CN106694583A - High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof - Google Patents
High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof Download PDFInfo
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- CN106694583A CN106694583A CN201710125508.8A CN201710125508A CN106694583A CN 106694583 A CN106694583 A CN 106694583A CN 201710125508 A CN201710125508 A CN 201710125508A CN 106694583 A CN106694583 A CN 106694583A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
- B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/17—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a high-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and a manufacturing method thereof. The roller adopts a high-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy comprising the following chemical components in percentage by mass: 0.2-0.6% of C, 5.0-7.0% of Cr, 2.5-3.0% of W, 1.5-3.0% of Mo, 1.5-2.5% of V, 0.5-1.0% of Nb, 0.3-1.0% of Si, 0.3-1.0% of Mn, 1.4-2.5% of B, 0.3-1.0% of Cu, 0.8-2.0% of Ni, S not more than 0.02, P not more than 0.02, 0.3-0.8% of CeO2, 40% of WC, and the balance of Fe. Then, the alloy is forged, annealed, machined, heated, grinded and inspected to finally prepare the guide and guard roller. The prepared steel-bonded hard alloy guide and guard roller has such excellent physical and mechanical properties as high hardness, wear resistance, high-temperature oxidation resistance and heat shock resistance, prolongs the service life of a guide roller, improves the rolled steel production efficiency and the product quality, is low in production cost, is higher in cost performance, and is higher in economic benefit and social benefit.
Description
Technical field
It is low the present invention relates to a kind of steel rolling deflector roll, especially a kind of boron high for steel rolling continuous-rolling system rolling guide
Alloy high speed steel base WC40 steel bonded carbide Roll Collar and its manufacture method.
Background technology
Guide and guards refers to a kind of important spare part for guiding and escorting rolled piece to pass in and out milling train during Rolling production, is used
In guiding rolled piece to pass in and out pass by required state during section rolling, to ensure that rolled piece realizes set deformation.Lead
Whether the design and use for defending device are proper, directly influence the quality of product and the production capacity of milling train.
Rolling guide be steel rolling mill when section bar, bar or wire rod rolling is carried out, rolled piece is led into milling train
A kind of guider in roll pass.The steel rolling that Roll Collar is mainly guiding, auxiliary rolling blank or finished product run through is used
Guide device device, deflector roll is mostly important consumable accessory in rolling guide, is steel plant bar and wire rod rolling line
On a very crucial part, domestic Year's consumption more than 1,000,000, international market Year's consumption 800~10,000,000
More than part, as the main consumable part on high-speed rod-rolling mill, consumption is very big.
In the wire rod operation of rolling, steel billet is filled with temperature (900~1250 DEG C) and speed higher higher by guide and guard
Put.With the development of steel rolling technology, the speed of steel rolling is more and more faster, and the finish to gauge speed of current bar and general section bar is
18m/s or so, the finish to gauge speed of wire rod has reached 80m/s~140m/s or so, and the rotating speed of high-speed rod finish to gauge sortie deflector roll is big
It is about per minute 30000~45000 turns.It is cooling roll and guide and guards, it is necessary to ceaselessly spray certain pressure to its surface
Cooling water.Due to carrying out Roll Collar Forced water cooling, Roll Collar is acted on by chilling and shock heating alternating thermal stress, is also easy to produce heat tired
Labor.Therefore, Roll Collar at relatively high temperatures, should bear rapid heat cycle impact, and sliding frictional wear and steel billet are born again
The shock loading applied during entrance, condition of work is very severe, when the heat spreader of Roll Collar is not smooth, easily causes Roll Collar
Loss even fail.Because the condition of work of deflector roll is very badly constantly clashed into, it is necessary to bear rolled piece, under high temperature, high speed
Rubbed for a long time with rolled piece, while the impact of alternation thermic load is still suffered from, thus the replacement frequency of roll is very high.Therefore, exist
During manufacture deflector roll, it is desirable to high temperature abrasion resistance higher, high rigidity, high tenacity, thermal fatigue resistance high and anti-stick rigidity high.
In the prior art, Roll Collar is mostly using heat resisting steel, the abrasion-resistant stee and height of martensitic structure of austenite structure
The materials such as chrome cast iron, hard alloy, high-alloy steel make deflector roll.Austenitic heat-resistance steel has good high-temperature stability and tough
Property, but wear no resistance, quick abrasion.And austenite and wire rod (being organized as ferrite or austenite) itself adhere to each other tendency
Property is larger, and steel bonding easily occurs.Martensitic structure abrasion-resistant stee and wear resistant cast iron have good wearability at room temperature, but with making
With the raising of temperature, martensite is tempered, and wearability can be reduced.Although rich chromium cast iron hardness is high, anti-wear performance is good, due to this
Plant steel hardness and wearability relies primarily on the carbide Cr7C3 and Cr23C6 of chromium, heat endurance is poor, typically more than 450 DEG C
Start agglomeration and gradually soften.Hard alloy deflector roll has good wearability and high-temperature stability, but because material is crisp
Property it is big, its impact flexibility is relatively low, is easily broken in the case where the high speed (more than 1000m/ s) for being rolled metal head is impacted, excellent height
Warm wearability is difficult to be played, and machinability is poor, and manufacturing cost is too high, is limited in the use of line deflector roll material high
System.Because metal hardness wearability at high temperature is low, and poor chemical stability under high temperature, therefore used in Roll Collar
High temperature wear failure, steel bonding failure occur in journey, the originals such as failure, heat fatigue and hot tearing mistake, Cracking Failure, steel bonding failure are pulled
Because of failure, the steel rolling accidents such as stifled steel are then caused to occur.Therefore, its cost how is reduced, its performance is improved, as future studies
Main contents and important problem.
With the development of high-speed rolling, requirement higher is proposed to guide and guard deflector roll material.Influence guide and guards uses the longevity
One of key issue of life is exactly the control of selection and the structural state of deflector roll material, huge deflector roll material consumption, continually
Change the normal development that deflector roll has had a strong impact on steel and iron industry.Therefore, the material to deflector roll is studied not only very necessary,
And have become expansion iron and steel output, improve one of witch's subject matters to be solved such as section quality.Therefore, domestic and international all one
Directly it is devoted to the research and development of new deflector roll material.
Steel bonded carbide（Hereinafter referred to as steel-bonded carbide）It is that, with steel as matrix, tungsten carbide, titanium carbide etc. are hard phase
The high life mould between hard alloy and alloy tool steel, mould steel and high-speed steel produced using powder metallurgy process
Material and engineering material.The ratio range of steel-bonded carbide steel matrix Binder Phase and hard phase quite it is extensive, this just determines that its has
Standby following excellent properties：1）Extensive processing performance, forgeability and machinable performance and can mainly be heat-treated
Property and weldability.2）Good physical and mechanical properties, is mainly manifested in the wearability suitable with high-cobalt hart metal；With steel phase
Compare rigidity high, elastic modelling quantity, bending strength and compression strength；The toughness higher compared with hard alloy；And it is good
Self lubricity and damping characteristic high etc..3）Excellent chemical stability, such as high temperature resistant, anti-oxidant, anti-various dielectric corrosions.
Due to the above-mentioned excellent combination property of steel-bonded carbide so that it is in tool die material, wear part, high temperature resistant and corrosion-resistant structure
The aspects such as part material more and more occupy consequence, and in intermetallic composite coating, hardware electronics, automobile, machinery, metallurgy, chemical industry, ship
It is used widely and obtains good result in the field such as oceangoing ship, Aero-Space and nuclear industry.Such as with alloy tool steel, mould steel and
High-speed steel is compared, and steel-bonded carbide can be such that die life number is increased substantially with ten times of ground, and economic benefit is also extremely notable.
Due to the advantage of the existing hard alloy high elastic modulus of steel bonded carbide, high rigidity and high-wearing feature, there is conjunction again
Golden tool steel machinable and the features such as can be heat-treated, significant Technological Economy effect has been obtained for cold-working tool die material
Really.About steel bonded carbide hot working mould applicable cases foreign countries also have been reported that, for example:The country such as U.S. has used steel knot
Hard alloy makes single groove or double flute roll of hot-rolled ribbed bars, and the Roll Collar as manufacture fast mill;And at me
The report of state's this respect is less.Being applied to manufacture Roll Collar will greatly improve the service life of Roll Collar, and reduction is led
Roller production and use cost are defended, the economic benefit of iron and steel enterprise is improved, while also having great social benefit.
The content of the invention
Good the invention provides a kind of wearability in order to solve defect of the prior art, non-breakable, low cost makes
With the high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collar and its manufacture method of long lifespan, to strengthen the resistance to of deflector roll
The service life of mill property, extension deflector roll, and reduce the manufacturing cost of deflector roll.
The present invention uses following technical scheme to solve technical problem.
High-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars of the invention, using high-boron low-alloy high-speed steel
Base WC40 steel bonded carbide is manufactured, and processing and manufacturing process includes following steps：
（1）Guide and guard roll material：
C0.2~0.6%, Cr5.0~7.0%, W2.5~3.0%, Mo1.5~3.0%, V1.5~2.5%, Nb0.5~1.0%,
Si0.3~1.0%, Mn0.3~1.0%, B1.4~2.5%, Cu0.3~1.0%, Ni0.8~2.0%, S≤0.02, P≤0.02,
CeO20.3~0.8%, WC40%, balance of Fe；
（2）The manufacture and processing of Roll Collar：
1) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide steel bonded carbide that powder metallurgical technique is manufactured is carried out
Forging molding；
2) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide steel bonded carbide of forging molding is carried out into spheroidizing
Treatment, makes steel bonded carbide hardness ＜ HRA74；
3) steel bonded carbide after spheroidizing is processed is processed according to the size needed for Roll Collar product, by Roll Collar
Certain stock removal is reserved at physical dimension and endoporus dress dress bearing；
4) the steel bonded carbide Roll Collar that will be processed is quenched and tempering heat treatment, makes its hardness ＞ HRA80；
5) grinding to institute will be carried out by quenching and the good steel bonded carbide Roll Collar appearance of tempering heat treatment and endoporus
Need size；
6) by the good steel bonded carbide Roll Collar of grinding carry out quality inspection it is qualified after in its surface and endoporus oiling, so
After pack.
Beneficial effect
Compared with the prior art, the present invention has the beneficial effect that：
1st, high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars of the invention, overcome austenitic heat-resistance steel wear-resisting
Property poor, quick abrasion, with wire rod adhere to each other tendency victory it is larger, easily occur steel bonding and martensitic structure abrasion-resistant stee and wear resistant cast iron
Be prone to martenaging martempering, wearability can be reduced and rich chromium cast iron heat endurance is poor, it is easy to agglomeration and gradually soften
With hard alloy deflector roll because material fragility is big, its impact flexibility is relatively low, is easily broken under HI high impact, and machinability
Difference, the too high shortcoming and defect of manufacturing cost.The advantage of existing hard alloy high elastic modulus, high rigidity and high-wearing feature, and
There is alloy tool steel machinable and can be heat-treated, with high temperature resistant, the characteristic of abrasion-resistant, greatly increase and lead
The performances such as wearability, high temperature resistant, the heat shock resistance of roller, extend the service life of deflector roll, and service life is generally traditional deflector roll
5~10 times, so as to reduce production cost, improve production efficiency and product quality.Greatly reduce being manufactured into for deflector roll
This.With great economic benefit and social benefit.
2nd, the high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collar prepared by the present invention is not only wear-resisting but also overcomes
The breakable shortcoming of hard alloy, wear-resistant, the excellent physical and mechanical properties such as resistance to high temperature oxidation high with hardness, and system
Make method easy, it is easy to operate, it is with low cost, there is high cost performance.
Brief description of the drawings
Fig. 1 is the sectional view of high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars of the invention.
Label in accompanying drawing 1：1 bearing mounting hole, 2 deflector roll shaft through-holes, 3 guide and guard roll bodies, 4 bearings install limited step.
Below by way of specific embodiment, and the invention will be further described with reference to accompanying drawing.
Specific embodiment
Referring to Fig. 1, high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars, by 1 bearing mounting hole, 2 deflector rolls
Shaft through-hole, 3 guide and guard roll bodies, 4 bearings are installed limited step and are constituted.
Further illustrated with reference to specific embodiment.Protection scope of the present invention is not only limited to following content
Statement.
Embodiment 1
The processing and manufacturing process of high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars of the invention generally comprise with
Under several steps：
（1）Guide and guard roll material：
Material chemical composition mass percent be C0.3%, Cr5.03%, W2.5%, Mo1.8%, V1.5%, Nb0.5%, Si0.3%,
Mn0.3%, B1.4%, Cu0.30%, Ni0.80%, S≤0.02, P≤0.02, CeO20.3%, WC40%, balance of Fe；
（2）The manufacture and processing of Roll Collar：
1) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide that powder metallurgical technique is manufactured is carried out into forging molding；
2) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide of forging molding is carried out into spheroidizing treatment, makes steel knot hard
Matter alloy rigidity ＜ HRA74；
3) steel bonded carbide after spheroidizing is processed is processed according to the size needed for Roll Collar product, by Roll Collar
Certain stock removal is reserved at physical dimension and endoporus dress dress bearing；
4) the steel bonded carbide Roll Collar that will be processed is quenched and tempering heat treatment, makes its hardness ＞ HRA80；
5) grinding to institute will be carried out by quenching and the good steel bonded carbide Roll Collar appearance of tempering heat treatment and endoporus
Need size；
6) by the good steel bonded carbide Roll Collar of grinding carry out quality inspection it is qualified after in its surface and endoporus oiling, so
After pack.
Instant invention overcomes the deficiency of single material in the prior art, hard alloy wear resistance, common iron are given full play to not
Breakable strong point, the two is combined, and produces steel bonded carbide deflector roll.
It is to be understood that above with respect to specific descriptions of the invention, being merely to illustrate the present invention and being not limited to this
Technical scheme described by inventive embodiments, it will be understood by those within the art that, still the present invention can be carried out
Modification or equivalent, to reach identical technique effect；As long as satisfaction use needs, all protection scope of the present invention it
It is interior.
Embodiment 2
The processing and manufacturing process of high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars of the invention generally comprise with
Under several steps：
（1）Guide and guard roll material：
Material chemical composition mass percent be C0.6%, Cr7.0%, W3.0%, Mo3.0%, V2.5%, Nb1.0%, Si1.0%,
Mn1.0%, B2.5%, Cu1.0%, Ni2.0%, S≤0.02, P≤0.02, CeO2 0.8%, WC50%, balance of Fe；
（2）The manufacture and processing of Roll Collar：
1) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide that powder metallurgical technique is manufactured is carried out into forging molding；
2) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide of forging molding is carried out into spheroidizing treatment, makes steel knot hard
Matter alloy rigidity ＜ HRA74；
3) steel bonded carbide after spheroidizing is processed is processed according to the size needed for Roll Collar product, by Roll Collar
Certain stock removal is reserved at physical dimension and endoporus dress dress bearing；
4) the steel bonded carbide Roll Collar that will be processed is quenched and tempering heat treatment, makes its hardness ＞ HRA80；
5) grinding to institute will be carried out by quenching and the good steel bonded carbide Roll Collar appearance of tempering heat treatment and endoporus
Need size；
6) by the good steel bonded carbide Roll Collar of grinding carry out quality inspection it is qualified after in its surface and endoporus oiling, so
After pack.
Instant invention overcomes the deficiency of single material in the prior art, hard alloy wear resistance, common iron are given full play to not
Breakable strong point, the two is combined, and produces steel bonded carbide deflector roll.
It is to be understood that above with respect to specific descriptions of the invention, being merely to illustrate the present invention and being not limited to this
Technical scheme described by inventive embodiments, it will be understood by those within the art that, still the present invention can be carried out
Modification or equivalent, to reach identical technique effect；As long as satisfaction use needs, all protection scope of the present invention it
It is interior.
Claims (2)
1. a kind of high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars, it is characterised in that use the low conjunction of boron high
Golden high-speed steel-base WC40 steel bonded carbide manufacture.
2. the manufacture method of the high-boron low-alloy high-speed steel base WC40 steel bonded carbide Roll Collars according to claim 1,
Characterized in that, processing and manufacturing process includes following steps：
（1）Guide and guard roll material：
Material therefor chemical composition mass percent be C0.2~0.6%, Cr5.0~7.0%, W2.5~3.0%, Mo1.5~
3.0%, V1.5~2.5%, Nb0.5~1.0%, Si0.3~1.0%, Mn0.3~1.0%, B1.4~2.5%, Cu0.3~1.0%,
Ni0.8~2.0%, S≤0.02, P≤0.02, CeO20.3~0.8%, WC40%, balance of Fe；
（2）The manufacture and processing of Roll Collar：
1) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide that powder metallurgical technique is manufactured is carried out into forging molding；
2) the high-boron low-alloy high-speed steel base WC40 steel bonded carbide of forging molding is carried out into spheroidizing treatment, makes steel knot hard
Matter alloy rigidity ＜ HRA74；
3) steel bonded carbide after spheroidizing is processed is processed according to the size needed for Roll Collar product, by Roll Collar
Certain stock removal is reserved at physical dimension and endoporus dress dress bearing；
4) the steel bonded carbide Roll Collar that will be processed is quenched and tempering heat treatment, makes its hardness ＞ HRA80；
5) grinding to institute will be carried out by quenching and the good steel bonded carbide Roll Collar appearance of tempering heat treatment and endoporus
Need size；
6) by the good steel bonded carbide Roll Collar of grinding carry out quality inspection it is qualified after in its surface and endoporus oiling, so
After pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125508.8A CN106694583A (en) | 2017-03-04 | 2017-03-04 | High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710125508.8A CN106694583A (en) | 2017-03-04 | 2017-03-04 | High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
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| CN106694583A true CN106694583A (en) | 2017-05-24 |
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ID=58912104
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|---|---|---|---|
| CN201710125508.8A Pending CN106694583A (en) | 2017-03-04 | 2017-03-04 | High-boron low-alloy high-speed steel base WC40 steel-bonded hard alloy guide and guard roller and manufacturing method thereof |
Country Status (1)
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| CN (1) | CN106694583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686783A (en) * | 2022-03-16 | 2022-07-01 | 长沙市萨普新材料有限公司 | High-elasticity-modulus age-hardening high-speed steel material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174967A (en) * | 1978-01-27 | 1979-11-20 | Chromalloy American Corporation | Titanium carbide tool steel composition for hot-work application |
| CN104328322A (en) * | 2014-11-28 | 2015-02-04 | 株洲硬质合金集团有限公司 | Heat-resistant steel structure hard alloy and preparation method thereof |
| CN106180593A (en) * | 2016-08-19 | 2016-12-07 | 合肥东方节能科技股份有限公司 | A kind of Roll Collar manufacture method based on WC hard alloy |
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2017
- 2017-03-04 CN CN201710125508.8A patent/CN106694583A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174967A (en) * | 1978-01-27 | 1979-11-20 | Chromalloy American Corporation | Titanium carbide tool steel composition for hot-work application |
| CN104328322A (en) * | 2014-11-28 | 2015-02-04 | 株洲硬质合金集团有限公司 | Heat-resistant steel structure hard alloy and preparation method thereof |
| CN106180593A (en) * | 2016-08-19 | 2016-12-07 | 合肥东方节能科技股份有限公司 | A kind of Roll Collar manufacture method based on WC hard alloy |
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| 万振海等: "DT碳化钨钢结硬质合金显微组织结构的研究", 《粉末冶金技术》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686783A (en) * | 2022-03-16 | 2022-07-01 | 长沙市萨普新材料有限公司 | High-elasticity-modulus age-hardening high-speed steel material and preparation method thereof |
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