CN109518120A - 一种钻杆表面加工工艺 - Google Patents
一种钻杆表面加工工艺 Download PDFInfo
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- CN109518120A CN109518120A CN201910036529.1A CN201910036529A CN109518120A CN 109518120 A CN109518120 A CN 109518120A CN 201910036529 A CN201910036529 A CN 201910036529A CN 109518120 A CN109518120 A CN 109518120A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/34—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
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- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
本发明公开了一种钻杆表面加工工艺,采用生产线式连续加工,杆料依次经过步骤:上料;真空下预热40min;真空下520℃辉光离子渗氮2h;真空下氧化40min;真空下冷却;下料。本发明提供的钻杆表面加工工艺,舍弃了原有的氮化加喷漆工艺,而采用辉光离子渗氮和表面氧化处理,有效提高钻杆表面硬度,耐磨损性能和抗锈能力得到保证,满足了钻杆的技术要求,最重要的是加工过程中安全、环保,杜绝毒性物质污染生态环境的情况发生。
Description
技术领域
本发明属于煤矿坑道钻探用金属钻杆技术领域,尤其是涉及一种钻杆表面加工工艺。
背景技术
钻杆是钻探行业中必不可少的工具,在钻杆生产过程中,需要对杆体包括接头处进行表面处理,原因是一旦表面有划伤或者缺口等,可能直接导致使用时发生弯曲、断裂事故,必须停工维修或更换钻杆,严重的影响钻孔质量,导致钻孔报废,大大降低钻探作业效率,无法满足各煤矿的生产需要。
现有钻杆一般都是冷校后车螺纹两头并液体氮化(即QPQ)处理,另外为了防锈还会对表面进行喷漆,由于氮化液体中含有铅,造成钻杆表面含铅量提高,加上表面的漆料,导致在钻探过程中岩土层受到污染,对环境影响很大,与环保生产理念相悖。由此,急需解决。
发明内容
本发明的目的在于提出一种钻杆表面加工工艺,解决现有表面处理工艺对环境污染大的问题。
为达上述目的,本发明采用以下技术方案:
一种钻杆表面加工工艺,采用生产线式连续加工,杆料依次经过步骤:上料;真空下预热40min;真空下520℃辉光离子渗氮2h;真空下氧化40min;真空下冷却;下料。
特别地,预热分为一次预热和二次预热,一次预热温度为280~320℃,二次预热温度为480~520℃。
特别地,氧化温度为340~380℃。
特别地,冷却温度≤200℃。
特别地,真空状态压强为480~520Pa。
特别地,预热、辉光离子渗氮、氧化、冷却工序分别对应设置有预热室、氮化室、氧化室和冷却室,预热室、氮化室、氧化室和冷却室依次对接,且两两之间设置有能开合的隔断门。
综上,本发明提供的钻杆表面加工工艺,舍弃了原有的氮化加喷漆工艺,而采用辉光离子渗氮和表面氧化处理,有效提高钻杆表面硬度,耐磨损性能和抗锈能力得到保证,满足了钻杆的技术要求,最重要的是加工过程中安全、环保,杜绝毒性物质污染生态环境的情况发生。
具体实施方式
下面通过具体实施方式来进一步说明本发明的技术方案。
本实施例提供了一种钻杆表面加工工艺,区别于传统的液体氮化加喷漆处理,而是采用生产线式连续加工,具体地,涉及依次对接的预热室、氮化室、氧化室和冷却室,各加工室两两之间设置有能开合的隔断门,待加工的杆料可以是通过驱动辊传动的方式,依次经过各加工室,完成各工序。
其中,预热分为一次预热和二次预热,一次预热的预热室中温度控制为280~320℃,二次预热的预热室中温度控制为480~520℃,氧化室中温度控制为340~380℃,冷却室中温度控制为≤200℃,各加工室中真空状态压强设置为480~520Pa。
通过逐步对杆料加热升温,达到辉光离子渗氮和氧化对应所需温度并对应氮化和氧化处理,最后冷却至200℃以下完成一系列加工。
具体步骤是:
1)上料;
2)真空下预热40min,一次预热温度优选为300℃,二次预热温度优选为500℃;
3)真空下520℃辉光离子渗氮2h;
4)真空下氧化40min,氧化温度优选为360℃;
5)真空下冷却,直至冷却至200℃以下;
6)下料。
综上,该实施例中的钻杆表面加工工艺,舍弃了原有的氮化加喷漆工艺,而采用辉光离子渗氮和表面氧化处理,有效提高钻杆表面硬度,耐磨损性能和抗锈能力得到保证,满足了钻杆的技术要求,最重要的是加工过程中安全、环保,杜绝毒性物质污染生态环境的情况发生。
以上内容仅为本发明的较佳实施例,对于本领域的普通技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,本说明书内容不应理解为对本发明的限制。
Claims (6)
1.一种钻杆表面加工工艺,其特征在于,采用生产线式连续加工,杆料依次经过步骤:上料;真空下预热40min;真空下520℃辉光离子渗氮2h;真空下氧化40min;真空下冷却;下料。
2.根据权利要求1所述的钻杆表面加工工艺,其特征在于:预热分为一次预热和二次预热,一次预热温度为280~320℃,二次预热温度为480~520℃。
3.根据权利要求1所述的钻杆表面加工工艺,其特征在于:氧化温度为340~380℃。
4.根据权利要求1所述的钻杆表面加工工艺,其特征在于:冷却温度≤200℃。
5.根据权利要求1所述的钻杆表面加工工艺,其特征在于:真空状态压强为480~520Pa。
6.根据权利要求1所述的钻杆表面加工工艺,其特征在于:预热、辉光离子渗氮、氧化、冷却工序分别对应设置有预热室、氮化室、氧化室和冷却室,所述预热室、氮化室、氧化室和冷却室依次对接,且两两之间设置有能开合的隔断门。
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CN113046533A (zh) * | 2021-03-11 | 2021-06-29 | 上海海隆石油管材研究所 | 一种提高v150高强度钻杆耐蚀性的表面处理工艺 |
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CN103820737A (zh) * | 2014-02-24 | 2014-05-28 | 无锡双马钻探工具有限公司 | 一种非开挖钻杆用钢 |
US20170292172A1 (en) * | 2014-10-06 | 2017-10-12 | 9013857 Canada Inc. | Method for heat treating long steel pipes |
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CN103820737A (zh) * | 2014-02-24 | 2014-05-28 | 无锡双马钻探工具有限公司 | 一种非开挖钻杆用钢 |
US20170292172A1 (en) * | 2014-10-06 | 2017-10-12 | 9013857 Canada Inc. | Method for heat treating long steel pipes |
CN107868929A (zh) * | 2016-09-23 | 2018-04-03 | 中国石油化工股份有限公司 | 一种井下工具再制造的方法 |
Non-Patent Citations (1)
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CN113046533A (zh) * | 2021-03-11 | 2021-06-29 | 上海海隆石油管材研究所 | 一种提高v150高强度钻杆耐蚀性的表面处理工艺 |
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