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CN102995006B - Laser Induced Metal Surface Composite TiC Strengthening Method Using TiO2, Carbon Black and Acetylene as Components - Google Patents

Laser Induced Metal Surface Composite TiC Strengthening Method Using TiO2, Carbon Black and Acetylene as Components Download PDF

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CN102995006B
CN102995006B CN201210565118.XA CN201210565118A CN102995006B CN 102995006 B CN102995006 B CN 102995006B CN 201210565118 A CN201210565118 A CN 201210565118A CN 102995006 B CN102995006 B CN 102995006B
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metal surface
carbon black
acetylene
tio
laser
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CN102995006A (en
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王辉
陈晓龙
左健民
童涵
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Luyake Fire Vehicle Manufacturing Co ltd
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Changzhou University
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Abstract

The invention discloses a method for strengthening the compounding of TiC on a laser-induced metal surface layer taking TiO2, carbon black and acetylene as components and relates to the technical field of metal surface strengthening. The method comprises the following steps of: coating the mixed powder of TiO2 and the carbon black on a metal surface; and scanning on the metal surface by using a laser beam at the acetylene atmosphere, wherein the mixed powder of TiO2 and the carbon black is coated on the metal surface. Through the method, TiC can be generated on the metal surface layer through in-situ compounding so that the metal surface is strengthened and the wear resistance is improved.

Description

以TiO2、炭黑和乙炔为组元的激光诱导金属表层复合TiC强化方法Laser Induced Metal Surface Composite TiC Strengthening Method Using TiO2, Carbon Black and Acetylene as Components

技术领域 technical field

本发明涉及金属表面的强化技术领域。 The invention relates to the technical field of metal surface strengthening.

背景技术 Background technique

碳化钛(TiC)是典型的过渡金属碳化物,键型由离子键、共价键和金属键混合在同一晶体结构中,熔点高达3160℃。作为表面涂层,TiC具有高硬度、高熔点、耐磨损、高温抗氧化等优良的综合力学性能,是目前研究和应用最为广泛的薄膜材料之一。 Titanium carbide (TiC) is a typical transition metal carbide, the bond type is mixed in the same crystal structure by ionic bonds, covalent bonds and metal bonds, and its melting point is as high as 3160 °C. As a surface coating, TiC has excellent comprehensive mechanical properties such as high hardness, high melting point, wear resistance, and high temperature oxidation resistance. It is one of the most widely researched and applied thin film materials at present.

TiC涂层的制备技术目前主要是化学气相沉积(CVD) 和物理气相沉积(PVD)。CVD法沉积温度高,超过了绝大多数钢材的热处理温度,并且CVD 以氯化物为原料,需要一套提供制备含Ti 卤化物气体的设备,工艺复杂,成本较高,与目前提倡的绿色工业相抵触。PVD 法形成温度较低、涂层较薄,与基体的结合强度低,涂层易于从基底剥落,且绕镀性较差。 The preparation technologies of TiC coating are mainly chemical vapor deposition (CVD) and physical vapor deposition (PVD). The deposition temperature of the CVD method is high, which exceeds the heat treatment temperature of most steel materials, and CVD uses chlorides as raw materials, and requires a set of equipment for preparing Ti-containing halide gases. The process is complicated and the cost is high, which is different from the currently advocated green industry contradict. The PVD method has a lower formation temperature, a thinner coating, and a lower bonding strength with the substrate. The coating is easy to peel off from the substrate, and the coating is poor.

不论是CVD法还是PVD法,所获得的TiC涂层都较薄,厚度只有几个微米(μm),并且涂层与基体是机械结合,结合面强度低,使用中涂层易发生剥落。 Regardless of the CVD method or the PVD method, the TiC coating obtained is relatively thin, with a thickness of only a few microns (μm), and the coating is mechanically bonded to the substrate, and the strength of the bonding surface is low, and the coating is prone to peeling off during use.

发明内容 Contents of the invention

本发明的目的旨在提供一种以TiO2、炭黑和乙炔为组元的激光诱导金属表层复合TiC强化方法,可以使金属表面层原位复合生成TiC,从而对金属表面进行强化与提高耐磨性。 The purpose of the present invention is to provide a laser-induced metal surface composite TiC strengthening method with TiO 2 , carbon black and acetylene as components, which can make the metal surface layer composite in situ to form TiC, thereby strengthening the metal surface and improving the resistance Abrasive.

本发明是通过以下技术方案实现的: The present invention is achieved through the following technical solutions:

在金属表面涂敷TiO2和炭黑的混合粉末,在乙炔的氛围中,用激光束在敷TiO2和炭黑的混合粉末的金属表面进行扫描。 Coat the mixed powder of TiO 2 and carbon black on the metal surface, and scan the metal surface coated with the mixed powder of TiO 2 and carbon black with a laser beam in the atmosphere of acetylene.

通过以上工艺可以在金属表层原位复合生成TiC,实现对金属表面的强化与提高耐磨性。 Through the above process, TiC can be compounded in situ on the metal surface to realize the strengthening of the metal surface and improve the wear resistance.

本发明具有以下优点: The present invention has the following advantages:

1、TiC是在金属表层原位复合生成,而不是在表面沉积,因此不存在涂层与基体的结合力问题; 1. TiC is formed in situ on the surface of the metal, rather than deposited on the surface, so there is no problem of bonding between the coating and the substrate;

2、原位复合有TiC的金属表层厚度可达500微米,显微硬度可达HV2600以上,因此即使表面在使用过程中有微磨损,仍然具有很好的硬度和耐磨性; 2. The thickness of the metal surface compounded with TiC in situ can reach 500 microns, and the microhardness can reach above HV2600. Therefore, even if the surface is slightly worn during use, it still has good hardness and wear resistance;

3、反应组元为TiO2、炭黑和乙炔,以激光为能量源,不会对环境造成任何污染,是一种环保的金属表面强化与耐磨方法。 3. The reaction components are TiO 2 , carbon black and acetylene, and the laser is used as the energy source, which will not cause any pollution to the environment. It is an environmentally friendly metal surface strengthening and wear-resistant method.

进一步地,本发明所述TiO2为工业纯TiO2,TiO2和炭黑的混合质量比为7:3。 Further, the TiO 2 in the present invention is industrial pure TiO 2 , and the mixing mass ratio of TiO 2 and carbon black is 7:3.

在金属表面涂敷的所述TiO2和炭黑的混合粉末厚度为1.5~2毫米。 The thickness of the mixed powder of TiO 2 and carbon black coated on the metal surface is 1.5-2 mm.

所述乙炔的流量为6~7L/min。 The flow rate of the acetylene is 6-7L/min.

所述激光束的扫描速度为400~600mm/min,功率为700~1200W,波长为1.06μm或10. 6μm,光斑直径为2~3毫米。 The scanning speed of the laser beam is 400-600mm/min, the power is 700-1200W, the wavelength is 1.06μm or 10.6μm, and the spot diameter is 2-3mm.

具体实施方式 Detailed ways

    一、对Q235A、20钢、40钢、45钢、20G、20Mn、40Mn和60Mn碳素结构钢分别进行表面处理: 1. Surface treatment of Q235A, 20 steel, 40 steel, 45 steel, 20G, 20Mn, 40Mn and 60Mn carbon structural steel:

1、在碳素结构钢表面敷以工业纯TiO2和炭黑混合粉末,其质量比为7:3,厚度为1.5毫米; 1. Apply industrial pure TiO 2 and carbon black mixed powder on the surface of carbon structural steel, the mass ratio is 7:3, and the thickness is 1.5 mm;

2、随激光光斑移动,通以乙炔,乙炔流量为6L/min; 2. With the movement of the laser spot, acetylene is passed through, and the flow rate of acetylene is 6L/min;

3、激光光束以500mm/min速度进行扫描,激光功率为900W,激光波长为1.06μm,光斑直径为2毫米。 3. The laser beam scans at a speed of 500mm/min, the laser power is 900W, the laser wavelength is 1.06μm, and the spot diameter is 2mm.

4、经检测结果,在碳素结构钢表层原位复合生成厚度可达500微米的TiC层,显微硬度可达HV2600以上。 4. According to the test results, a TiC layer with a thickness of up to 500 microns is formed in situ on the surface of carbon structural steel, and the microhardness can reach above HV2600.

二、对20MnV、40Cr、35CrMoV和20CrMnSi合金结构钢分别进行表面处理: 2. Surface treatment of 20MnV, 40Cr, 35CrMoV and 20CrMnSi alloy structural steel respectively:

1、在合金结构钢表面敷以工业纯TiO2和炭黑混合粉末,其质量比为7:3,厚度为1.5毫米; 1. Apply industrial pure TiO 2 and carbon black mixed powder on the surface of alloy structural steel, the mass ratio is 7:3, and the thickness is 1.5 mm;

2、随激光光斑移动,通以乙炔,乙炔流量为6L/min; 2. With the movement of the laser spot, acetylene is passed through, and the flow rate of acetylene is 6L/min;

3、激光光束以400mm/min速度进行扫描,激光功率为700W,激光波长为1.06μm,光斑直径为2毫米。 3. The laser beam scans at a speed of 400mm/min, the laser power is 700W, the laser wavelength is 1.06μm, and the spot diameter is 2mm.

4、经检测结果,在合金结构钢表层原位复合生成厚度可达500微米的TiC层,显微硬度可达HV2650以上。 4. According to the test results, a TiC layer with a thickness of up to 500 microns is formed in situ on the surface of the alloy structural steel, and the microhardness can reach above HV2650.

三、对65Mn、60Si2Mn和50CrVA弹簧钢分别进行表面处理: 3. Surface treatment of 65Mn, 60Si2Mn and 50CrVA spring steel respectively:

1、在弹簧钢表面敷以工业纯TiO2和炭黑混合粉末,其质量比为7:3,厚度为2毫米; 1. Apply commercially pure TiO 2 and carbon black mixed powder on the surface of the spring steel, the mass ratio is 7:3, and the thickness is 2 mm;

2、随激光光斑移动,通以乙炔,乙炔流量为7L/min; 2. With the movement of the laser spot, acetylene is passed through, and the flow rate of acetylene is 7L/min;

3、激光光束以600mm/min速度进行扫描,激光功率为800W,激光波长为1.06μm,光斑直径为3毫米。 3. The laser beam scans at a speed of 600mm/min, the laser power is 800W, the laser wavelength is 1.06μm, and the spot diameter is 3mm.

4、经检测结果,在弹簧钢表层原位复合生成厚度可达500微米的TiC层,显微硬度可达HV2700以上。 4. According to the test results, a TiC layer with a thickness of up to 500 microns is formed in situ on the surface of the spring steel, and the microhardness can reach above HV2700.

四、对T8A、T9A、T10A、T11A、9SiCr、Cr12MoV和3Cr2Mo工具钢分别进行表面处理: 4. Surface treatment of T8A, T9A, T10A, T11A, 9SiCr, Cr12MoV and 3Cr2Mo tool steels respectively:

1、在工具钢表面敷以工业纯TiO2和炭黑混合粉末,其质量比为7:3,厚度为1.5毫米; 1. Apply industrial pure TiO 2 and carbon black mixed powder on the surface of the tool steel, the mass ratio is 7:3, and the thickness is 1.5 mm;

2、随激光光斑移动,通以乙炔,乙炔流量为6L/min; 2. With the movement of the laser spot, acetylene is passed through, and the flow rate of acetylene is 6L/min;

3、激光光束以400mm/min速度进行扫描,激光功率为1000W,激光波长为10.6μm,光斑直径为3毫米。 3. The laser beam scans at a speed of 400mm/min, the laser power is 1000W, the laser wavelength is 10.6μm, and the spot diameter is 3mm.

4、经检测结果,在工具钢表层原位复合生成厚度可达500微米的TiC层,显微硬度可达HV2700以上。 4. According to the test results, a TiC layer with a thickness of up to 500 microns is formed in situ on the surface of the tool steel, and the microhardness can reach above HV2700.

五、对W18Cr4V、W6Mo5Cr4V2和W6Mo5Cr4V2Al高速钢分别进行表面处理: 5. Surface treatment of W18Cr4V, W6Mo5Cr4V2 and W6Mo5Cr4V2Al high-speed steel:

1、在高速钢表面敷以工业纯TiO2和炭黑混合粉末,其质量比为7:3,厚度为1.5毫米; 1. Apply industrial pure TiO 2 and carbon black mixed powder on the surface of high-speed steel, the mass ratio is 7:3, and the thickness is 1.5 mm;

2、随激光光斑移动,通以乙炔,乙炔流量为7L/min; 2. With the movement of the laser spot, acetylene is passed through, and the flow rate of acetylene is 7L/min;

3、激光光束以500mm/min速度进行扫描,激光功率为1100W,激光波长为10.6μm,光斑直径为2毫米。 3. The laser beam scans at a speed of 500mm/min, the laser power is 1100W, the laser wavelength is 10.6μm, and the spot diameter is 2mm.

4、经检测结果,在高速钢表层原位复合生成厚度可达600微米的TiC层,显微硬度可达HV2700以上。 4. According to the test results, a TiC layer with a thickness of up to 600 microns is formed in situ on the surface of the high-speed steel, and the microhardness can reach above HV2700.

六、对YG3X、YG6X、YK15、YG20、YT15、YS25、YW1、YW2和YL10硬质合金分别进行表面处理: 6. Surface treatment of YG3X, YG6X, YK15, YG20, YT15, YS25, YW1, YW2 and YL10 cemented carbide respectively:

1、在硬质合金表面敷以工业纯TiO2和炭黑混合粉末,其质量比为7:3,厚度为2毫米; 1. Apply commercially pure TiO 2 and carbon black mixed powder on the surface of the cemented carbide, the mass ratio is 7:3, and the thickness is 2 mm;

2、随激光光斑移动,通以乙炔,乙炔流量为7L/min; 2. With the movement of the laser spot, acetylene is passed through, and the flow rate of acetylene is 7L/min;

3、激光光束以600mm/min速度进行扫描,激光功率为1200W,激光波长为10.6μm,光斑直径为3毫米。 3. The laser beam scans at a speed of 600mm/min, the laser power is 1200W, the laser wavelength is 10.6μm, and the spot diameter is 3mm.

4、经检测结果,在硬质合金表层原位复合生成厚度可达500微米的TiC层,显微硬度可达HV2700以上。 4. According to the test results, a TiC layer with a thickness of up to 500 microns is formed in situ on the surface of the cemented carbide, and the microhardness can reach above HV2700.

Claims (2)

1.以TiO2、炭黑和乙炔为组元的激光诱导金属表层复合TiC强化方法,其特征在于在金属表面涂敷TiO2和炭黑的混合粉末,在乙炔的氛围中,用激光束在敷TiO2和炭黑的混合粉末的金属表面进行扫描;所述TiO2为工业纯TiO2,TiO2和炭黑的混合质量比为7:3;在金属表面涂敷的所述TiO2和炭黑的混合粉末厚度为1.5~2毫米;所述激光束的扫描速度为400~600mm/min,功率为700~1200W,波长为1.06μm或10. 6μm,光斑直径为2~3毫米。 1. A laser-induced metal surface composite TiC strengthening method with TiO 2 , carbon black and acetylene as components, characterized in that the metal surface is coated with mixed powder of TiO 2 and carbon black, and in the atmosphere of acetylene, the laser beam is used to The metal surface of the mixed powder coated with TiO 2 and carbon black is scanned; the TiO 2 is industrial pure TiO 2 , and the mixing mass ratio of TiO 2 and carbon black is 7:3; the TiO 2 and carbon black coated on the metal surface The thickness of the mixed powder of carbon black is 1.5-2mm; the scanning speed of the laser beam is 400-600mm/min, the power is 700-1200W, the wavelength is 1.06μm or 10.6μm, and the spot diameter is 2-3mm. 2.根据权利要求1所述以TiO2、炭黑和乙炔为组元的激光诱导金属表层复合TiC强化方法,其特征在于所述乙炔的流量为6~7L/min。 2 . The laser-induced metal surface composite TiC strengthening method with TiO 2 , carbon black and acetylene as components according to claim 1 , characterized in that the flow rate of the acetylene is 6-7 L/min.
CN201210565118.XA 2012-12-24 2012-12-24 Laser Induced Metal Surface Composite TiC Strengthening Method Using TiO2, Carbon Black and Acetylene as Components Expired - Fee Related CN102995006B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1603238A (en) * 2004-09-27 2005-04-06 南京大学 Preparation method of titanium carbide and titanium nitride-dimensional nanostructure materials
KR20090077680A (en) * 2008-01-11 2009-07-15 테사 소시에타스 유로파에아 How to make titanium carbide
CN101812684A (en) * 2010-04-19 2010-08-25 姚建华 Method for preparing metal surface laser strengthened coat
JP2011001260A (en) * 2009-06-19 2011-01-06 Tesa Se Method for forming permanent process-mark on product, in particular on glass

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1603238A (en) * 2004-09-27 2005-04-06 南京大学 Preparation method of titanium carbide and titanium nitride-dimensional nanostructure materials
KR20090077680A (en) * 2008-01-11 2009-07-15 테사 소시에타스 유로파에아 How to make titanium carbide
JP2011001260A (en) * 2009-06-19 2011-01-06 Tesa Se Method for forming permanent process-mark on product, in particular on glass
CN101812684A (en) * 2010-04-19 2010-08-25 姚建华 Method for preparing metal surface laser strengthened coat

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Granted publication date: 20141210

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