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Method for producing steel composite Ti (titanium) plate for chimney

A production method and chimney technology, applied in the field of metallurgy, can solve the problems that the anti-corrosion performance of Ti plates cannot be replaced, the surface oxide scale is difficult to remove, and the surface quality cannot be guaranteed, so as to achieve the same plate difference, flat plate shape, and prevent cracking or the effect of tilting the head

Inactive Publication Date: 2018-11-30
WUYANG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The corrosion resistance of Ti plate cannot be replaced by the production of ordinary steel plate; the production of stainless steel technology, due to the high Ni content, the surface oxide scale is difficult to remove during the heating and rolling process, and the surface quality cannot be guaranteed. If the steel plate is peeled before entering the furnace, Increase the coating process, high production cost and long cycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The thickness of the steel composite Ti plate for the chimney in this example is 17mm, the thickness of the blank is 71mm, the thickness of the Ti layer is 6mm, and the base material is Q345B; the chemical composition and weight percentage of the base material are: C: 0.13%, Mn: 1.4%, P: 0.015% , S: 0.002%.

[0018] In this example, the steel composite Ti plate for chimneys is explosively compounded with Ti and Q345B base material to make a steel plate blank, and then the steel plate blank is made into a steel composite Ti plate for chimneys through heating, high-pressure dephosphorization, rolling, and straightening processes. The specific process steps As described below:

[0019] (1) Heating: The temperature of the preheating section of the steel plate blank is 640°C, the temperature of the heating section is 650°C, the temperature of the second heating section is 750°C, the temperature of the third heating section is 950°C, and the temperature of the soaking section...

Embodiment 2

[0025] The thickness of the steel composite Ti plate for the chimney in this example is 11mm, the thickness of the blank is 58mm, the thickness of the Ti layer is 6mm, and the base material is Q235B; the chemical composition and weight percentage of the base material are: C: 0.16%, Mn: 0.55%.

[0026] In this example, the steel composite Ti plate for chimney is explosively compounded with Ti and Q235B base material to make a steel plate blank, and then the steel plate blank is made into a steel composite Ti plate for chimney through heating, high-pressure dephosphorization, rolling, and straightening processes. The specific process steps As described below:

[0027] (1) Heating: The temperature of the preheating section is 640°C, the temperature of the heating section is 750°C, the temperature of the second heating section is 850°C, the temperature of the third heating section is 900°C, and the temperature of the soaking section is 900°C;

[0028] (2) High-pressure dephosphori...

Embodiment 3

[0033] The thickness of the steel composite Ti plate for the chimney in this example is 10mm, the thickness of the blank is 68mm, the thickness of the Ti layer is 5mm, and the base material is Q345B; the chemical composition and weight percentage of the base material are: C: 0.14%, Mn: 1.45%, P: 0.015% , S: 0.002%.

[0034] In this example, the steel composite Ti plate for chimneys is explosively compounded with Ti and Q345B base material to make a steel plate blank, and then the steel plate blank is made into a steel composite Ti plate for chimneys through heating, high-pressure dephosphorization, rolling, and straightening processes. The specific process steps As described below:

[0035] (1) Heating: The temperature of the preheating section is 600°C, the temperature of the heating section is 680°C, the temperature of the second heating section is 770°C, the temperature of the third heating section is 920°C, and the temperature of the soaking section is 925°C;

[0036] (2)...

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Abstract

The invention discloses a method for producing a steel composite Ti (titanium) plate for chimney. The method for producing the steel composite Ti plate for the chimney includes the steps of making steel billets through explosive cladding of Ti and Q235 or Q345 substrates, and then making he steel billets into the steel composite Ti plate for the chimney by heating, high-pressure phosphorus removal, rolling and straightening, wherein the thickness of the steel billets is 58-100 millimeters, the thickness of Ti 5-7 millimeters and the thickness of the Ti composite plate for the chimney 10-20 millimeters. The method for producing the steel composite Ti plate for the chimney has the advantages that the surface quality of the steel composite Ti plate for the chimney meets the requirements of GB / T 14977 Class B, and the steel plate is zero-grinding delivery; Ti plate thickness precision control is high, and when thickness of the Ti plate h is no more than 15 millimeters, same plate difference is controlled within 0.3 millimeter, and when the thickness of the Ti plate h is more than 15 millimeters and no more than 20 millimeters, same plate difference is controlled with 0.4 millimeter; after the Ti plate is rolled, the plate is flat, the straightness of the same meets the requirements of the European standard of 6 millimeters to 2 meters, and no cracking at the head and tail exists, which fully meets the needs of users.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a production method of steel composite Ti plates for chimneys. Background technique [0002] Chimney steel composite Ti plate is a kind of Ti and Q235 or Q345 substrate composite steel plate. Users have higher requirements on its surface quality, plate shape, difference between the same plate, and adhesion between Ti and substrate. The anti-corrosion performance of Ti plate cannot be replaced by the production of ordinary steel plate; the production of stainless steel technology, due to the high Ni content, the surface oxide scale is difficult to remove during the heating and rolling process, and the surface quality cannot be guaranteed. If the steel plate is peeled before entering the furnace, Increase the coating process, the production cost is high, and the cycle is long. There is an urgent need to develop a production method that can not only ensure the appear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B47/00B21B1/38B21C37/02
CPCB21B47/00B21B1/38B21B2001/386B21C37/02
Inventor 李晓光张晨光马驰刘建磊武杰
Owner WUYANG IRON & STEEL
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