CN106493518B - Steel alloy circle quenching roller production technology used in galvanized wire - Google Patents
Steel alloy circle quenching roller production technology used in galvanized wire Download PDFInfo
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- CN106493518B CN106493518B CN201610950961.8A CN201610950961A CN106493518B CN 106493518 B CN106493518 B CN 106493518B CN 201610950961 A CN201610950961 A CN 201610950961A CN 106493518 B CN106493518 B CN 106493518B
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Abstract
The invention discloses steel alloy circle quenching roller production technologies used in a kind of galvanized wire, have following steps：A, blanking circle is justified：B, welding processing：C, circle processing is returned：D, to size before the quenching distortion portion Vehicle Processing to quenching at quenching roller both ends；E, quenching treatment：F, temper：G, it forms.The present invention is made of 40Cr steel alloys, it is two times of this characteristics of common iron using alloy steel hardenability, improve the uniformity of the quenching a wide range of quenching hardness of roller, it is controlled by weld seam interlayer temperature when welding, it effectively prevents generating stomata and melting loss of elements inside weld seam, hardness is consistent with base material after selected welding material can fully meet quenching, zero defect, solves major diameter, ultra-thin-wall quenches the problem on deformation of roller after heat treatment, be conducive to stablize the quality of quenching roller, improve the service life of quenching roller, used in high-grade galvanization production line under 250 DEG C of environment temperatures.
Description
Technical field
The present invention relates to the steel alloy circle quenching roller production technologies used in a kind of galvanization production line.
Background technology
Quenching roller used in galvanization production line was all in the past import, and cost is higher, and thus domestic enterprise's progress technology is opened
Hair research, welding quenching roller after being justified using 45 steel plate rings, but used under normal temperature environment since 45 steel can only meet, quench the straight of roller
Diameter is up to Φ 1500mm, and galvanization production line top roller maximum gauge reaches Φ 2000mm, use environment temperature at 250 DEG C or so,
Therefore using the quenching roller of 45 steel, continuously there are quality problems, a shortest use is scrapped, has been difficult to for only 48 hours
Meet modern high technology requirement with rapid changepl. never-ending changes and improvements.
45# steel rings circle welding quenching roller, is only intended to normal temperature environment, diameter maximum Φ 1500mm, and top roller maximum gauge
For Φ 2000mm, the top roller of company is shaken in Baosteel import Japan three in 2014, quality problems continuously occurs, a most short use is only
48h, in the case, Baosteel assign trial-production task, and propose that former 45# Steel materials are changed to 40Cr steel alloys, because steel alloy is quenched
Permeability is that 45# steel is quenched deep 2 times, and such service life improves, and cost reduction is stablized through use quality, existing Baosteel it is big straight
Diameter top roller is that my company manufactures, such as the transformation project of Baosteel and the new line in Baosteel Zhanjiang.
Invention content
The technical problem to be solved by the present invention is to：It overcomes the deficiencies in the existing technology, alloy used in a kind of galvanized wire is provided
Steel circle quenching roller production technology reduces cost to improve the product qualification rate and service life of quenching roller, meets modern high-new
The requirement of technology.
The technical solution adopted by the present invention to solve the technical problems is：Steel alloy circle quenching roller used in a kind of galvanized wire
Production technology has following steps：
A, blanking circle is justified：It is required according to technology and considers to quench shrinking percentage, 40Cr steel plate blanking sizes are calculated, to 40Cr steel
Circle circle is carried out after plate heating；
B, welding processing：First the steel plate after circle circle is preheated, is then distinguished at the steel plate combination of inner and outside after circle circle
It is welded, the degree of main component is in wlding used in China and foreign countries junction：C:0.45~0.55%, Si：0.40
~0.50%；Mn：0.85~0.95%；Cr：1.25~1.35%；Ni：0.045~0.060%, when welding between control welding layer
Temperature is 400 DEG C ± 2 DEG C；
C, circle processing is returned：Circle forming is carried out back to the quenching roller after welding, quenching roller circularity is not more than 3mm；
D, to size before the quenching distortion portion Vehicle Processing to quenching at the quenching roller both ends handled well Hui Yuan；
E, quenching treatment：Quenching treatment is carried out to quenching roller；
F, temper：Temper is carried out to the quenching roller after quenching treatment；
G, it forms：The quenching roller turnery processing good to temper is to satisfactory size.
Specifically, in above steps：
In the step a, after 40Cr steel plates are heated 850 DEG C and keep the temperature one hour, circle circle is carried out.
In the step b, the steel plate weld after circle circle is preheated to 350 DEG C using electric heater unit, when welding, interior knot
It is selected at conjunction with the 10Mn2 welding wires of base material equality strength as wlding material, the hundred of main component in wlding used in outer junction
Divide than content and is：C:0.50%, Si：0.45%；Mn：0.90%；Cr：1.30%；Ni：0.05%, when welding, passes through electrical heating
It is 400 DEG C that device, which controls weld interpass temperature,.
Further, the electric heater unit includes the electric blanket for being separately positioned on weld seam both sides, and electric blanket circuit connects
It is connected to the temperature controller that control electric blanket is turned on and off.
In the step c, it is quenching roller after weld immediately into heating furnace to return circle processing, from 350 DEG C when welding
850 DEG C of heat preservations are heated to, soaking time keeps the temperature determination in three minutes by every millimeter of steel plate, and circle processing, Hui Yuan are carried out back after coming out of the stove
Quenching roller afterwards carries out 650 DEG C of tempering into heating furnace again and eliminates stress, and heat preservation cools to 200 DEG C with the furnace after three hours and comes out of the stove.
In the step d, quenching roller both ends process the cone for being 1 °~3 ° for length 300mm, taper respectively,
The cone both ends are symmetrical and diameter is consistent.
In the step e, it is 1020 DEG C that quenching treatment, which uses mid frequency induction hardening mode, hardening heat, the movement of induction coil
Speed is 90mm/min, while water-spraying control.
Temper in the step f is that the quenching roller that will have been quenched enters heating in circulated air heating furnace and keeps the temperature
Eight hours or more.
In the step g, the quenching roller body Vehicle Processing good to temper to the size that meets the requirements.
The beneficial effects of the invention are as follows：The present invention is made of 40Cr steel alloys, is ordinary steel using alloy steel hardenability
Two times of this characteristics of material improve the uniformity of the quenching a wide range of quenching hardness of roller, and when welding is controlled by weld seam interlayer temperature,
It effectively prevents generating stomata and melting loss of elements inside weld seam, selected welding material can fully meet hardness and mother after quenching
Material is consistent, zero defect, solves major diameter, the problem on deformation of ultra-thin-wall quenching roller after heat treatment, is conducive to stablize quenching roller
Quality, the service life of quenching roller is improved, used in high-grade galvanization production line under 250 DEG C of environment temperatures.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the schematic diagram behind quenching preceding Vehicle Processing quenching roller both ends quenching distortion portion.
Fig. 2 is the schematic diagram of the quenching roller obtained after quenching.
The structural schematic diagram of electric heater unit used when Fig. 3 is quenching treatment in the present invention.
1. 3. temperature controller of quenching 2. electric blanket of roller, 4. weld seam in figure
Specific implementation mode
Below by taking the 40Cr steel alloys circle quenching roller 1 of diameter of phi 2000 as an example, the invention will be further described.
Steel alloy circle quenching roller production technology used in a kind of galvanized wire has following steps：
A, blanking circle is justified：It is required according to technology and considers to quench shrinking percentage, 40Cr steel plate blanking sizes are calculated, to 40Cr steel
After plate is heated to 850 DEG C and keeps the temperature one hour, circle circle is carried out.
B, welding processing：350 DEG C first are preheated to using electric heater unit to the steel plate weld after circle circle, is then justified in circle
It is welded respectively at the steel plate combination of inner and outside afterwards, welding uses argon arc welding, interior junction to select and base material equality strength
10Mn2 welding wires are as wlding material, and the degree of main component is in wlding used in outer junction：C:0.50%, Si：
0.45%；Mn：0.90%；Cr：1.30%；Ni：0.05%, controlling weld interpass temperature by electric heater unit when welding is
400℃。
Specifically, as shown in figure 3, the electric heater unit includes being separately positioned on 1 cylinder weld seam of quenching roller, 4 both sides
Electric blanket 2,2 connection of electric blanket have the temperature controller 3 that is turned on and off of control electric blanket 2, and when welding passes through temperature control
Instrument 3 acts on, and when weld interpass temperature reaches 400 DEG C, the power-off of electric blanket 2 stops heating, when weld interpass temperature is once less than
At 400 DEG C, then 2 electrified regulation of electric blanket, so that it is guaranteed that 4 interlayer temperature of cylinder weld seam of quenching roller 1 is maintained at 400 DEG C, so as to
4 internal gas of weld seam is overflowed, prevents 4 inside of weld seam from generating stomata, and heat input can be reduced using argon arc welding, prevents element
Scaling loss.
C, circle processing is returned：By the quenching roller 1 after welding immediately into heating furnace, 850 DEG C of guarantors are heated to from 350 DEG C when welding
Temperature, this temperature both softener material increase plasticity, and play positive fire action, when preparing, and keeping the temperature for subsequent quenching heat treatment
Between then press every millimeter of steel plate and keep the temperature determination in three minutes, circle is carried out back after coming out of the stove and being handled, the quenching roller 1 after Hui Yuan is again into heating furnace
It carries out 650 DEG C of tempering and eliminates stress, heat preservation cools to 200 DEG C with the furnace after three hours and comes out of the stove, it is ensured that quenching 1 circularity of roller is not more than
3mm。
D, to the quenching distortion portion Vehicle Processing at 1 both ends of quenching roller handled well Hui Yuan to preceding size is quenched, i.e., in quenching roller 1
The cone that it is 2 ° for length 300mm, taper that both ends process respectively, the cone both ends are symmetrical and diameter one
It causes, as shown in Figure 1.
E, quenching treatment：Quenching treatment is carried out to quenching roller 1；Quenching treatment uses mid frequency induction hardening mode, and hardening heat is
1020 DEG C, the movement speed of induction coil is 90mm/min, while water-spraying control can not be kept away since quenching 1 diameter of roller is big, wall book
The deformation exempted from, thus it is cooling using inner core control, cooling system is put into quenching 1 cylinder of roller before quenching and is quenched, and
Ensure interference volume under the premise of precalculated shrinkage, quenching, which is shunk, holds cooling system tightly, it is ensured that circularity, the technology of reaching are wanted
It asks, 1 shape of quenching roller obtained after quenching is as shown in Figure 2.
F, temper：The quenching roller 1 quenched is entered in circulated air heating furnace and heats and keeps the temperature eight hours or more.
G, it forms：Quenching roller 1 turnery processing good to temper is to satisfactory size.
Excircle dimension of the cylinder of above-mentioned quenching roller 1 before quenching is Φ 2023, and endoporus is Φ 1963, cooling system outer circle
Size Φ 1943.5, the cylinder size that roller 1 is quenched after quenching are Φ 2003.
The present invention is made of 40Cr steel alloys, is two times of this characteristics of common iron using alloy steel hardenability, is improved
The uniformity of quenching roller 1 a wide range of quenching hardness, when welding, are controlled by 4 interlayer temperature of weld seam, effectively prevent weld seam 4
Inside generates stomata and melting loss of elements, and hardness is consistent with base material after selected welding material can fully meet quenching, zero defect, solution
Major diameter, the ultra-thin-wall of having determined quench the problem on deformation of roller 1 after heat treatment, are conducive to the quality for stablizing quenching roller 1, improve quenching
The service life of roller 1, used in high-grade galvanization production line under 250 DEG C of environment temperatures.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be implemented, and it is not intended to limit the scope of the present invention, all according to the present invention
Equivalent change or modification made by Spirit Essence should all cover within the scope of the present invention.
Claims (8)
1. steel alloy circle quenching roller production technology used in a kind of galvanized wire, it is characterized in that：With following steps：
A, blanking circle is justified：It is required according to technology and considers to quench shrinking percentage, calculated 40Cr steel plate blanking sizes, 40Cr steel plates are added
Circle circle is carried out after heat；
B, welding processing：First the steel plate after circle circle is preheated, is then carried out respectively at the steel plate combination of inner and outside after circle circle
It welds, the degree of main component is in wlding used in China and foreign countries junction：C:0.45~0.55%, Si：0.40~
0.50%；Mn：0.85~0.95%；Cr：1.25~1.35%；Ni：0.045~0.060%, temperature between control welding layer when welding
Degree is 400 DEG C ± 2 DEG C；
C, circle processing is returned：Circle forming is carried out back to the quenching roller after welding, quenching roller circularity is not more than 3mm；
D, to size before the quenching distortion portion Vehicle Processing to quenching at the quenching roller both ends handled well Hui Yuan；
E, quenching treatment：Quenching treatment is carried out to quenching roller；
F, temper：Temper is carried out to the quenching roller after quenching treatment；
G, it forms：The quenching roller turnery processing good to temper is to satisfactory size；
In the step c, it is quenching roller after weld immediately into heating furnace to return circle processing, is heated from 350 DEG C when welding
It is kept the temperature to 850 DEG C, soaking time keeps the temperature determination in three minutes by every millimeter of steel plate, and circle is carried out back after coming out of the stove and is handled, after Hui Yuan
It quenches roller and carries out 650 DEG C of tempering elimination stress into heating furnace again, heat preservation cools to 200 DEG C with the furnace after three hours and comes out of the stove.
2. steel alloy circle quenching roller production technology used in galvanized wire according to claim 1, it is characterized in that：The step
In rapid a, after 40Cr steel plates are heated 850 DEG C and keep the temperature one hour, circle circle is carried out.
3. steel alloy circle quenching roller production technology used in galvanized wire according to claim 1, it is characterized in that：The step
In rapid b, steel plate weld after circle circle is preheated to 350 DEG C using electric heater unit, and when welding, interior junction selection is same with base material
Equicohesive 10Mn2 welding wires are as wlding material, and the degree of main component is in wlding used in outer junction：C:
0.50%, Si：0.45%；Mn：0.90%；Cr：1.30%；Ni：0.05%, welding layer is controlled by electric heater unit when welding
Between temperature be 400 DEG C.
4. steel alloy circle quenching roller production technology used in galvanized wire according to claim 3, it is characterized in that：The electricity
Heating device includes the electric blanket for being separately positioned on quenching roller body weld seam both sides, and electric blanket connection has control electric blanket to open
The temperature controller for opening or closing.
5. steel alloy circle quenching roller production technology used in galvanized wire according to claim 1, it is characterized in that：The step
In rapid d, quenching roller both ends process the cone for being 1 °~3 ° for length 300mm, taper, the cone both ends respectively
Symmetrical and diameter is consistent.
6. steel alloy circle quenching roller production technology used in galvanized wire according to claim 1, it is characterized in that：The step
In rapid e, it is 1020 DEG C that quenching treatment, which uses mid frequency induction hardening mode, hardening heat, and the movement speed of induction coil is 90mm/min, together
When water-spraying control.
7. steel alloy circle quenching roller production technology used in galvanized wire according to claim 1, it is characterized in that：The step
Temper in rapid f is that the quenching roller that will have been quenched enters heating in circulated air heating furnace and keeps the temperature eight hours or more.
8. steel alloy circle quenching roller production technology used in galvanized wire according to claim 1, it is characterized in that：The step
In rapid g, the quenching roller body Vehicle Processing good to temper to the size that meets the requirements.
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| CN201610950961.8A CN106493518B (en) | 2016-11-02 | 2016-11-02 | Steel alloy circle quenching roller production technology used in galvanized wire |
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| CN100546760C (en) * | 2007-11-07 | 2009-10-07 | 刘青锋 | The production technology of circle quenching roller |
| CN100569432C (en) * | 2007-11-30 | 2009-12-16 | 刘青锋 | The production technology of circle quenching roller |
| CN102560021A (en) * | 2012-02-17 | 2012-07-11 | 南车四方车辆有限公司 | Heat treatment method for 40Cr wearing plate |
| CN104152640A (en) * | 2014-08-17 | 2014-11-19 | 成都亨通兆业精密机械有限公司 | Carrier roller processing technique conducive to reducing heat treatment defects |
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Effective date of registration: 20190816 Address after: 213144 Yangzhuang Village, Zou District Town, Zhonglou District, Changzhou City, Jiangsu Province Patentee after: Changzhou Yexing Heavy Engineering Technology Co., Ltd. Address before: 213144 Jiangsu province Changzhou City Zhonglou District Zou Industrial Road No. 10 Patentee before: Changzhou Spring Heavy Industry Technology Co., Ltd. |