3: rolling 0.5mm thick cold-rolled titanium coil

[0050] Other process parameters in Example 3 are the same as those in Example 1 except pass reduction rate and raw material thickness. First, the surface treatment of the hot-rolled titanium strip with a size of 3.0mm×1170mm is carried out through shot blasting and pickling to ensure that the oxide film on the surface of the titanium strip is cleaned. Then, enter the six-high reversing cold rolling mill for rolling, the specific process is as follows:

[0051] The surface-treated hot-rolled material was sent into the rolling mill, and rolled for 7 passes under the conditions of rolling speed less than 3m / s, emulsion concentration of 3.0%, temperature of 54°C, and saponification value of 154g / L. The specific rolling process parameters are shown in Table 5 below.

[0052] The technological parameter of the first rolling pass of table 5 embodiment 3

[0053] pass

[0054] Next, the titanium strip af...

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Abstract

The invention discloses a method for producing a pure titanium strip through cold rolling, comprising the steps of pickling, cold-rolling, degreasing and annealing hot-rolled titanium strips. The method is characterized by adopting a 1500mm 6-high reversing cold rolling mill to cold-roll the pickled hot-rolled titanium strips. The cold rolling method comprises the following steps: sending the pickled hot-rolled titanium strips to the 1500mm 6-high reversing cold rolling mill to be rolled in first rolling length, annealing the titanium strips rolled in first length; and resending the annealed titanium strips to the 1500mm 6-high reversing cold rolling mill to be rolled in second rolling length. Large-coil heavy titanium strips with thickness of 0.3-0.8mm can be obtained on the conventional 6-high reversing cold rolling mill unit through two rolling lengths; therefore, the method is simple in procedures, low in cost and easy to realize rolling and can meet the requirement of production without improving the rolling mill.

Description

technical field [0001] The invention belongs to the technical field of metal material processing. Specifically, the invention relates to a cold-rolling method for industrial pure titanium strips, in particular to a method for producing cold-rolled large coils of heavy industrial pure titanium strips on a six-roll reversing rolling mill. Background technique [0002] Cold-rolled pure titanium plate and strip are mainly used in various fields such as condenser tubes in power plants, plate heat exchangers, chemical equipment and construction. Titanium is a hexagonal crystal metal, and the crystal orientation of its crystal grains is consistent with a specific direction, and it is a material with significant anisotropy. These characteristics of titanium make the actual rolling pressure of the titanium strip much higher than the value calculated based on the strength of the ordinary tensile test, and the rolling pressure is the most basic parameter to determine the rolling proces...

Claims

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Application Information

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IPC IPC(8): C22F1/18
Inventor 尹翠兰汤化胜王超高荣庆周平商玉华杨旭厉文超李四军孙建卫康华伟
Owner SHANDONG IRON & STEEL CO LTD
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