CN109825765A

CN109825765A - A kind of high anti-seismic high intensity ecological ideas ribbed steel bare item and processing technology

Info

Publication number: CN109825765A
Application number: CN201910129290.2A
Authority: CN
Inventors: 陈玉; 张如江; 孙军钊; 费志国; 倪磊
Original assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Current assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Priority date: 2019-02-21
Filing date: 2019-02-21
Publication date: 2019-05-31

Abstract

The invention discloses a kind of high anti-seismic high intensity ecological ideas ribbed steel bare items, including steel billet；Its element components mass percent of the steel billet is as follows: C:0.22 ~ 0.25%, Si:0.20 ~ 0.50%, Mn:0.85 ~ 1.25%, P :≤0.03%, S :≤0.025%, surplus Fe and impurity；The ribbed steel bare processing technology is specific as follows: the first step, and by steel billet by heating stove heating, second step rolls temperature control；Third step, cooling control: using rapid suction cooling nozzles；And sub-sectional cooling is carried out, nozzle flow controls standard according to temperature and adjusts；Air-cooled roller-way requires fully open according to standard setting speed ratio, insulation cover；High anti-seismic high intensity ecological ideas ribbed steel bare item of the invention and processing technology save national resources, and Improving The Quality of Products produces high-quality high-strength and low-cost steel, under the premise of guaranteeing quality control, reduce resource consumption.

Description

A kind of high anti-seismic high intensity ecological ideas ribbed steel bare item and processing technology

Technical field

The present invention relates to a kind of high anti-seismic high intensity ecological ideas steel, and in particular to a kind of high anti-seismic high intensity ecological green Colour band rib steel wire rod and its processing technology belong to steel manufacturing process technical field.

Background technique

Since the 80's of 20th century, high-speed wire mill has become the prevailing technology of wire product production, by In the raising of mill speed, rolled piece temperature rise in the entire operation of rolling increases, and so that finishing temperature is higher than 1000 DEG C or more, wire rod Finished product coarse grains, the microscopic structure of steel and mechanical performance are extremely uneven, cause HRB400E series of high speed wire rod to need high Alloying component, in existing high-speed rod component, silicone content (0.30-0.60%), Mn(1.30-1.50%), part steel mill is very A small amount of high price V element can extremely be added；It greatly improves production cost and increases resource loss.

Summary of the invention

To solve the above problems, the invention proposes a kind of high anti-seismic high intensity ecological ideas ribbed steel bare item and processing works Skill saves national resources, and Improving The Quality of Products produces high-quality high-strength and low-cost steel, in the premise for guaranteeing quality control Under, reduce resource consumption.

High anti-seismic high intensity ecological ideas ribbed steel bare item of the invention, including steel billet；Its element components matter of the steel billet It is as follows to measure percentage: C:0.22 ~ 0.25%, Si:0.20 ~ 0.50%, Mn:0.85 ~ 1.25%, P :≤0.03%, S :≤0.025%, remaining Measure Fe and impurity.

As preferred embodiment, the steel billet is made of the square billet raw material of 150*150mm or 165*165mm.

A kind of high anti-seismic high intensity ecological ideas ribbed steel bare processing technology, the technique are specific as follows:

The first step, by steel billet by heating stove heating, its heating temperature of the heating furnace is two heating degree: 825 ± 25 DEG C；One adds Temperature: 970 ± 20 DEG C；Soaking section temperature: 1020 ± 30 DEG C, tapping temperature: 920 ± 15 DEG C；

Second step rolls temperature control；The operation of rolling is controlled according to following temperature, and charging temperature is not less than 500 DEG C, BGV1:1070 ±25℃；Charging temperature is lower than 500 DEG C, BGV1:1060 ± 25 DEG C；Into final rolling temperature: 890 ± 25 DEG C, laying temperature: 735 ± 5 DEG C, blower temperature: 1#-5# is respectively 60 DEG C, 75 DEG C, 80 DEG C, 80 DEG C and 50 DEG C；Rolled piece belongs within the scope of 800-950 DEG C The recrystallization zone of austenite, and duplex structure is formed with ferrite, the present invention rolls within this temperature range, steel austenite phase Crystal grain recrystallizes, and the austenite phase transition after recrystallization generates ferrite, achievees the purpose that refine crystal grain；

Third step, cooling control: using rapid suction cooling nozzles；And sub-sectional cooling is carried out, nozzle flow is controlled according to temperature and is marked Quasi- adjustment；Air-cooled roller-way requires fully open according to standard setting speed ratio, insulation cover；Water cooling and the scattered volume after rolling in controlled rolling It is cooling, to obtain the good wire rod of structure property.

As preferred embodiment, the tapping temperature is the head highest point after 1# machine.

The present invention compared with prior art, high anti-seismic high intensity ecological ideas ribbed steel bare item of the invention and processing work Skill；By improving rolled piece structure, the rolling temperature and roll control of rolled piece are improved；Set reasonable controlled rolling and controlled cooling parameter and after Continuous air-cooled cooling technique improves the product quality of steel to realize, reduces alloy and is added, and steel are rolled through cooling controlling and rolling controlling process, Steel tissue grain size can be refined to 9 grades or more, and steel mechanics performance meets high tensile reinforcement antidetonation index request, steel alloy at This comparison hot rolling technology is substantially reduced.

Detailed description of the invention

Fig. 1 is that rolled piece of the invention heats temperature-controlled parameter schematic diagram.

Fig. 2 is that rolled piece of the invention rolls temperature-controlled parameter schematic diagram.

Fig. 3 is water tank parameter schematic diagram of the invention.

Fig. 4 is air-cooled roller-way speed ratio parameter schematic diagram of the invention.

Specific embodiment

A kind of high anti-seismic high intensity ecological ideas ribbed steel bare item, including steel billet；Its element components quality hundred of the steel billet Divide ratio as follows: C:0.22 ~ 0.25%, Si:0.20 ~ 0.50%, Mn:0.85 ~ 1.25%, P :≤0.03%, S :≤0.025%, surplus Fe And impurity.

Wherein, the steel billet is made of the square billet raw material of 150*150mm or 165*165mm.

As shown in Figure 1, the first step, by steel billet by heating stove heating, its heating temperature of the heating furnace is two heating degree: 825 ±25℃；One heating degree: 970 ± 20 DEG C；Soaking section temperature: 1020 ± 30 DEG C, tapping temperature: 920 ± 15 DEG C；

As shown in Fig. 2, second step, rolls temperature control；The operation of rolling is controlled according to following temperature, and charging temperature is not less than 500 DEG C, BGV1:1070 ± 25 DEG C；Charging temperature is lower than 500 DEG C, BGV1:1060 ± 25 DEG C；Into final rolling temperature: 890 ± 25 DEG C, spinning Temperature: 735 ± 5 DEG C, blower temperature: 1#-5# is respectively 60 DEG C, 75 DEG C, 80 DEG C, 80 DEG C and 50 DEG C；Rolled piece is in 800-950 DEG C of model Belong to the recrystallization zone of austenite in enclosing, and form duplex structure with ferrite, the present invention rolls within this temperature range, steel Austenite phase crystal grain recrystallizes, and the austenite phase transition after recrystallization generates ferrite, achievees the purpose that refine crystal grain；

As shown in Figure 3 and Figure 4, third step, cooling control: using rapid suction cooling nozzles；And carry out sub-sectional cooling, nozzle flow Standard adjustment is controlled according to temperature；Air-cooled roller-way requires fully open according to standard setting speed ratio, insulation cover；Water in controlled rolling Loose coil colling cold and after rolling, to obtain the good wire rod of structure property.

Wherein, the tapping temperature is the head highest point after 1# machine.

When implementation, firstly, purchasing or producing the square billet raw material of 150*150mm or 165*165mm a kind of, all kinds of members of steel billet The ingredient of element meets above-mentioned parameter standard；Then, it is controlled according to above-mentioned heating furnace heating temperature, then, steel rolling rolling The control of Shi Caiyong cooling controlling and rolling controlling process；Then, in production process according to the variation of water temperature and temperature, appropriate adjustment cooling water pressure, Flow；When production, air-cooled roller-way requires fully open according to standard setting speed ratio, insulation cover.

6, preparation before producing:

(1) water examination is done in advance, it is desirable that examines turbidity, suspended matter and Cl^-；；

(2) ensure that gas source and pressure are normal；

(3) heating furnace tapping guarantees phosphor-removing effect；

(4) two rack of finish rolling, Dual module temperature measuring equipment are verified in advance, guarantee that measurement is accurate.

By accordingly producing, the performance of steel and metallographic structure are up to state standards requirement, and can get height The product of intensity high anti-seismic product quality.

Above-described embodiment is only better embodiment of the invention, therefore all according to structure described in present patent application range It makes, the equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.

Claims

1. a kind of high anti-seismic high intensity ecological ideas ribbed steel bare item, it is characterised in that: including steel billet；Its element group of the steel billet Part mass percent is as follows: C:0.22 ~ 0.25%, Si:0.20 ~ 0.50%, Mn:0.85 ~ 1.25%, P :≤0.03%, S :≤ 0.025%, surplus Fe and impurity.

2. high anti-seismic high intensity ecological ideas ribbed steel bare item according to claim 1, it is characterised in that: the steel billet by The square billet raw material of 150*150mm or 165*165mm is constituted.

3. a kind of high anti-seismic high intensity ecological ideas ribbed steel bare processing technology, which is characterized in that the technique is specific as follows:

Second step rolls temperature control；The operation of rolling is controlled according to following temperature, and charging temperature is not less than 500 DEG C, BGV1:1070 ±25℃；Charging temperature is lower than 500 DEG C, BGV1:1060 ± 25 DEG C；Into final rolling temperature: 890 ± 25 DEG C, laying temperature: 735 ± 5 DEG C, blower temperature: 1#-5# is respectively 60 DEG C, 75 DEG C, 80 DEG C, 80 DEG C and 50 DEG C；

Third step, cooling control: using rapid suction cooling nozzles；And sub-sectional cooling is carried out, nozzle flow is controlled according to temperature and is marked Quasi- adjustment；Air-cooled roller-way requires fully open according to standard setting speed ratio, insulation cover.

4. high anti-seismic high intensity ecological ideas ribbed steel bare processing technology according to claim 3, it is characterised in that: institute Stating tapping temperature is the head highest point after 1# machine.