CN101338428A - Strengthen process for pick head by laser fusing and coating wear-resistant coating - Google Patents

Strengthen process for pick head by laser fusing and coating wear-resistant coating Download PDF

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Publication number
CN101338428A
CN101338428A CN 200810012681 CN200810012681A CN101338428A CN 101338428 A CN101338428 A CN 101338428A CN 200810012681 CN200810012681 CN 200810012681 CN 200810012681 A CN200810012681 A CN 200810012681A CN 101338428 A CN101338428 A CN 101338428A
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pick
laser
head
coating
powder
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CN 200810012681
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Chinese (zh)
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廖运生
陶兴启
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沈阳大陆激光成套设备有限公司
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Publication of CN101338428A publication Critical patent/CN101338428A/en

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Abstract

A hardening process of the laser cladding wear-resisting anticorrosive coating of a pick-shaped cutting pick head comprises procedures as follows: the surface of the pick-shaped cutting pick head is pretreated; then alloying powder is selected and an automatic powder feeder is adjusted; and finally the pick-shaped cutting head is coated with laser cladding wear-resisting anticorrosive alloy coating. The hardening process has advantages and characteristics that the hardening process can be finished directly on a shaped cutting pick without subsequent handling and heating-up; and a finished product can be obtained after laser processing. The hardening process has simple technique, controllable cost, evident hardening effect and longer service life that is 3 to 4 times longer than a former matrix. Only the cutting pick head is processed, so the deformation of a cutting pick body and het affect are extremely little.

Description

镐形截齿齿体头部激光熔覆耐磨涂层强化工艺 Conical bits teeth laser cladding head body reinforced abrasion resistant coating process

技术领域 FIELD

本发明属于激光熔覆技术领域,特别涉及镐形截齿齿体头部表面激光烙覆制备耐磨合金涂层的工艺。 The present invention belongs to the technical field of laser cladding, in particular, relates to the cross-sectional surface of the laser pick-shaped tooth body head baked coating abrasion resistant alloy coating preparation process. 背景技术 Background technique

镐形截齿是掘进及采掘机械的重要消耗件,广泛应用于煤炭、钢铁、有色及其它矿业开采,隧道及地铁等工程掘进。 Conical bits consumption is an important piece of tunneling and mining machinery, widely used in coal, iron and steel, nonferrous metals and other mining, tunnels and subway and other projects tunneling. 截齿的耐磨性和寿命直接决定了矿山开采和掘进工程的作业效率。 Pick wear resistance and life will determine the operating efficiency of the mining and tunneling projects. 由于恶劣的工作条件,在掘进中由于齿体头部严重磨损导致硬质合金齿尖脱落是截齿的主要失效方式。 Due to poor working conditions in tunneling due to severe wear head gear tooth form tooth carbide tip off led to a major failure mode pick.

因此,显著增强齿体头部的耐磨性是制造高性能长寿命截齿的有效途径。 Thus, significantly enhance the abrasion resistance of the tooth head of the body is an effective way to produce high performance and long life of the cutting pick.

目前已有采用等离子熔覆方法在齿体头部熔覆一层耐磨合金的方法增强截齿耐磨性,但等离子熔覆方法存在热影响区大、熔覆缺陷不易控制、钎焊区由于钎焊材料熔点低易引起焊接脱落等缺点。 At present, a method using plasma cladding tooth head body a wear resistant alloy cladding method of enhancing the wear resistance of the cutting bit, but other methods exist plasma cladding large heat affected zone, cladding defect difficult to control, since the brazing zone a low melting point brazing material can lead to disadvantages like welding off. 也有在齿体头部采用镶嵌硬质合金条强化齿体头部,但存在着硬质合金条在使用过程中易于脱落及制造成本过高的缺点。 There is also embedded carbide tooth element head of reinforcing tooth element head, but there is a drawback in the course of high manufacturing costs and easily fall carbide article. 上述缺点均限制了其广泛应用。 The above-mentioned disadvantages have limited its widespread use. 发明内容 SUMMARY

针对上述技术存在的问题,本发明提供一种截齿头部激光熔覆耐磨涂层强化工艺。 For the presence of the above technical problems, the present invention provides a laser cladding head picks abrasion resistant coating hardening process. 该工艺采用高功率激光设备和同步自动送粉装置,在高功率激光束辐照截齿头部表面形成激光熔池的同时将耐磨合金粉末材料同步送入熔池,激光束移开后熔池快速凝固形成激光熔覆耐磨合金层。 The process uses a high power laser device and a synchronous automatic powder feeding apparatus while forming a molten pool in the high power laser head surface irradiated laser beam pick resistant alloy powder material is clocked into the second bath, the laser beam melting away rapid solidification pool formed by laser cladding resistant alloys.

采用的技术方案是: The adopted technical proposal is:

镐形截齿齿体头部激光熔覆耐磨涂层强化工艺,其特征在于包括以下工艺过程: Conical bits tooth head body strengthening process of laser cladding a wear resistant coating, characterized by comprising the following processes:

(1) 截齿齿体头部表面预处理室温下对截齿表面进行除油除锈,并用酒精清洗干净。 (1) tooth surface for rust removal under the cut surface of the head temperature pretreatment truncated tooth body, and cleaned with alcohol.

(2) 合金粉末的选择和自动送粉装置的调整根据截齿工作条件及掘进对象硬度情况,选用合适的铁基、镍基或金属陶 (2) automatic selection of the alloy powder and the powder feeding apparatus according to adjust the working conditions and the pick of the object hardness tunneling, the choice of a suitable iron-based, nickel-based or cermet

瓷合金粉末,调节自动送粉装置送粉速率,以满足涂层厚度所需送粉速率。 Porcelain alloy powder, powder feeder automatically adjusted feed rate to meet the desired coating thickness feed rate. 所述的自动送分装置在再先专利申请文件中已经公开,申请号为:200720013899.6 The automatic feeding devices have been disclosed in the re-division prior patent application, the application number: 200720013899.6

专利名称为《多料仓送粉器》。 And entitled "Multi-powder feeder bin."

(3)截齿头部激光熔覆耐磨合金涂层 (3) picks laser cladding head wear-resistant alloy coating

选用气体C02激光器,工作台为数控激光加工机床,聚焦激光头沿截齿轴向进给,同时截齿旋转,自动送粉装置送粉头同步将耐磨合金粉末送入激光熔池,在截齿头部表面形成激光熔覆耐磨合金涂层,合金涂层厚度为l一1.5mm。 Selection C02 gas laser, a table for the CNC laser processing machine, the laser focusing head along the pick feed axis, while rotating the pick, the automatic powder feeding apparatus the powder feeding header synchronization resistant alloy powder into the molten pool, the truncated laser cladding head tooth surface wear-resistant alloy coating alloy coating having a thickness of l-1.5mm.

熔覆工艺参数如下: Cladding parameters are as follows:

激光功率P=3500〜4500W Laser power P = 3500~4500W

光斑直径D=2.5〜3.5mm Spot diameter D = 2.5~3.5mm

扫描速度V=500〜1500mm/min Scan speed V = 500~1500mm / min

搭接率40〜50% Lap rate 40~50%

本发明的原理是:采用具有高硬度和耐磨性的与截齿基体具有良好冶金与力学相关性的铁基、镍基合金或金属陶瓷合金粉末,在高功率激光光束照射截齿头部形成激光熔池的同时,采用自动送粉装置同步向熔池送入上述合金粉末, 合金粉末在熔池内发生快速熔化和凝固,形成均匀致密的高硬度和耐磨性熔覆 The principles of the present invention are: having a high hardness and wear resistance of iron-based correlation, nickel-based alloy or cermet alloy powder having good pick-yl metallurgical and mechanical, are formed in the high-power laser beam irradiation head picks while a laser weld pool automatic powder feeding apparatus is clocked into the molten pool of the alloy powder, the alloy powder in the bath occurs rapid melting and solidification, to form a uniform dense cladding of high hardness and wear resistance

层,熔覆层与齿体形成牢固的冶金结合。 Layer, a cladding layer formed with the teeth of a strong metallurgical bond. 熔覆层硬度可达HRC55以上,熔覆层厚度在l-1.5mm,硬度、厚度等均匀分布。 HRC55 hardness up above the cladding layer, the cladding layer thickness is evenly distributed l-1.5mm, hardness, thickness and the like. 本发明技术具有以下优点和特点: The techniques of this invention has the following advantages and features:

1、 制造在成型的截齿上直接完成,不增加后续工序,无须加热,激光处理完成后即为成品。 1, for producing molded done directly on the pick, without increasing the subsequent step, without heating, after the completion of laser processing is finished. 工艺简洁,成本可控。 The process is simple and cost control.

2、 效果显著,较原基体寿命提高3-4倍。 2, the effect is significant, improving the life of 3-4 times higher than the original substrate.

3、 齿体头部处理,齿体变形及热影响极小。 3, the head body treated teeth, teeth with minimal impact and thermal deformation. 具体实施方式 Detailed ways

实施例 Example

镐形截齿齿体头部激光熔覆耐磨涂层强化工艺,包括以下工艺过程: Conical bits teeth laser cladding a wear resistant coating head body strengthening process, the process comprising:

(1) 截齿齿体头部表面预处理室温下对截齿表面进行除油除锈,并用酒精清洗干净。 (1) tooth surface for rust removal under the cut surface of the head temperature pretreatment truncated tooth body, and cleaned with alcohol.

(2) 合金粉末的选择和自动送粉装置的调整根据截齿工作条件及掘进对象硬度情况,选用最合适的合金粉末,调节自 (2) automatic selection of the alloy powder and the powder feeding apparatus according to adjust the working conditions and the pick of the object hardness tunneling cases, choose the most suitable alloy powder, self-regulating

动送粉装置送粉速率,以满足涂层厚度所需送粉速率。 Powder feed means movable feed rate, in order to meet the desired coating thickness feed rate. 自动送粉装置为已知技术;铁基、镍基或陶瓷合金粉末均为己知技术,本实施例选用铁基合金粉末, 所述的铁基合金粉末中含有Fe、 C、 Cr、 Ni、 Mo、 Si、 N、 Nb、 Ta、 B;其化学成份按重量百分比为:C为0.8%、 Cr为16%、 Ni为3°/。 Automatic powder feeding apparatus of the known art; iron-based, nickel-based alloy, or a ceramic powder are known art, the embodiment chosen iron-based alloy powder, the iron-based alloy powder contains Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B; its chemical composition by weight percent: C is 0.8%, Cr of 16%, Ni of 3 ° /. 、 Mo为1%、 Si为1%、N为0.3%、 Nb为0.4%、 Ta为0.3%、 B为0.3%,余量为Fe。 , Mo was 1%, Si of 1%, N 0.3% of Nb is 0.4%, Ta 0.3%, 0.3% B, the balance is Fe.

合金粉末的配制方法: Alloy powder preparation methods:

将Fe、 C、 Cr、 Ni、 Mo、 Si、 N、 Nb、 Ta、 B按上述重量百分比提取后放入中频感应炉内,在氩气气氛下加热到1450—1550'C,使粉末完全融化并混合均匀,将熔融的金属液流注入水雾化设备的漏包坩埚,在漏包坩埚的下方置有水雾化喷嘴,当熔融的金属液流通过导流嘴流经喷嘴时,被喷嘴射出的高速水流击碎成小液滴、随后合金液滴落在水中凝固成粉末。 The Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B after the above-described weight percentages extracted into frequency induction furnace and heated to 1450-1550'C under argon atmosphere, the powder is completely melted and uniformly mixed, injected into the molten metal stream packet crucible drain water atomization device, placed below the drain bag crucible water atomizing nozzle when the molten metal flowing through the nozzle flow through the pouring, the nozzle is the high-speed stream emitted crushed into small droplets, the water then falls alloy droplets solidified into a powder. (3)截齿头部激光熔覆耐磨合金涂层 (3) picks laser cladding head wear-resistant alloy coating

选用气体C02激光器,工作台为数控激光加工机床,聚焦激光熔覆头沿截齿轴向进给,截齿按一定速度旋转,自动送粉装置送粉头同步将耐磨合金粉末送入激光熔池,在截齿头部表面形成激光熔覆耐磨合金涂层,合金涂层厚度为1.25mm。 Selection C02 gas laser processing machine table as CNC laser focused laser cladding head picks axial feed direction, at a constant speed rotation of the pick, the automatic powder feeding apparatus the powder feeding header into the synchronization alloy powder by laser melting pool, the teeth formed on the head surface of the truncated laser cladding wear-resistant alloy coating alloy coating having a thickness of 1.25mm.

熔覆工艺参数如下: Cladding parameters are as follows:

激光功率P=4000W; Laser power P = 4000W;

光斑直径D二3mm; Two 3mm spot diameter D;

扫描速度V=1000mm/min; Scan speed V = 1000mm / min;

搭接率45%。 Lap 45%.

Claims (1)

1、镐形截齿齿体头部激光熔覆耐磨涂层强化工艺,其特征在于包括以下工艺过程: 1)截齿齿体头部表面预处理室温下对截齿表面进行除油除锈,并用酒精清洗干净; 2)合金粉末的选择和自动送粉装置的调整根据截齿工作条件及掘进对象硬度情况,选用合适的铁基、镍基或金属陶瓷合金粉末,调节自动送粉装置送粉速率,以满足涂层厚度所需送粉速率;所述的铁基合金粉末的成份中主要含有Fe、C、Cr、Ni、Mo、Si、N、Nb、Ta、B;所述的镍基合金粉末中主要含有Ni、Cr、Mo、W、Co、V、Fe、Si、Mn及稀土元素Y2O3、La2O3、Ce和Hf中的至少两种;所述的金属陶瓷合金粉末是由碳化硼、碳化钨、碳化钛、碳化铬混合均匀配制而成; 3)截齿头部激光熔覆耐磨合金涂层选用气体CO2激光器,工作台为数控激光加工机床,聚焦激光头沿截齿轴向进给,同时截齿旋转,自动送粉 1, teeth conical bits laser cladding a wear resistant coating head body strengthening process, characterized by comprising the following processes: 1) the cross-sectional surface of teeth and rust removal pretreatment lower surface of the head body temperature truncated teeth , and cleaned with alcohol; 2) selecting alloy powder and automatic powder feeding apparatus adjusted in accordance with the pick working conditions and excavation target hardness, the choice of a suitable iron-based, nickel-based or cermet alloy powder, adjusting the automatic powder feeding means feeding powder rate to meet the desired coating thickness feed rate; composition of the iron-based alloy powder mainly containing Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B; the nickel based alloy powder consisting essentially of at least two Ni, Cr, Mo, W, Co, V, Fe, Si, Mn and a rare earth element Y2O3, La2O3, Ce and Hf; said cermet alloy powder of boron carbide , tungsten carbide, titanium carbide, chromium mixed preparation; 3) picks laser cladding head wear-resistant alloy coating is selected gas CO2 laser, CNC laser processing machine table, focusing the laser head along the pick axis feed, while rotating the pick, automatic powder feeding 置送粉头同步将合金粉末送入激光熔池,在截齿头部表面形成激光熔覆耐磨合金涂层,合金涂层厚度为1-1.25mm; 熔覆工艺参数如下: 激光功率P=3500~4500W; 光斑直径D=2.5~3.5mm; 扫描速度V=500~1500mm/min; 搭接率40~50%。 Powder feeding set header synchronization alloy powder into the molten pool formed by laser cladding wear resistant alloy coating, the coating thickness of the alloy of the head surface of the tooth cut 1-1.25mm; cladding process parameters are as follows: laser power P = 3500 ~ 4500W; spot diameter D 2.5 ~ 3.5mm =; scan speed V = 500 ~ 1500mm / min; overlapping ratio of 40 to 50%.
CN 200810012681 2008-08-07 2008-08-07 Strengthen process for pick head by laser fusing and coating wear-resistant coating CN101338428A (en)

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CN106835121A (en) * 2017-01-18 2017-06-13 唐山市丰南区天泽科技有限公司 A kind of preparation method of strengthened pick
CN106869928A (en) * 2016-12-30 2017-06-20 王华彬 Iron base metal ceramics composite cutter bit
CN107354383A (en) * 2017-07-07 2017-11-17 安徽同盛环件股份有限公司 A kind of high abrasion composite alloy ring and its preparation technology
CN108468047A (en) * 2018-03-20 2018-08-31 燕山大学 A kind of demoulding clamps the intensifying method of point with crane

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CN101613860B (en) 2009-07-22 2011-11-16 中国科学院金属研究所 Laser hard-surface coating process method of titanium alloy vane of gas turbine
CN101660081B (en) 2009-09-11 2011-01-05 陈中强 Sparkless hard alloy particle powder material special for conical bit drill
CN102021563B (en) 2009-09-17 2012-07-25 沈阳大陆激光技术有限公司 Exhaust pipe anticorrosion method for PTA (Pure Terephthalic Acid) production equipment
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CN101974751B (en) 2010-07-06 2011-10-05 山东能源机械集团大族再制造有限公司 Method for repairing speed reduction gearbox hole
CN101974749B (en) 2010-07-06 2011-10-05 山东能源机械集团大族再制造有限公司 Method for strengthening scraper by laser
CN101974748A (en) * 2010-07-06 2011-02-16 山东建能大族激光再制造技术有限公司 Method for laser-strengthening shaft parts
CN101974747A (en) * 2010-07-06 2011-02-16 山东建能大族激光再制造技术有限公司 Laser cladding method of conical surface of cutting teeth
CN102021568B (en) 2010-07-06 2011-11-23 山东能源机械集团大族再制造有限公司 Method for laser hardening gear part
CN101974748B (en) 2010-07-06 2011-11-09 山东能源机械集团大族再制造有限公司 Method for laser-strengthening shaft parts
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CN102453910A (en) * 2010-11-02 2012-05-16 沈阳大陆激光技术有限公司 Roller surface laser strengthened coating powder material of roller type crusher
CN102453911A (en) * 2010-11-02 2012-05-16 沈阳大陆激光技术有限公司 Surface strengthening method for excavator bucket teeth
CN102453910B (en) * 2010-11-02 2014-08-20 沈阳大陆激光技术有限公司 Roller surface laser strengthened coating powder material of roller type crusher
CN102453911B (en) * 2010-11-02 2014-12-31 沈阳大陆激光技术有限公司 Surface strengthening method for excavator bucket teeth
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CN103060707B (en) * 2013-01-01 2014-11-26 北京工业大学 Coating material for replacing hard chromium plating and laser-cladding preparation method thereof
CN103060707A (en) * 2013-01-01 2013-04-24 北京工业大学 Coating material for replacing hard chromium plating and laser-cladding preparation method thereof
CN103184450A (en) * 2013-03-21 2013-07-03 上海交通大学 Laser cladding method for cone-shaped part surface
CN103184450B (en) * 2013-03-21 2015-07-08 上海交通大学 Laser cladding method for cone-shaped part surface
CN103290405A (en) * 2013-05-22 2013-09-11 东北大学 Method for preparing high-speed steel coating by carrying out laser cladding on surface of spheroidal graphite cast iron
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CN104250805A (en) * 2013-06-28 2014-12-31 沈阳大陆激光成套设备有限公司 Method for preparing wear-resistant heat-resistant coating through laser cladding of surface of guide roller by bar rolling mill
CN104746070A (en) * 2013-06-29 2015-07-01 苏州唐氏机械制造有限公司 Laser repair method
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CN104746069A (en) * 2013-06-29 2015-07-01 苏州唐氏机械制造有限公司 Laser repair method
CN104741865A (en) * 2013-06-29 2015-07-01 苏州唐氏机械制造有限公司 Laser repairing method for die
CN103436880A (en) * 2013-07-29 2013-12-11 燕山大学 Preparation method of laser cladding reinforced pick box
CN103436880B (en) * 2013-07-29 2016-01-06 燕山大学 The preparation method of laser melting coating strengthened pick seat
CN105088220A (en) * 2014-05-15 2015-11-25 天津滨海雷克斯激光科技发展有限公司 Composite carbide and carbonitride alloy used for laser cladding
CN104353974A (en) * 2014-11-14 2015-02-18 北京中纬研科新材料有限公司 Processing method of anti-disengagement high-wear-resistance cutting teeth
CN104625448A (en) * 2014-12-19 2015-05-20 山东天工岩土工程设备有限公司 Tungsten carbide particle wear-resistant layer structure and machining method and application of tungsten carbide particle wear-resistant layer structure
CN104789924A (en) * 2015-03-24 2015-07-22 苏州华冲精密机械有限公司 Surface strengthening technology of food machine screw
CN104759724A (en) * 2015-05-07 2015-07-08 东北石油大学 Welding method for heating and connecting over-length hard alloy by using laser
CN106480448A (en) * 2015-09-02 2017-03-08 沈阳大陆激光工程技术有限公司 A kind of laser manufactures the method that extended reach well drag reduction subtracts torsion instrument wear-resistant coating
CN106480449A (en) * 2015-09-02 2017-03-08 沈阳大陆激光工程技术有限公司 A kind of method that laser manufactures heavy section universal mill horizontal roller
CN105201502A (en) * 2015-09-15 2015-12-30 安徽澳德矿山机械设备科技股份有限公司 High-hardness metal ceramic layer wear-resistant cutting tooth
CN105201501A (en) * 2015-09-15 2015-12-30 安徽澳德矿山机械设备科技股份有限公司 Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine
CN105483698A (en) * 2015-12-31 2016-04-13 安徽昱工机电科技有限公司 Cladding method for compounding tungsten carbide on high-chromium cast iron roller shell
CN105734563A (en) * 2016-04-25 2016-07-06 山西玉华再制造科技有限公司 Laser surface compound reinforced restoring method and shaft part restored with same
CN106521491A (en) * 2016-11-30 2017-03-22 沈阳大陆激光工程技术有限公司 Technique for manufacturing turnout bedplate of high-speed railway by laser
CN106869928A (en) * 2016-12-30 2017-06-20 王华彬 Iron base metal ceramics composite cutter bit
CN106835121A (en) * 2017-01-18 2017-06-13 唐山市丰南区天泽科技有限公司 A kind of preparation method of strengthened pick
CN107354383A (en) * 2017-07-07 2017-11-17 安徽同盛环件股份有限公司 A kind of high abrasion composite alloy ring and its preparation technology
CN108468047A (en) * 2018-03-20 2018-08-31 燕山大学 A kind of demoulding clamps the intensifying method of point with crane

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