CN109797393A - A kind of steel copper composite abrasion resistance material for laser manufacture rolling mill screwdown nut - Google Patents
A kind of steel copper composite abrasion resistance material for laser manufacture rolling mill screwdown nut Download PDFInfo
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- CN109797393A CN109797393A CN201910088504.6A CN201910088504A CN109797393A CN 109797393 A CN109797393 A CN 109797393A CN 201910088504 A CN201910088504 A CN 201910088504A CN 109797393 A CN109797393 A CN 109797393A
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- rolling mill
- laser
- nut
- mill screwdown
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Abstract
The present invention discloses a kind of steel copper composite abrasion resistance material for laser manufacture rolling mill screwdown nut, the characteristics of alloy material, is using brass as base, Al, Mn, Fe, Ni element is added simultaneously, which is grouped as by following mass percent group: Zn 10-47%, AL 2-9%, Mn 2-5%, Fe 1-5%, Ni 1-5%, Cu surplus.The present invention is matched by optimization design alloy material and laser cladding technological parameter, the High-strength abrasion-resistant alloy material is set to manufacture a kind of and substrate metallurgical bonding high strength copper alloy cladding layer on steel material substrate by laser melting and coating technique, its toughness, corrosion resistance, antiwear property meet the use demand of rolling mill screwdown nut, and production cost is minimized, service life is improved.
Description
Technical field
The present invention relates to a kind of metallurgical equipment component steel copper composite manufacturing high-strength abrasion-proof layers, and concern is used for laser system emphatically
The steel copper composite abrasion resistance material for making rolling mill screwdown nut, belongs to laser melting and coating technique field.
Background technique
Rolling mill screw down is one of milling train important feature, for adjusting roll gap, also referred to as roll-separating mechanism.Pressure dress
It sets and is divided into manual depression, Electro-pressing and three kinds of hydraulic pressing by the kind of drive.Wherein electric screw down gear is rolled suitable for slab
Machine, cut deal steel mill etc. require the situation that roll gap adjusting range is big, pressing speed is fast, mainly by housing screw, nut and its
Transmission mechanism composition.
In the roughing mill screwdown gear of heavy and medium plate mill and hot-strip rolling line, screw box and down screw rod are very
Important component, during rolling, the adjustment each time of roll gap is completed by screw box and down screw rod.In addition,
Huge press power is also to be transmitted in rack by them.
Frequently, operating condition is severe for the work of rolling mill screwdown device, and core component screw box uses high-strength casting copper nut, valence
Lattice are expensive and remove that replacement is difficult, and most power is finally undertaken by copper nut, copper nut main failure shape under normal circumstances
Formula is wear-out failure, and abrasion post gap is excessive, and the failure of screw box not only has a direct impact the service life of nut itself, even
The working efficiency of screw-down can be also reduced, increases energy consumption, aggravates the impact endurance test shock of milling train, reduce the reliability of milling train.
The screw box of steel copper composite manufacturing has the advantages that at low cost, intensity is high, and wearability is good, service precision is high, tool
There is extensive market development prospect.
In recent years, laser melting coating has obtained rapid popularization and extensive use as a kind of emerging industrial technology.Laser
It is a kind of process for modifying surface that melting and coating technique, which belongs to, makes cladding layer by high energy laser beam under conditions of not influencing substrate material
Metallurgical bonding is realized with matrix.Compared with routine casting screw box, has and do not limited by conventional casting, not by metal material
Expect type limitation, no macrosegregation and tissue it is more tiny, better than at present casting state tissue many advantages, such as.
Rolling mill screwdown nut working condition is complicated, has very high requirement to the performance of cladding layer, needs good wearability
While also need to have high-intensitive, high tenacity；Additionally need high temperature, heavy duty, HI high impact and poor lubrication to be overcome etc. severe
Working condition.Currently, not having the alloy powder that can be directly used for carrying out laser melting coating manufacture rolling mill screwdown nut in the market
Material, individual powder are unable to reach desired effect, need to add other alloys in existing powder, powder is made to become polynary
Alloy powder, to improve hardness and wearability.
Summary of the invention
It is above-mentioned it is an object of the invention to solve the problems, such as, by repetition test, develops and a kind of meet milling train pressure
The High-strength abrasion-resistant alloy material of lower nut duty requirements, the High-strength abrasion-resistant alloy material can be existed by laser melting and coating technique
A kind of and substrate metallurgical bonding high strength copper alloy cladding layer is manufactured on steel material substrate, meets the use of rolling mill screwdown nut
Demand.
The technical solution that the present invention provides is.
A kind of steel copper composite abrasion resistance material for laser manufacture rolling mill screwdown nut, is grouped by following mass percent group
At: Zn 10-47%, AL 2-9%, Mn 2-5%, Fe 1-5%, Ni 1-5%, Cu surplus.
The characteristics of alloy powder, is using brass as base, while Al, Mn, Fe, Ni element is added.Wherein, Al element
Addition can be reduced significantly alpha phase zone, improve alloy strength and hardness, corrosion resistance be improved, when Al content increases, although conjunction can be improved
The intensity and hardness of gold, but material moulding performance can be reduced when Al content is more than 9%；Mn element can not only reduce alpha phase zone
Element, also have a solution strengthening effect to brass, the increase of content can greatly improve brass and steam to seawater, chloride and overheat
The corrosion resistance of vapour, but the additional amount of Mn element need to be controlled in 2-5%, otherwise can be added to subsequent machine and be brought minimal effect；Ni
Element is to make the widened element in alpha phase zone, and nickel is added into brass, can improve the intensity, toughness and stress corrosion dehiscence resistant of brass
Ability；Individually add a certain element, element additive amount is limited, Fe element energy thinning microstructure and inhibits recrystal grain long
Greatly, the mechanical property of alloy is improved, when individually adding Fe element into brass, content is usually no more than 1.5%, otherwise excessive
Fe element has Fe-riched phase segregation, drops low-alloyed corrosion resistance and surface treatment properties, but multiple element adds together, element
Between interact, coordinate mutually, intensity, hardness and moulding that is corrosion proof while ensure that material, therefore Fe member be turned up
Element can be added to 5%, cooperate with Zn, Al, Mn, Ni element, not only guaranteed the structure refinement of alloy material but also energy comprehensive adjustment material
The intensity hardness of material and moulding.
A kind of method of laser melting coating manufacture rolling mill screwdown nut, specifically includes following steps.
(1) substrate surface is cleared up: the grease of substrate surface, iron rust are cleaned out.
(2) Cu-base powder is dried: spare after drying by copper-base alloy powder in 200 DEG C of heat preservation 2h.
(3) laser melting coating: using 3kw optical fiber laser, carries out laser melting coating on steel substrate surface, technological parameter is:
2500 ~ 3000W of power, spot diameter 3.6mm, scanning speed: 500 ~ 1000mm/min, overlapping rate: 40 ~ 70%, powder feed rate:
20~30g/min。
(4) it is machined: being machined after cladding, carry out online test after detection meets the requirements.
What the present invention prepared is used for rolling mill screwdown nut laser steel copper composite abrasion resistance material intensity with higher, anti-corruption
Erosion, anti abrasive performance, are specifically applied to rolling mill screwdown nut.By the addition of Al, Mn, Fe, Ni alloying element, improves copper and close
It is fast under HI high impact, high pressure to meet rolling mill screwdown nut to improve the intensity of steel copper composite manufacturing copper nut for golden powder property
Use under degree improves screw box service life.
Compared with prior art, the beneficial effects of the present invention are.
Compared with existing monoblock cast rolling mill screwdown nut, steel copper composite manufacturing rolling mill screwdown nut has following excellent
Gesture.
(1) steel copper composite manufacturing rolling mill screwdown nut, substantially reduces the dosage of copper alloy, to significantly reduce former material
The production cost of material.
(2) addition of Fe element can not only reduce cost, additionally it is possible to improve the mechanical property of alloy, and guarantee alloy material
The moulding of material.
(3) method of laser melting coating can effectively avoid that the existing segregation of casting process is serious, is mingled with shortcoming and riser
The problems such as shrinkage porosite.
(4) due to laser rapid heat cycle the characteristics of, makes the microstructure more fine uniform of cladding layer, hard phase disperse point
Cloth, wearability increase；Cooperate wear-resistant material of the invention, dramatically increases the online service life of screw box.
Specific embodiment
Embodiment 1.
With 3kw optical fiber laser, it is molten to carry out laser to base steel screw box substrate for R & D design wear-resistant copper-based alloy powder
It covers.The ingredient of steel copper composite manufacturing wear-resistant material are as follows: Zn:23%, AL:6%, Mn:2%, Fe:3%, Ni:1%, surplus Cu.First
Substrate surface is cleared up, the grease of substrate surface, iron rust are cleaned out with acetone；Multi-element alloy copper based powders are carried out at drying
Reason, 200 DEG C of heat preservation 2h.Cladding condition uses melting and coating process parameter after having: power 2500w, scanning speed 800mm/min take
Rate 40% is connect, synchronous powder feeding system 21g/min carries out laser melting coating.Single layer cladding carries out multilayer cladding, the number of clad layers with a thickness of 1.2mm
It is 17 layers, hardness is 180HBW after cladding.The steel copper composite rolling mill screw box of laser melting coating preparation, Laser Cladding Quality are good
It is good, it is machined after cladding, carries out online test after detection meets the requirements, after online test, rolling mill screwdown nut
Wearability increases, and improves about 10% using the time, increases the continuity of operation, and the copper nut of steel copper composite manufacturing and casting
Copper nut is compared, and production cost saves 20%, and service life extends about 10%, and service life is long, increases the economic effect of steel mill
Benefit.
Embodiment 2.
With 3kw optical fiber laser, it is molten to carry out laser to base steel screw box substrate for R & D design wear-resistant copper-based alloy powder
It covers.The ingredient of wear-resistant copper-based alloy dusty material is Zn:34%, AL:2%, Mn:3%, Fe:2%, Ni:1%, surplus Cu.First
Substrate surface is cleared up, the grease of substrate surface, iron rust are cleaned out with acetone；Multi-element alloy copper based powders are carried out at drying
Reason, 200 DEG C of heat preservation 2h.Cladding condition uses melting and coating process parameter after having: power 2700w, scanning speed 1000mm/min take
Rate 50% is connect, synchronous powder feeding system 23g/min carries out laser melting coating.Single layer cladding carries out multilayer cladding, the number of clad layers with a thickness of 1.2mm
It is 17 layers, hardness is 120HBW after cladding.The steel copper composite rolling mill screw box of laser melting coating preparation, Laser Cladding Quality are good
It is good, it is machined after cladding, carries out online test after detection meets the requirements.
Claims (2)
1. a kind of steel copper composite abrasion resistance material for laser manufacture rolling mill screwdown nut, is grouped by following mass percent group
At: Zn 10-47%, AL 2-9%, Mn 2-5%, Fe 1-5%, Ni 1-5%, Cu surplus.
2. a kind of method of laser melting coating manufacture rolling mill screwdown nut, specifically includes the following steps:
(1) substrate surface is cleared up: the grease of substrate surface, iron rust are cleaned out；
(2) Cu-base powder is dried: spare after drying by copper-base alloy powder in 200 DEG C of heat preservation 2h；
(3) laser melting coating: using 3kw optical fiber laser, carries out laser melting coating on steel substrate surface, technological parameter is: power
2500 ~ 3000W, spot diameter 3.6mm, scanning speed: 500 ~ 1000mm/min, overlapping rate: 40 ~ 70%, powder feed rate: 20 ~
30g/min；Carry out multilayer cladding；
(4) it is machined: being machined after cladding, carry out online test after detection meets the requirements.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088504.6A CN109797393B (en) | 2019-01-30 | 2019-01-30 | Steel-copper composite wear-resistant material for manufacturing screw down nut of rolling mill by laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088504.6A CN109797393B (en) | 2019-01-30 | 2019-01-30 | Steel-copper composite wear-resistant material for manufacturing screw down nut of rolling mill by laser |
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| CN109797393A true CN109797393A (en) | 2019-05-24 |
| CN109797393B CN109797393B (en) | 2021-02-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144490A (en) * | 2019-06-21 | 2019-08-20 | 燕山大学 | A kind of compound copper bush of base steel and preparation method thereof |
| CN113275847A (en) * | 2021-05-27 | 2021-08-20 | 中国科学院工程热物理研究所 | Marine propeller and multi-alloy composite manufacturing method thereof |
| CN113322457A (en) * | 2021-05-13 | 2021-08-31 | 宁波大学 | High-wear-resistance pressing nut with gradient coating and preparation method thereof |
| CN114289703A (en) * | 2021-12-30 | 2022-04-08 | 山东理工大学 | Casting method of steel-based surface composite high-strength super wear-resistant copper alloy, composite alloy and application thereof |
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| CN1594622A (en) * | 2004-07-05 | 2005-03-16 | 四川莱特新材料科技有限责任公司 | High-strength wear-resistant complex aluminum brass |
| CN100469924C (en) * | 2007-05-16 | 2009-03-18 | 赵景财 | Highly-abrasive copper alloy nut |
| CN102400009A (en) * | 2011-11-15 | 2012-04-04 | 广东华金合金材料实业有限公司 | High-strength wear resistant aluminium yellow brass |
| CN108315733A (en) * | 2018-02-26 | 2018-07-24 | 沈阳工业大学 | Powder and preparation method used in a kind of laser melting coating aluminium bronze gradient coating |
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2019
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| JPS63238247A (en) * | 1987-03-25 | 1988-10-04 | Mitsubishi Metal Corp | Synchronous ring for transmission made of Cu alloy |
| CN1594622A (en) * | 2004-07-05 | 2005-03-16 | 四川莱特新材料科技有限责任公司 | High-strength wear-resistant complex aluminum brass |
| CN100469924C (en) * | 2007-05-16 | 2009-03-18 | 赵景财 | Highly-abrasive copper alloy nut |
| CN102400009A (en) * | 2011-11-15 | 2012-04-04 | 广东华金合金材料实业有限公司 | High-strength wear resistant aluminium yellow brass |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110144490A (en) * | 2019-06-21 | 2019-08-20 | 燕山大学 | A kind of compound copper bush of base steel and preparation method thereof |
| CN113322457A (en) * | 2021-05-13 | 2021-08-31 | 宁波大学 | High-wear-resistance pressing nut with gradient coating and preparation method thereof |
| CN113322457B (en) * | 2021-05-13 | 2023-03-03 | 宁波大学 | High-wear-resistance pressing nut with gradient coating and preparation method thereof |
| CN113275847A (en) * | 2021-05-27 | 2021-08-20 | 中国科学院工程热物理研究所 | Marine propeller and multi-alloy composite manufacturing method thereof |
| CN114289703A (en) * | 2021-12-30 | 2022-04-08 | 山东理工大学 | Casting method of steel-based surface composite high-strength super wear-resistant copper alloy, composite alloy and application thereof |
| CN114289703B (en) * | 2021-12-30 | 2024-02-20 | 山东理工大学 | Casting method of steel-based surface composite high-strength super wear-resistant copper alloy, composite alloy and application thereof |
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| CN109797393B (en) | 2021-02-09 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190524 Assignee: SHENYANG DALU LASER FLEXIBLE MANUFACTURE TECHNOLOGY Co.,Ltd. Assignor: SHENYANG DALU LASER ENGINEERING CO.,LTD. Contract record no.: X2023210000125 Denomination of invention: A Steel Copper Composite Wear-resistant Material for Laser Manufacturing of Rolling Mill Screwdown Nuts Granted publication date: 20210209 License type: Common License Record date: 20230921 |
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