CN102218622B - High-manganese steel surfacing solid-core welding wire and manufacturing method thereof - Google Patents
High-manganese steel surfacing solid-core welding wire and manufacturing method thereof Download PDFInfo
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- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007711 solidification Methods 0.000 claims description 10
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- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
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Abstract
本发明公开了一种高锰钢堆焊实芯焊丝，该实芯焊丝化学成分按质量百分比计为：0.8～1.1%C、0.6～1.0%Si、13～18%Mn、1.2～4.0%Cr、0.4～0.6%Mo、0.5～1.0%V，余量为Fe。其制造方法采用焊丝水平连续铸造工艺，经熔炼、静置、拉坯、二次冷却、定长切丝、检验、包装，直接得到合金化的实芯焊丝。该实芯焊丝配方合理，大大增加了堆焊层的初始硬度，使熔敷金属的抗冲击性能、耐磨损性能得到较大提高，且各种组分的氧化损失小，对环境损害小。适用于冲击磨料磨损和高应力碾碎磨料磨损工况条件下装备的关键耐磨零部件的堆焊、修复。
The invention discloses a high-manganese steel surfacing welding solid-core welding wire, the chemical composition of the solid-core welding wire is: 0.8-1.1%C, 0.6-1.0%Si, 13-18%Mn, 1.2-4.0%Cr , 0.4~0.6%Mo, 0.5~1.0%V, and the balance is Fe. The manufacturing method adopts the welding wire horizontal continuous casting process, and directly obtains alloyed solid core welding wire through smelting, standing still, billet drawing, secondary cooling, fixed-length cutting, inspection and packaging. The formula of the solid welding wire is reasonable, which greatly increases the initial hardness of the surfacing layer, greatly improves the impact resistance and wear resistance of the deposited metal, and the oxidation loss of various components is small, and the environmental damage is small. It is suitable for surfacing and repairing of key wear-resistant parts of equipment under the conditions of impact abrasive wear and high-stress crushing abrasive wear.
Description
技术领域 technical field
本发明涉及一种焊丝和焊丝生产技术，特别涉及一种耐磨的高锰钢堆焊实芯焊丝及其制造方法。 The invention relates to a welding wire and welding wire production technology, in particular to a wear-resistant high manganese steel surfacing solid welding wire and a manufacturing method thereof.
背景技术 Background technique
目前，国内一般使用的高锰钢堆焊焊接材料有焊条和药芯焊丝，在使用过程中主要存在以下问题：一是熔敷金属中合金元素主要依靠药皮过渡，合金元素的种类受到限制；二是焊接熔敷金属初始硬度低，在强冲击磨损工况下耐磨损性能差，表面堆焊层磨损严重，造成零部件更换频率快，金属资源的极大浪费，三是在焊接使用过程中，锰等元素烧损严重，且焊接过程中烟尘比较大，尤其在手工电弧焊中，焊接时会冒大量黄烟，对焊接操作人员健康造成极大伤害；四是由于高锰钢合金加工硬化速度快，难以用传统的锻造、轧制、拉拔生产工艺制造高锰钢堆焊实芯焊丝。 At present, the high-manganese steel surfacing welding materials generally used in China include welding rods and flux-cored welding wires. There are mainly the following problems in the process of use: First, the alloying elements in the deposited metal mainly rely on the transition of the coating, and the types of alloying elements are limited; The second is that the initial hardness of the welded deposited metal is low, and the wear resistance is poor under strong impact and wear conditions. Among them, manganese and other elements burn seriously, and the smoke and dust in the welding process are relatively large, especially in manual arc welding, a large amount of yellow smoke will be emitted during welding, which will cause great harm to the health of welding operators; the fourth is due to the high manganese steel alloy work hardening The speed is fast, and it is difficult to manufacture high-manganese steel surfacing solid wire with traditional forging, rolling, and drawing production processes.
发明内容 Contents of the invention
本发明的目的是提供一种熔敷金属抗拉强度高、初始硬度高和耐磨损，且对环境损害小的高锰钢堆焊实芯焊丝。 The object of the present invention is to provide a high manganese steel surfacing solid welding wire with high tensile strength, high initial hardness, wear resistance and little damage to the environment.
本发明的另一目的是提供一种制造高锰钢堆焊实芯焊丝的方法。 Another object of the present invention is to provide a method for manufacturing high manganese steel surfacing welding solid wire.
本发明实现第一个目的所采取的技术方案是： The technical scheme that the present invention realizes first object to take is:
一种高锰钢堆焊实芯焊丝，其化学成分按质量百分比计为：0.8～1.1%C、0.6～1.0%Si、13～18%Mn、1.2～4.0%Cr、0.4～0.6%Mo、0.5～1.0%V，余量为Fe。 A high-manganese steel surfacing solid welding wire, the chemical composition of which is calculated by mass percentage: 0.8-1.1%C, 0.6-1.0%Si, 13-18%Mn, 1.2-4.0%Cr, 0.4-0.6%Mo, 0.5～1.0%V, the balance is Fe.
本发明实现第二个目的所采取的技术方案是： The technical scheme that the present invention realizes second object to take is:
一种制造上述高锰钢堆焊实芯焊丝的方法，该方法采用焊丝水平连续铸造工艺，包括以下步骤： A method for manufacturing the above-mentioned high manganese steel surfacing welding solid wire, the method adopts a welding wire horizontal continuous casting process, comprising the following steps:
㈠熔炼：焊丝原料配方按质量百分比计，其中，0.9～1.2%C、0.7～1.1%Si、14～19%Mn、1.25～4.05%Cr、0.45～0.65%Mo、0.55～1.05%V，余量为Fe，先按配方将金属Cr、Mo、V和Fe配好，加入中频感应熔炼炉内进行熔炼，待完全熔化后，再加入其余组分C、Si和Mn进行熔炼，同时对炉内熔融液体进行覆盖和保护，覆盖剂为石灰和萤石，其比例为4：1，用量按原料质量的2%加入，此时炉内熔融液体的温度保持在1520～1540℃； (1) Smelting: The formula of welding wire raw materials is calculated by mass percentage, of which, 0.9~1.2%C, 0.7~1.1%Si, 14~19%Mn, 1.25~4.05%Cr, 0.45~0.65%Mo, 0.55~1.05%V, the rest The amount is Fe, first mix the metals Cr, Mo, V and Fe according to the formula, put them into the medium frequency induction melting furnace for melting, and after they are completely melted, add the rest of the components C, Si and Mn for melting, and at the same time, the furnace The molten liquid is used for covering and protection. The covering agent is lime and fluorite, the ratio of which is 4:1, and the dosage is added according to 2% of the raw material mass. At this time, the temperature of the molten liquid in the furnace is kept at 1520-1540 °C;
㈡静置：待熔融液体完全熔化后，在熔炼炉内进行静置，同时进行脱氧处理，脱氧剂选用强脱氧剂铝块或铝锭，用量按原料质量的0.2%加入，静置温度保持在1500～1510℃，静置时间30～35min； (2) Stand still: After the molten liquid is completely melted, put it still in the smelting furnace, and carry out deoxidation treatment at the same time. The deoxidizer is made of strong deoxidizer aluminum block or aluminum ingot, and the dosage is added according to 0.2% of the raw material mass. The standing temperature is kept at 1500～1510℃, standing time 30～35min;
㈢拉坯：启动水平连铸拉坯机，熔融液体随着引锭杆流进结晶器，结晶器的进水为室温自来水，出水温度33～38℃，冷却水压0.3～0.4Mpa，熔融液体在结晶器内形成初凝铸坯，初凝铸坯在引锭杆的作用下从结晶器拉出，拉坯方式采用拉—停—反推，此时的拉坯速度控制在230 mm/min、拉程3mm/次、中停时间0.2s、反推时间0.1s，引锭杆将初凝铸坯从结晶器拉出并通过拉坯机后，拉坯速度开始逐步提高，最高拉速控制在1700 mm/min以内，当拉速达到1700 mm/min时，此时的拉程为30mm/次、中停时间0.2s、反推时间0.1s，在整个拉坯过程中，炉内熔融液体温度始终保持在1490～1500℃； (3) Throwing: start the horizontal continuous casting casting machine, the molten liquid flows into the crystallizer along with the dummy rod, the water in the crystallizer is tap water at room temperature, the outlet water temperature is 33-38°C, the cooling water pressure is 0.3-0.4Mpa, the molten liquid The initial solidification slab is formed in the crystallizer, and the initial solidification slab is pulled out from the mold under the action of the dummy rod. The casting method adopts pull-stop-reverse push, and the casting speed at this time is controlled at 230 mm/min , drawing distance 3mm/time, intermediate stop time 0.2s, reverse push time 0.1s, after the dummy rod pulls the initial solidified billet out of the crystallizer and passes through the billet drawing machine, the billet casting speed begins to increase gradually, and the maximum casting speed is controlled Within 1700 mm/min, when the casting speed reaches 1700 mm/min, the drawing stroke at this time is 30mm/time, the stop time is 0.2s, and the reverse push time is 0.1s. During the whole casting process, the molten liquid in the furnace The temperature is always kept at 1490-1500°C;
㈣二次冷却：初凝铸坯拉出结晶器后进行二次冷却，进水为室温自来水，出水温度为45℃～50℃，冷却水压为0.2～0.3Mpa； (iv) Secondary cooling: after the initial solidification slab is pulled out of the crystallizer, secondary cooling is carried out. The incoming water is tap water at room temperature, the outlet water temperature is 45°C-50°C, and the cooling water pressure is 0.2-0.3Mpa;
㈤定长切丝：经拉坯、冷却后得到的实芯焊丝，校直后定长切丝，检验、包装，即得成品。 (5) Fixed-length wire cutting: the solid-core welding wire obtained after drawing and cooling is straightened and cut to length, inspected and packaged to obtain the finished product.
本发明提供的高锰钢堆焊实芯焊丝，熔敷金属的抗冲击性能及耐磨损性能得到很大的提高，适用于冲击磨料磨损和高应力碾碎磨料磨损工况条件下装备的关键耐磨零部件的堆焊、修复，在焊接过程中，自动化程度高、材料熔敷效率高、焊接烟尘小、环境污染小。采用本发明制造的高锰钢堆焊实芯焊丝，经焊接试验，熔敷金属的力学性能和焊丝化学成分的理化检测性能均符合企业标准Q/JXY11-2009技术要求。用于制造本发明高锰钢堆焊实芯焊丝的方法，采用水平连续铸造工艺，直接生产合金化的焊丝，各种组分的氧化损失小，提高了各种组分的利用率，而且生产的焊丝表面光滑无缺陷；在原料配方中加入了微量金属元素Cr、Mo、V等，大大增加堆焊层的初始硬度，而且解决了由于高锰钢合金加工硬化速度快，难以用传统的锻造、轧制、拉拔等生产工艺方法制造堆焊实芯焊丝的难题，降低了生产成本。 The high-manganese steel surfacing solid-core welding wire provided by the invention greatly improves the impact resistance and wear resistance of the deposited metal, and is suitable for equipment under the conditions of impact abrasive wear and high stress grinding abrasive wear. Overlay welding and repair of wear-resistant parts, in the welding process, the degree of automation is high, the efficiency of material deposition is high, the welding smoke is small, and the environmental pollution is small. The high manganese steel surfacing solid welding wire manufactured by the present invention, through the welding test, the mechanical properties of the deposited metal and the physical and chemical detection performance of the chemical composition of the welding wire all meet the technical requirements of the enterprise standard Q/JXY11-2009. The method for manufacturing the high manganese steel surfacing solid welding wire of the present invention adopts the horizontal continuous casting process to directly produce the alloyed welding wire, the oxidation loss of various components is small, the utilization rate of various components is improved, and the production The surface of the welding wire is smooth and free of defects; trace metal elements Cr, Mo, V, etc. are added to the raw material formula, which greatly increases the initial hardness of the surfacing layer, and solves the problem that it is difficult to use traditional forging due to the fast work hardening speed of high manganese steel alloys. , Rolling, drawing and other production processes to manufacture surfacing solid welding wire problems, reducing production costs.
附图说明 Description of drawings
图1为高锰钢堆焊实芯焊丝生产流程示意图。 Figure 1 is a schematic diagram of the production process of high manganese steel surfacing solid wire.
图中：1-熔炼炉，2-结晶器，3-拉坯机，4-二次冷却装置，5-剪切机，6--高锰钢堆焊实芯焊丝，7-引锭杆。 In the figure: 1-smelting furnace, 2-crystallizer, 3-drawing machine, 4-secondary cooling device, 5-shearing machine, 6-high manganese steel surfacing solid welding wire, 7-dummy rod.
具体实施方式 Detailed ways
实施例1：生产规格为Ф4.2mm的高锰钢堆焊实芯焊丝Example 1: Production of high manganese steel surfacing welding solid wire with a specification of Ф4.2mm
㈠熔炼：焊丝原料按质量百分比配料，其中，0.9% C、0.7% Si、19%Mn、4.05%Cr、0.45Mo%、0.55%V，余量是Fe。熔炼炉1的规格是150kg、160Kw、1000Hz中频感应炉，先按配方将金属Cr、Mo、V和Fe配好，加入中频感应熔炼炉1内进行熔炼，熔炼炉1功率逐渐提高至100kw，时间持续大约40min，原料开始熔化，待熔融液体完全熔化后，再加入其余组分C、Si和Mn进行熔炼，同时进行熔融液体的覆盖和保护，覆盖剂为石灰和萤石，其比例为4：1，用量按原料质量的2%加入，此时炉内熔融液体的温度保持在1520～1540℃； (1) Smelting: Welding wire raw materials are batched according to mass percentage, of which, 0.9% C, 0.7% Si, 19% Mn, 4.05% Cr, 0.45Mo%, 0.55% V, and the balance is Fe. The specifications of the melting furnace 1 are 150kg, 160Kw, 1000Hz medium frequency induction furnace. First, the metals Cr, Mo, V and Fe are prepared according to the formula, and then put into the medium frequency induction melting furnace 1 for melting. The power of the melting furnace 1 is gradually increased to 100kw. After about 40 minutes, the raw material starts to melt. After the molten liquid is completely melted, the remaining components C, Si and Mn are added for smelting, and the molten liquid is covered and protected at the same time. The covering agent is lime and fluorite, and its ratio is 4: 1. The dosage is added according to 2% of the raw material mass, and the temperature of the molten liquid in the furnace is kept at 1520-1540°C;
㈡静置：待熔融液体完全熔化后，在熔炼炉1内进行静置，同时进行脱氧处理，脱氧剂选用强脱氧剂铝块或铝锭，用量按原料质量的0.2%加入，静置时温度保持在1500～1510℃，静置时间为30～35min； (2) Stand still: After the molten liquid is completely melted, put it still in the smelting furnace 1, and carry out deoxidation treatment at the same time. The deoxidizer is made of aluminum block or aluminum ingot with strong deoxidizer, and the dosage is added according to 0.2% of the raw material mass. Keep it at 1500～1510℃, and keep it for 30～35min;
㈢拉坯：启动水平连铸拉坯机3，熔融液体随着引锭杆7流进结晶器2，结晶器的进水为室温自来水，出水温度为33～38℃，冷却水压为0.3～0.4MPa；熔融液体在结晶器2内形成初凝铸坯，此时平均拉坯速度控制在230 mm/min，拉程3mm/次，中停时间0.2s、反推时间0.1s。引锭杆7将初凝铸坯从结晶器2拉出、通过拉坯机3后，将拉坯速度稳步提高，最后控制拉速为1700 mm/min，此时拉程为30mm/次，中停时间0.2s、反推时间0.1s，在整个拉坯过程中，炉内熔融液体温度保持在1490～1500℃； (3) Throwing: start the horizontal continuous casting casting machine 3, the molten liquid flows into the crystallizer 2 along with the dummy bar 7, the water inflow to the crystallizer is tap water at room temperature, the outlet water temperature is 33-38°C, and the cooling water pressure is 0.3- 0.4MPa; the molten liquid forms an initial solidified cast slab in the crystallizer 2. At this time, the average casting speed is controlled at 230 mm/min, the drawing distance is 3mm/time, the stop time is 0.2s, and the reverse push time is 0.1s. The dummy rod 7 pulls the initial solidification slab out of the crystallizer 2, and after passing through the drawing machine 3, the casting speed is steadily increased, and finally the drawing speed is controlled to 1700 mm/min, and the drawing distance is 30 mm/time at this time. The stop time is 0.2s, and the reverse push time is 0.1s. During the whole casting process, the temperature of the molten liquid in the furnace is kept at 1490-1500°C;
㈣二次冷却：初凝铸坯拉出结晶器2后便进行二次冷却，二次冷却装置4设置在拉坯机3的前方或后方，或前后均设置，进水为室温自来水，出水温度为45℃～50℃，冷却水压为0.2～0.3MPa。 (iv) Secondary cooling: After the primary solidification slab is pulled out of the crystallizer 2, secondary cooling is performed. The secondary cooling device 4 is installed in front or behind the billet drawing machine 3, or both. The temperature is 45℃～50℃, and the cooling water pressure is 0.2～0.3MPa.
㈤定长切丝：经拉坯、冷却后得到的实芯焊丝6，校直后按规格需要经剪切机5定长切丝，检验、包装，得成品焊丝6入库。 (5) Fixed-length wire cutting: the solid welding wire 6 obtained after drawing and cooling is straightened and cut to length by the shearing machine 5 according to the specifications, inspected and packaged, and the finished welding wire 6 is put into storage.
上述实施例1制造的焊丝，经甘肃省机电产品质量监督检验站检测，焊丝化学成分为：0.87%C、0.62%Si、17.2%Mn、3.89%Cr、0.41%Mo、0.53%V，杂质总量0.04%(主要为S和P),余量是Fe。其熔敷金属的力学性能：抗拉强度768MPa，伸长率37%，冲击韧度152J,初始硬度34HRC,冲击硬度53HRC。焊丝表面光滑，无毛刺、划痕、锈蚀、氧化皮等缺陷。 The welding wire manufactured in the above-mentioned embodiment 1 was tested by Gansu Electromechanical Products Quality Supervision and Inspection Station. The content is 0.04% (mainly S and P), and the balance is Fe. The mechanical properties of its deposited metal: tensile strength 768MPa, elongation 37%, impact toughness 152J, initial hardness 34HRC, impact hardness 53HRC. The surface of the welding wire is smooth, without defects such as burrs, scratches, rust, and scale.
实施例2: 生产规格为Ф8.0mm的高锰钢堆焊实芯焊丝Example 2: Production of high manganese steel surfacing solid wire with a specification of Ф8.0mm
㈠熔炼：焊丝原料按质量百分比配料，其中，1.2% C、1.1% Si、14%Mn、1.25%Cr、0.65Mo%、1.05%V，余量是Fe。熔炼炉1的规格是150kg、160Kw、1000Hz中频感应炉，先按配方将金属Cr、Mo、V和Fe配好，加入中频感应熔炼炉1内进行熔炼，熔炼炉1功率逐渐提高至100kw，时间持续大约40min，焊丝原料开始熔化，待熔融液体完全熔化后，再加入其余组分C、Si和Mn进行熔炼，同时进行熔融液体的覆盖和保护，覆盖剂为石灰和萤石，其比例为4：1，用量按原料质量的2%加入，此时炉内熔融液体的温度保持在1520～1540℃； (1) Smelting: Welding wire raw materials are batched according to mass percentage, of which, 1.2% C, 1.1% Si, 14% Mn, 1.25% Cr, 0.65Mo%, 1.05% V, and the balance is Fe. The specifications of the melting furnace 1 are 150kg, 160Kw, 1000Hz medium frequency induction furnace. First, the metals Cr, Mo, V and Fe are prepared according to the formula, and then put into the medium frequency induction melting furnace 1 for melting. The power of the melting furnace 1 is gradually increased to 100kw. After about 40 minutes, the welding wire raw material starts to melt. After the molten liquid is completely melted, the remaining components C, Si and Mn are added for melting, and the molten liquid is covered and protected at the same time. The covering agent is lime and fluorite, and its ratio is 4 : 1, the dosage is added according to 2% of the raw material mass, at this time, the temperature of the molten liquid in the furnace is kept at 1520-1540°C;
㈡静置：待熔融液体完全熔化后，在熔炼炉1内进行静置，同时进行脱氧处理，脱氧剂选用强脱氧剂铝块或铝锭，用量按原料质量的0.2%加入，静置时温度保持在1500～1510℃，静置时间为30～35min； (2) Stand still: After the molten liquid is completely melted, put it still in the smelting furnace 1, and carry out deoxidation treatment at the same time. The deoxidizer is made of aluminum block or aluminum ingot with strong deoxidizer, and the dosage is added according to 0.2% of the raw material mass. Keep it at 1500～1510℃, and keep it for 30～35min;
㈢拉坯：启动水平连铸拉坯机2，熔融液体随着引锭杆7流进结晶器2，结晶器2的进水为室温自来水，出水温度为33～38℃，冷却水压为0.3～0.4MPa；熔融液体在结晶器2内形成初凝铸坯，此时拉坯速度控制在230 mm/min，拉程3mm/次，中停时间0.2s、反推时间0.1s。引锭杆将初凝铸坯从结晶器2拉出、通过拉坯机3后，将拉坯速度稳步提高，最后控制拉速为1400 mm/min，此时拉程为21mm/次，中停时间0.2s、反推时间0.1s。在整个拉坯过程中，炉内熔融液体温度保持在1490～1500℃； (3) Throwing: start the horizontal continuous casting casting machine 2, the molten liquid flows into the crystallizer 2 along with the dummy rod 7, the water inlet of the crystallizer 2 is tap water at room temperature, the outlet water temperature is 33-38°C, and the cooling water pressure is 0.3 ~0.4MPa; the molten liquid forms an initial solidified cast slab in the crystallizer 2. At this time, the casting speed is controlled at 230 mm/min, the drawing distance is 3mm/time, the stop time is 0.2s, and the reverse push time is 0.1s. The dummy bar pulls the initial solidification slab out of the crystallizer 2, and after passing through the drawing machine 3, the drawing speed is steadily increased, and finally the drawing speed is controlled at 1400 mm/min. The time is 0.2s, and the reverse push time is 0.1s. During the whole casting process, the temperature of the molten liquid in the furnace is kept at 1490-1500°C;
㈣二次冷却：初凝铸坯拉出结晶器2后便进行二次冷却，二次冷却装置4设置在拉坯机3的前方或后方，或前后均设置，进水为室温自来水，出水温度为45℃～50℃，冷却水压为0.2～0.3MPa。 (iv) Secondary cooling: After the primary solidification slab is pulled out of the crystallizer 2, secondary cooling is performed. The secondary cooling device 4 is installed in front or behind the billet drawing machine 3, or both. The temperature is 45℃～50℃, and the cooling water pressure is 0.2～0.3MPa.
㈤定长切丝：经拉坯、冷却后得到的实芯焊丝6，校直后按规格要求经剪切机5定长切丝，检验、包装、入库。 (5) Fixed-length wire cutting: the solid welding wire 6 obtained after drawing and cooling is straightened and cut to length by the shearing machine 5 according to the specification requirements, inspected, packaged, and put into storage.
上述实施例2制造的焊丝，经甘肃省机电产品质量监督检验站检测，焊丝化学成分为：1.03%C、0.98%Si、13.4%Mn、1.23%Cr、0.59%Mo、0.99% V，杂质总量0.039%(主要为S和P),余量是Fe。其熔敷金属的力学性能：抗拉强度759MPa，伸长率39%，冲击韧度158J,初始硬度35HRC,冲击硬度52HRC。焊丝表面光滑，无毛刺、划痕、锈蚀、氧化皮等缺陷。 The welding wire manufactured in the above-mentioned embodiment 2 is detected by the Gansu Electromechanical Product Quality Supervision and Inspection Station. The content is 0.039% (mainly S and P), and the balance is Fe. The mechanical properties of its deposited metal: tensile strength 759MPa, elongation 39%, impact toughness 158J, initial hardness 35HRC, impact hardness 52HRC. The surface of the welding wire is smooth, without defects such as burrs, scratches, rust, and scale.
附：本发明高锰钢堆焊实芯焊丝企业标准Q/JXY11-2009Attachment: Enterprise standard Q/JXY11-2009 of solid core welding wire for high manganese steel surfacing welding of the present invention
焊丝化学成分为：0.8～1.1% C、0.6～1.0% Si、13～18% Mn、1.2～4.0% Cr、0.4～0.6 Mo、0.5～1.0% V，余量为Fe； The chemical composition of welding wire is: 0.8～1.1% C, 0.6～1.0% Si, 13～18% Mn, 1.2～4.0% Cr, 0.4～0.6 Mo, 0.5～1.0% V, and the balance is Fe;
熔敷金属力学性能：抗拉强度≥750MPa，伸长率≥35%，冲击韧度≥150J，硬度32～37HRC，冲击硬度50～55HRC； Mechanical properties of deposited metal: tensile strength ≥ 750MPa, elongation ≥ 35%, impact toughness ≥ 150J, hardness 32-37HRC, impact hardness 50-55HRC;
焊丝表面质量：表面应光滑，无毛刺、划痕、锈蚀、氧化皮等缺陷。 Surface quality of welding wire: the surface should be smooth, without burrs, scratches, rust, scale and other defects.
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