CN109518120A - 一种钻杆表面加工工艺 - Google Patents

一种钻杆表面加工工艺 Download PDF

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Publication number
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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drilling rod
rod surface
surface processing
preheating
processing technique
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鲍洪锋
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WUXI DOUBLE HORSE DRILLING TOOLS Co Ltd
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WUXI DOUBLE HORSE DRILLING TOOLS Co Ltd
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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
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • 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

一种钻杆表面加工工艺
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。
CN201910036529.1A 2019-01-15 2019-01-15 一种钻杆表面加工工艺 Pending CN109518120A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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Publication number Priority date Publication date Assignee Title
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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Title
付现桥等: "钻杆接头离子渗氮处理组织和性能研究_付现桥", 《当代化工》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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