CN104801714A - Manufacturing method of gas cutting opening - Google Patents
Manufacturing method of gas cutting opening Download PDFInfo
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- CN104801714A CN104801714A CN201510127634.8A CN201510127634A CN104801714A CN 104801714 A CN104801714 A CN 104801714A CN 201510127634 A CN201510127634 A CN 201510127634A CN 104801714 A CN104801714 A CN 104801714A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 34
- 239000010935 stainless steel Substances 0.000 claims abstract description 34
- 239000011230 binding agent Substances 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 3
- 239000007924 injection Substances 0.000 claims abstract description 3
- -1 polyethylene Polymers 0.000 claims description 9
- 238000005245 sintering Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229910001566 austenite Inorganic materials 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000009692 water atomization Methods 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 2
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 238000012387 aerosolization Methods 0.000 claims 1
- 238000005453 pelletization Methods 0.000 claims 1
- 238000012805 post-processing Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052802 copper Inorganic materials 0.000 abstract description 21
- 239000010949 copper Substances 0.000 abstract description 21
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract description 3
- 238000010298 pulverizing process Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005238 degreasing Methods 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009689 gas atomisation Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
本发明涉及一种气体割嘴的制造方法，采用不锈钢水雾粉化将不锈钢制成小于40微米的粉体，通过与粘结剂的混合制成颗粒，金属注射成型成所需的形状，再通过脱脂，真空高温加热成型，密封面磨成制得气体割嘴。该发明用不锈钢代替铜制备气体割嘴，适合大批量生产，成本与铜质割嘴基本一致，节约了大量铜资源；同时由于该方法基本不用切削加工，节约了大量的金属加工设备和人力，由于不锈钢割嘴寿命是铜质割嘴的10倍左右，因此总体成本仅仅是铜质割嘴的十分之一左右，同时也会节约大量使用成本，比如机用割嘴频繁的更换对生产的影响等。因此该发明将对气体割嘴传统的制作方法产生颠覆性的改变，将产生巨大的经济效益和社会效益。The invention relates to a method for manufacturing a gas cutting nozzle. The stainless steel is made into a powder of less than 40 microns by using stainless steel water mist pulverization, and is mixed with a binder to make particles, and the metal is injection molded into a required shape, and then The gas cutting nozzle is made by degreasing, vacuum high-temperature heating and molding, and grinding the sealing surface. This invention uses stainless steel instead of copper to prepare gas cutting nozzles, which is suitable for mass production, and the cost is basically the same as that of copper cutting nozzles, saving a lot of copper resources; at the same time, because this method basically does not need cutting, it saves a lot of metal processing equipment and manpower. Since the service life of stainless steel cutting nozzles is about 10 times that of copper cutting nozzles, the overall cost is only about one tenth of that of copper cutting nozzles, and it will also save a lot of use costs. impact etc. Therefore, this invention will produce subversive changes to the traditional manufacturing method of gas cutting nozzles, and will generate huge economic and social benefits.
Description
技术领域 technical field
本发明涉及一种气体割嘴的制造方法。 The invention relates to a method for manufacturing a gas cutting nozzle.
背景技术 Background technique
气体割嘴在工业上应用广泛，包括燃气（乙炔、丙烷等）割嘴、等离子体割嘴等，是切割钢板、铁板、铜板及其他金属材料的必备。按照国家标准气体割嘴又分为手用、机用两种，手用G01-100割嘴3种型号，手用G01-30割嘴3种型号，手用G01-300 型有6种型号，机用割嘴有8种型号，美国、欧洲各自有自己的规格要求。据调查，全国每年的气体割嘴需求量为5亿只左右，全部为铜质，大约用铜量为3万吨，全球的需求量20亿只左右，用铜量大约为12万吨。切割钢板时，熔化飞溅的熔渣，如果飞到割嘴的出气口，或者被火焰热量软化的割嘴碰到钢板，铜质割嘴很容易变形或堵塞，影响气口处气体的喷出形状，从而使喷出的火焰变形，影响切割的正常进行。如果换用不锈钢割嘴， 由于不锈钢具有较高的熔点，而避免了出气口的易损现象，持久的高温加热也不容易使不锈钢软化变形，从而大大提高割嘴的使用寿命。割嘴采用铜质材料的主要原因是由于铜材比较软，方便切削加工成复杂的形状，而不锈钢比较硬，难以切削加工复杂的形状。但是我国是一个贫铜国家，铜属于有色金属，资源已近枯竭，铜材价格是不锈钢的3-4倍。不锈钢的开始熔化温度在1500°C以上，而紫铜的熔点是1080°C，远远低于不锈钢的熔化温度。 Gas cutting nozzles are widely used in industry, including gas (acetylene, propane, etc.) cutting nozzles, plasma cutting nozzles, etc., which are necessary for cutting steel plates, iron plates, copper plates and other metal materials. According to the national standard, gas cutting nozzles are divided into two types: hand-used and machine-used. There are 3 models of hand-used G01-100 cutting nozzles, 3 models of hand-used G01-30 cutting nozzles, and 6 models of hand-used G01-300. There are 8 types of machine cutting nozzles, and the United States and Europe have their own specifications. According to the survey, the national annual demand for gas cutting nozzles is about 500 million pieces, all of which are made of copper, and the copper consumption is about 30,000 tons. The global demand is about 2 billion pieces, and the copper consumption is about 120,000 tons. When cutting steel plates, if the molten slag flies to the gas outlet of the cutting nozzle, or the cutting nozzle softened by the flame heat touches the steel plate, the copper cutting nozzle is easily deformed or blocked, which will affect the shape of the gas ejected from the gas port. As a result, the ejected flame is deformed, which affects the normal cutting. If the stainless steel cutting nozzle is used instead, due to the high melting point of stainless steel, the vulnerable phenomenon of the air outlet is avoided, and the prolonged high temperature heating is not easy to soften and deform the stainless steel, thus greatly improving the service life of the cutting nozzle. The main reason for using copper material for the cutting tip is that copper is relatively soft and easy to cut into complex shapes, while stainless steel is relatively hard and difficult to cut into complex shapes. However, my country is a copper-poor country. Copper is a non-ferrous metal, and its resources are nearly exhausted. The price of copper is 3-4 times that of stainless steel. The melting temperature of stainless steel is above 1500°C, while the melting point of copper is 1080°C, which is far lower than the melting temperature of stainless steel.
发明内容 Contents of the invention
针对现有技术存在的不足，本发明采用不锈钢水雾粉化将不锈钢制成小于40微米的粉体，通过与塑料粘结剂的混合制成颗粒，金属注射成型成所需的形状，再通过脱脂，真空高温加热成型，密封面磨成制得不锈钢气体割嘴，寿命是铜质割嘴的10倍左右。 Aiming at the deficiencies in the prior art, the present invention adopts stainless steel water mist pulverization to make stainless steel into a powder less than 40 microns, mix it with a plastic binder to make granules, and inject the metal into the required shape, and then pass Degreasing, vacuum high-temperature heating molding, sealing surface grinding to make stainless steel gas cutting nozzle, the service life is about 10 times that of copper cutting nozzle.
本发明的技术方案为：一种气体割嘴的制造方法，制造方法包括： The technical proposal of the present invention is: a kind of manufacturing method of gas cutting nozzle, and manufacturing method comprises:
（1）选取不锈钢水雾化或气雾化粉。 (1) Select stainless steel water atomization or gas atomization powder.
（2）将不锈钢粉与粘结剂按照体积比混合均匀，密炼、挤出造粒制成喂料。 (2) Mix stainless steel powder and binder evenly according to the volume ratio, banbury, extrude and granulate to make feed.
（3）根据标准所规定的气体割嘴的尺寸和结构制作注射成型所用的模具，制备模具尺寸的要求是根据毛胚烧结后的收缩率，将喂料利用注射成型机注入模具成型，开模取出后为毛坯。 (3) Make the mold for injection molding according to the size and structure of the gas cutting nozzle stipulated in the standard. The requirement for the size of the mold is to inject the material into the mold with the injection molding machine according to the shrinkage rate of the blank after sintering, and open the mold After being taken out, it is a blank.
（4）将毛胚经过液体浸泡或者加热分解的办法脱除制品中的粘结剂。 (4) Remove the binder in the product by immersing the blank in liquid or thermally decomposing it.
（5）将脱除粘结剂后的制品进行高温烧结致密化后得到烧结制品。 (5) Sintering and densifying the product after removing the binder at high temperature to obtain a sintered product.
（6）将烧结制品根据需要进行多种后处理后，安装在一起得到最终气体割嘴。 (6) After the sintered products are subjected to various post-treatments as required, they are installed together to obtain the final gas cutting nozzle.
优化地，不锈钢的结构为奥氏体，型号包括304和303，粒径小于40微米。 Optimally, the structure of the stainless steel is austenite, the types include 304 and 303, and the particle size is less than 40 microns.
优化地，不锈钢粉与粘结剂按照1～0.5:1.5的体积比混合。 Optimally, the stainless steel powder and the binder are mixed in a volume ratio of 1-0.5:1.5.
优化地，粘结剂包括聚乙烯、聚丙烯、EVA、聚乙烯醇、聚甲基丙烯酸甲酯、硬脂酸、聚乙烯、石蜡等两种以上的组成。 Optimally, the binder includes polyethylene, polypropylene, EVA, polyvinyl alcohol, polymethyl methacrylate, stearic acid, polyethylene, paraffin and more than two components.
优化地，烧结温度为1100℃～1600℃。 Optimally, the sintering temperature is 1100°C-1600°C.
优化地，密度达到不锈钢密度的95%～98%。 Optimally, the density reaches 95%-98% of that of stainless steel.
有益效果在于，本发明采用不锈钢水雾粉化将不锈钢制成小于40微米的粉体，通过与粘结剂的混合制成颗粒，金属注射成型成所需的形状，再通过脱脂，真空高温加热成型，密封面磨成制得气体割嘴。该发明用不锈钢代替铜制备气体割嘴，适合大批量生产，成本与铜质割嘴基本一致，节约了大量铜资源；同时由于该方法基本不用切削加工，节约了大量的金属加工设备和人力，由于不锈钢割嘴寿命是铜质割嘴的10倍左右，因此总体成本仅仅是铜质割嘴的十分之一左右，同时也会节约大量使用成本，比如机用割嘴频繁的更换对生产的影响等。因此该发明将对气体割嘴传统的制作方法产生颠覆性的改变，将产生巨大的经济效益和社会效益。 The beneficial effect is that the present invention adopts stainless steel water mist pulverization to make stainless steel into a powder of less than 40 microns, which is mixed with a binder to make particles, and the metal is injection molded into the desired shape, and then degreased and heated at high temperature in vacuum Molding, the sealing surface is ground into a gas cutting nozzle. This invention uses stainless steel instead of copper to prepare gas cutting nozzles, which is suitable for mass production, and the cost is basically the same as that of copper cutting nozzles, saving a lot of copper resources; at the same time, because this method basically does not need cutting, it saves a lot of metal processing equipment and manpower. Since the service life of stainless steel cutting nozzles is about 10 times that of copper cutting nozzles, the overall cost is only about one tenth of that of copper cutting nozzles, and it will also save a lot of use costs. impact etc. Therefore, this invention will produce subversive changes to the traditional manufacturing method of gas cutting nozzles, and will generate huge economic and social benefits.
本发明采用奥氏体作为材料，由于奥氏体不具有磁性，切割时铁屑不易吸附在割嘴上，有效保证割嘴的正常使用，不会发生堵塞，延长割嘴使用寿命。 The present invention uses austenite as the material. Since the austenite is not magnetic, iron filings are not easy to be adsorbed on the cutting nozzle during cutting, which effectively ensures the normal use of the cutting nozzle without blockage and prolongs the service life of the cutting nozzle.
具体实施方式 Detailed ways
实施例1： Example 1:
本发明的技术方案为：一种气体割嘴的制造方法，制造方法包括：（1）选取不锈钢水雾化或气雾化粉；（2）将不锈钢粉与粘结剂按照体积比混合均匀，密炼、挤出造粒制成喂料；（3）根据标准所规定的气体割嘴的尺寸和结构制作注射成型所用的模具，制备模具尺寸的要求是根据毛胚烧结后的收缩率，将喂料利用注射成型机注入模具成型，开模取出后为毛坯；（4）将毛胚经过液体浸泡或者加热分解的办法脱除制品中的粘结剂；（5）将脱除粘结剂后的制品进行高温烧结致密化后得到烧结制品；（6）将烧结制品根据需要进行多种后处理后，安装在一起得到最终气体割嘴，不锈钢的结构为奥氏体，型号为304，粒径小于40微米，不锈钢粉与粘结剂按照1:1.5的体积比混合，粘结剂由聚乙烯、聚丙烯组成，烧结温度为1100℃，制品的密度达到不锈钢密度的95%。 The technical solution of the present invention is: a method of manufacturing a gas cutting nozzle, the manufacturing method includes: (1) selecting stainless steel water atomization or gas atomization powder; (2) mixing the stainless steel powder and binder evenly according to the volume ratio, (3) According to the size and structure of the gas cutting nozzle specified in the standard, the mold used for injection molding is made. The requirement for the size of the mold is based on the shrinkage rate of the blank after sintering The feeding material is injected into the mold by an injection molding machine, and the blank is taken out after the mold is opened ; (4) The blank is soaked in liquid or heated to decompose to remove the binder in the product; (5) After the binder is removed The products are sintered and densified at high temperature to obtain sintered products; (6) After the sintered products are subjected to various post-treatments as required, they are installed together to obtain the final gas cutting nozzle. The structure of stainless steel is austenite, the model is 304, and the particle size is Less than 40 microns, stainless steel powder and binder are mixed according to the volume ratio of 1:1.5, the binder is composed of polyethylene and polypropylene, the sintering temperature is 1100 ℃, and the density of the product reaches 95% of the density of stainless steel.
实施例2： Example 2:
本实施例与实施例1的区别在于：奥氏体型号为303。 The difference between this embodiment and Embodiment 1 is that the type of austenite is 303.
实施例3： Example 3:
本实施例与实施例1的区别在于：不锈钢粉与粘结剂按照0.5:1.5的体积比混合。 The difference between this embodiment and embodiment 1 is that the stainless steel powder and the binder are mixed according to the volume ratio of 0.5:1.5.
实施例4： Example 4:
本实施例与实施例1的区别在于：粘结剂由聚乙烯、石蜡组成。 The difference between this embodiment and embodiment 1 is that the binder is composed of polyethylene and paraffin.
实施例5： Example 5:
本实施例与实施例1的区别在于：烧结温度为1600℃。 The difference between this embodiment and embodiment 1 is that the sintering temperature is 1600°C.
实施例6： Embodiment 6:
本实施例和实施例1的区别在于，制品密度达到不锈钢密度的98%。 The difference between this embodiment and embodiment 1 is that the product density reaches 98% of the density of stainless steel.
所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，奥氏体型号在3系列内均有相同的技术效果，3系列内其他型号奥氏体均属于本发明的保护范围。 The described embodiments are some, but not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work, the austenitic type has the same technical effect in the 3 series, and the other types of austenitic in the 3 series All belong to the protection scope of the present invention.
Claims (6)
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| CN105345010A (en) * | 2015-11-25 | 2016-02-24 | 宁波渝鑫金属粉末科技有限公司 | Preparing method for electric connector molded through powder injection |
| CN106984821A (en) * | 2017-04-13 | 2017-07-28 | 惠州威博精密科技有限公司 | A kind of manufacture method of swirl nozzle |
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| CN105251992A (en) * | 2015-11-25 | 2016-01-20 | 宁波渝鑫金属粉末科技有限公司 | Preparation method of alloy counterweight block injected and molded by powder |
| CN105268978A (en) * | 2015-11-25 | 2016-01-27 | 宁波渝鑫金属粉末科技有限公司 | Preparation method for piston by powder injection molding |
| CN105290391A (en) * | 2015-11-25 | 2016-02-03 | 宁波渝鑫金属粉末科技有限公司 | Method for manufacturing sampler through powder injection moulding |
| CN105345010A (en) * | 2015-11-25 | 2016-02-24 | 宁波渝鑫金属粉末科技有限公司 | Preparing method for electric connector molded through powder injection |
| CN106984821A (en) * | 2017-04-13 | 2017-07-28 | 惠州威博精密科技有限公司 | A kind of manufacture method of swirl nozzle |
| CN108672695A (en) * | 2018-05-29 | 2018-10-19 | 东莞华晶粉末冶金有限公司 | A kind of metal powder injection molding feeding and preparation method thereof |
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