Novel process for producing hot rolled threaded steel with on-line surface rustproof function through post-rolling water penetration controlled cooling process

A rebar and new process technology, applied in the field of hot-rolled rebar production line, can solve the problems of severe corrosion of hot-rolled products, achieve high economy and environmental protection, reduce the addition of strengthening alloy elements, and meet the performance requirements

Inactive Publication Date: 2015-12-09
WUHAN SAIEN METALLURGICAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an on-line and high-efficiency anti-rust production process for the surface of rolled materials when each hot-rolled rebar production line adopts the production process of cooling through water after rolling, so as to solve the problem of corrosion in the atmosphere of hot-rolled materials produced through water cooling. serious problem

Method used

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  • Novel process for producing hot rolled threaded steel with on-line surface rustproof function through post-rolling water penetration controlled cooling process
  • Novel process for producing hot rolled threaded steel with on-line surface rustproof function through post-rolling water penetration controlled cooling process
  • Novel process for producing hot rolled threaded steel with on-line surface rustproof function through post-rolling water penetration controlled cooling process

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Embodiment 1

[0029] In order to further clarify the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments. like figure 1 As shown in the figure, a new process of producing threaded steel on-line surface rust prevention by water-piercing and cooling-controlled process after hot rolling, the specific production process mainly includes billet heating, billet rolling, water-piercing cooling after rolling, surface cleaning, surface strengthening Oxidation, shearing and bundling, packaging and warehousing and other processes are implemented in accordance with the following steps:

[0030] Step 1: Send the billet into the heating furnace for heating;

[0031] Step 2: Roll the rolled piece according to the process requirements of the process rolling schedule;

[0032] Step 3: The steel bar rolled by the finished product frame enters the water-through cooler, the cooling pressure is 1.1-2.0Mpa, and the sur...

Embodiment 2

[0039] In order to further clarify the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments. like figure 2 As shown in Fig. 1, a new process for producing rebar on-line surface rust prevention by water-piercing and cooling-controlled process after hot-rolling, the specific production process mainly includes billet heating, billet rolling, surface cleaning, surface strong oxidation, and water-piercing after rolling. Cooling, shearing and bundling, packaging and warehousing and other processes are implemented in accordance with the following steps:

[0040] Step 1: Send the billet into the heating furnace for heating;

[0041] Step 2: Roll the rolled piece according to the process requirements of the process rolling schedule;

[0042] Step 3: After rolling, the rebar enters the surface purification treatment device, which initially cleans the non-dense scale attached to the surface of...

Embodiment 3

[0048] In order to further clarify the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments. like image 3 As shown in Fig. 1, a new process for producing rebar on-line surface rust prevention by water-piercing and cooling-controlled process after hot-rolling, the specific production process mainly includes billet heating, billet rolling, surface cleaning, surface strong oxidation, and water-piercing after rolling. Cooling, surface cleaning, surface strong oxidation, shearing and bundling, packaging and warehousing and other processes are implemented in accordance with the following steps:

[0049] Step 1: Send the billet into the heating furnace for heating;

[0050] Step 2: Roll the rolled piece according to the process requirements of the process rolling schedule;

[0051] Step 3: After rolling, the rebar enters the surface purification treatment device, which initially cleans the...

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Abstract

The invention relates to a novel process for producing hot rolled threaded steel with an on-line surface rustproof function through a post-rolling water penetration controlled cooling process, discloses a low-cost manufacturing process for producing the hot rolled threaded steel, and is mainly specific to a novel process for producing the hot rolled threaded steel with the on-line surface rustproof function by the adoption of the water penetration hot rolled threaded steel production process after hot rolling. By means of the thermodynamic and dynamic principles of an oxidation reaction of the threaded steel, the threaded steel is subjected to special surface cleaning treatment and an oxygen penetration process before or after the water penetration controlled cooling process of the hot rolled threaded steel, or before and after the cooling process of the hot rolled threaded steel, so that an even and compact oxidation film is formed on the surface of the hot rolled threaded steel rapidly; meanwhile, the components and uniformity of the oxidation film are controlled, so that the propose of corrosion resistance is achieved and the problem that the hot rolled threaded steel produced through the water penetration cooling is corroded severely in the atmosphere is solved. The novel process for producing the hot rolled threaded steel can not only improve the customer satisfaction degree, but also make a positive contribution to energy conservation and environmental protection of China.

Description

technical field [0001] The invention relates to the field of metallurgy and metal material manufacturing, in particular to a hot-rolled threaded steel production line and an on-line rust-proof production process for the surface of the threaded steel. Background technique [0002] Domestic hot-rolled rebar production lines generally have two different post-rolling cooling processes, one is natural cooling after hot-rolling; the other is to reduce the cost of hot-rolled material alloys, and the production process of passing through water after rolling is adopted. Cooling inhibits the recrystallization of the rolled piece after rolling, thereby refining the grains and obtaining the expected metallographic structure to improve the mechanical properties. [0003] Hot-rolled rebar adopts the production method of natural cooling after rolling, and a certain amount of strengthening alloy elements need to be added to the steel. After rolling, a layer of relatively dense oxide scale i...

Claims

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Application Information

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IPC IPC(8): C23C8/14B21B45/02
Inventor 梁正宝张炯明赖朝彬邹利雄原明
Owner WUHAN SAIEN METALLURGICAL TECH DEV
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