CN107447184A - 一种低温气体渗碳炉 - Google Patents

一种低温气体渗碳炉 Download PDF

Info

Publication number
CN107447184A
CN107447184A CN201710495216.3A CN201710495216A CN107447184A CN 107447184 A CN107447184 A CN 107447184A CN 201710495216 A CN201710495216 A CN 201710495216A CN 107447184 A CN107447184 A CN 107447184A
Authority
CN
China
Prior art keywords
furnace wall
baffle plate
air inlet
furnace
lower baffle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710495216.3A
Other languages
English (en)
Other versions
CN107447184B (zh
Inventor
孙振田
马飞
孙金全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Academy Of Machinery Group Qingdao Branch Co ltd
Original Assignee
Qingdao Branch Of China Academy Of Machinery Science And Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Branch Of China Academy Of Machinery Science And Technology filed Critical Qingdao Branch Of China Academy Of Machinery Science And Technology
Publication of CN107447184A publication Critical patent/CN107447184A/zh
Application granted granted Critical
Publication of CN107447184B publication Critical patent/CN107447184B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C23C8/20—Carburising
    • 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
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

本发明公开了一种对流式气体渗碳炉，包括设有交替的上挡板和下挡板，上挡板与上炉壁连接，并与下炉壁留有空隙作为气体通道，下挡板与下炉壁连接，并与上炉壁留有空隙作为气体通道，相邻的上下挡板两侧分别设有上进风口和下进风口，上进风口设于炉顶，并设于上挡板一侧，下挡板设于炉底，并设于下挡板一侧，进气口右侧设有上挡板，下挡板右侧的下炉壁开有下进气口；在炉膛中央设置有鼓风机，上下挡板上设有放置工件的工件架，本发明采用上下交替进风的方式，使气流的温度在较短时间内达到均衡，同时通过对流热交换，使整个炉膛内的气体温度达到均匀的一致。

Description

一种低温气体渗碳炉
技术领域
本发明涉及一种热处理电炉，尤其涉及一种对流式气体渗碳炉。
背景技术
渗碳是常见的对金属表面进行强化处理的方法，具体方法为将工件置入具有活性渗碳介质中，加热后保温，使渗碳介质中分解出的活性碳原子渗入钢件表层，从而获得表层高碳层，使钢件的表面硬度和强度大幅增加，同时钢件内部仍保持原有成分的良好韧性和塑性。渗碳主要是在渗碳炉中进行，目前所采用的气体渗碳炉主要是采用井式渗碳炉或网带式加热渗碳炉，采用加热的方式使渗碳气体进入，但由于渗碳炉多采用电阻式加热，加热体分布在四周炉壁，因而造成加热时炉壁处温度较高，而炉子中心处温度较低，同时由于控温与加热系统的局限，并不能保证
加之炉内气体扩散不充分，导致炉内温度不均匀，影响了渗碳效果，造成同一批工件的渗碳层厚度波动大，性能和使用寿命不稳定，影响了渗碳效率。
发明内容
为解决上述技术问题，本发明提供了一种对流式气体渗碳炉。
一种对流式气体渗碳炉，包括炉体，所述炉体包括外壳和炉膛，外壳和炉膛之间设有炉衬，炉衬内设有加热体，炉体上设有炉门；
所述炉膛内包括前后左右上下四个炉壁，并在前后左右每个炉壁处设有上挡板和下挡板，以一处炉壁为例，上炉壁开有上进风口，进气口右侧设有上挡板，所述上挡板与上炉壁连接，并与下炉壁留有空隙作为气体通道，上挡板右侧设有下挡板，下挡板与下炉壁连接，并与上炉壁留有空隙作为气体通道，下挡板右侧的下炉壁开有下进气口；
前后左右四个炉壁均设有这样的上挡板和下挡板，形成“口”形结构，炉体的四周分别设有四个进风口，包括两个上进风口和两个下进风口，在炉膛中央设置有鼓风机，该鼓风机包括旋转轴，旋转轴上设有多组鼓风叶片，
上下挡板上设有放置工件的工件架，该工件架为栅状结构。
进行渗碳的方法包括，将工件表面进行超声波清洗，去除油污后，利用活化剂进行表面钝化膜去除，随后置于渗碳炉中的工件架上，对炉内抽真空后加热到预定温度，随后开启阀门，使渗碳气体由上进风口和下进风口分别进入炉内，从上进风口进入的渗碳气体沿着炉壁下行，经过上挡板与下炉壁之间的通道再沿炉壁上行，与此同时，从下进风口进入的渗碳气体沿着炉壁上行，经过下挡板与上炉壁之间的通道沿再沿炉壁下行，两股气流在中途交汇并产生对流，在该处形成紊流，使温度和浓度均匀化，同时炉膛中央设置的鼓风机通过鼓风叶片的旋转对四壁的气体进行进一步扰动，使其沿旋转轴的旋转方向流动，在整个炉膛内实现气体的对流，并通过对流热交换，使整个炉膛内的气体温度达到均匀的一致。
本发明相对于现有技术的优点在于：采用上下交替进风的方式，使渗碳气体携带炉壁处的热量进行移动，并在中途交汇，气流的交汇产生碰撞，这样，即使炉壁处的温度产生波动或偏差，气流交汇产生的紊流也会使其混合，并且由于对流传热的速度远远大于传导传热，因而使气流的温度在较短时间内达到均衡，同时炉体中央的鼓风机对气流产生水平方向的扰动，通过对流热交换，使整个炉膛内的气体温度达到均匀的一致。
附图说明
图1为本发明渗碳炉结构示意图。
图中：1-外壳，2-炉衬，3-上挡板，4-下挡板，5-上风口，6-下风口。
具体实施方式
下面结合附图和具体实施方式对本发明做进一步说明。
为解决上述技术问题，本发明提供了一种对流式气体渗碳炉。
一种对流式气体渗碳炉，包括炉体，所述炉体包括外壳1和炉膛，外壳和炉膛之间设有炉衬2，炉衬内设有加热体，炉体上设有炉门；
所述炉膛内包括前后左右上下四个炉壁，并在前后左右每个炉壁处设有上挡板3和下挡板4，以一处炉壁为例，上炉壁开有上进风口5，进气口右侧设有上挡板，所述上挡板与上炉壁连接，并与下炉壁留有空隙作为气体通道，上挡板右侧设有下挡板，下挡板与下炉壁连接，并与上炉壁留有空隙作为气体通道，下挡板右侧的下炉壁开有下进风口6；
前后左右四个炉壁均设有这样的上挡板和下挡板，形成“口”形结构，炉体的四周分别设有四个进风口，包括两个上进风口和两个下进风口，在炉膛中央设置有鼓风机，该鼓风机包括旋转轴，旋转轴上设有多组鼓风叶片，
上下挡板上设有放置工件的工件架，该工件架为栅状结构。
进行渗碳的方法包括，将工件表面进行超声波清洗，去除油污后，利用活化剂进行表面钝化膜去除，随后置于渗碳炉中的工件架上，对炉内抽真空后加热到预定温度，随后开启阀门，使渗碳气体由上进风口和下进风口分别进入炉内，从上进风口进入的渗碳气体沿着炉壁下行，经过上挡板与下炉壁之间的通道再沿炉壁上行，与此同时，从下进风口进入的渗碳气体沿着炉壁上行，经过下挡板与上炉壁之间的通道沿再沿炉壁下行，两股气流在中途交汇并产生对流，在该处形成紊流，使温度和浓度均匀化，同时炉膛中央设置的鼓风机通过鼓风叶片的旋转对四壁的气体进行进一步扰动，使其沿旋转轴的旋转方向流动，在整个炉膛内实现气体的对流，并通过对流热交换，使整个炉膛内的气体温度达到均匀的一致。
以上所述，仅是本发明的较佳实施例，并非对本发明作任何限制，凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效结构变化，均仍属于本发明技术方案的保护范围内。

Claims (2)

1.一种对流式气体渗碳炉，包括炉体，所述炉体包括外壳和炉膛，外壳和炉膛之间设有炉衬，炉衬内设有加热体，炉体上设有炉门；其特征在于，
所述炉膛内包括四个炉壁、炉顶、炉底，并在每个炉壁处设有交替的上挡板和下挡板，所述上挡板与上炉壁连接，并与下炉壁留有空隙作为气体通道，所述下挡板与下炉壁连接，并与上炉壁留有空隙作为气体通道，相邻的上下挡板两侧分别设有上进风口和下进风口，其中，上进风口设于炉顶，并设于上挡板一侧，下挡板设于炉底，并设于下挡板一侧，进气口右侧设有上挡板，下挡板右侧的下炉壁开有下进气口；
在炉膛中央设置有鼓风机，该鼓风机包括旋转轴，旋转轴上设有多组鼓风叶片，
上下挡板上设有放置工件的工件架，该工件架为栅状结构。
2.利用上述渗碳炉进行渗碳的方法，其特征在于，将工件表面进行超声波清洗，去除油污后，利用活化剂进行表面钝化膜去除，随后置于渗碳炉中的工件架上，对炉内抽真空后加热到预定温度，随后开启阀门，使渗碳气体由上进风口和下进风口分别进入炉内，从上进风口进入的渗碳气体沿着炉壁下行，经过上挡板与下炉壁之间的通道再沿炉壁上行，与此同时，从下进风口进入的渗碳气体沿着炉壁上行，经过下挡板与上炉壁之间的通道沿再沿炉壁下行，两股气流在中途交汇并产生对流，在该处形成紊流，同时炉膛中央设置的鼓风机通过鼓风叶片的旋转对四壁的气体进行进一步扰动，使其沿旋转轴的旋转方向流动，在整个炉膛内实现气体的对流。
CN201710495216.3A 2016-12-22 2017-06-26 一种对流式气体渗碳炉 Active CN107447184B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611199803 2016-12-22
CN201611199803X 2016-12-22

Publications (2)

Publication Number Publication Date
CN107447184A true CN107447184A (zh) 2017-12-08
CN107447184B CN107447184B (zh) 2019-12-03

Family

ID=60486704

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710495216.3A Active CN107447184B (zh) 2016-12-22 2017-06-26 一种对流式气体渗碳炉

Country Status (1)

Country Link
CN (1) CN107447184B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914047A (zh) * 2018-08-21 2018-11-30 嘉兴市敬德机械制造有限公司 一种可移动的井式气体渗碳炉

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010007128A (ja) * 2008-06-26 2010-01-14 Toyota Motor Corp 熱処理治具および熱処理装置
CN201713544U (zh) * 2010-04-28 2011-01-19 富威科技（吴江）有限公司 钟罩式强对流光亮退火炉
CN202936472U (zh) * 2012-12-03 2013-05-15 江苏金色工业炉制造有限公司 一种新型燃气加热箱式渗碳炉后室
CN205316921U (zh) * 2015-12-29 2016-06-15 贵州华安堂药业有限公司 一种烘干效果好的内循环热风烘干箱
CN106244978A (zh) * 2016-08-30 2016-12-21 张子青 一种气体渗碳装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010007128A (ja) * 2008-06-26 2010-01-14 Toyota Motor Corp 熱処理治具および熱処理装置
CN201713544U (zh) * 2010-04-28 2011-01-19 富威科技（吴江）有限公司 钟罩式强对流光亮退火炉
CN202936472U (zh) * 2012-12-03 2013-05-15 江苏金色工业炉制造有限公司 一种新型燃气加热箱式渗碳炉后室
CN205316921U (zh) * 2015-12-29 2016-06-15 贵州华安堂药业有限公司 一种烘干效果好的内循环热风烘干箱
CN106244978A (zh) * 2016-08-30 2016-12-21 张子青 一种气体渗碳装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914047A (zh) * 2018-08-21 2018-11-30 嘉兴市敬德机械制造有限公司 一种可移动的井式气体渗碳炉
CN108914047B (zh) * 2018-08-21 2023-09-05 嘉兴敬德机械科技有限公司 一种可移动的井式气体渗碳炉

Also Published As

Publication number Publication date
CN107447184B (zh) 2019-12-03

Similar Documents

Publication Publication Date Title
CN204455202U (zh) 一种电缆退火装置
CN104328249B (zh) 一种汽车全空心半轴的热处理方法
CN105441664B (zh) 用于对板材进行回火加热的明火回火炉及其加热方法
CN107447184A (zh) 一种低温气体渗碳炉
CN207050434U (zh) 一种网带式烧结炉
CN104561515A (zh) 连续式板坯加热炉及其加热方法
CN106637055B (zh) 一种低温气体渗氮炉
CN203837257U (zh) 三元体燃气热风炉
CN203999686U (zh) 一种能耗优化的等温正火炉
CN104178604A (zh) 一种能耗优化的等温正火炉
CN207811800U (zh) 一种一体式回火炉
CN210826252U (zh) 淬火炉热能利用系统
CN202272921U (zh) 箱式燃气烤蓝炉
CN207247884U (zh) 一种两步法q&p工艺盐浴炉
CN206279248U (zh) 均匀加热式低温炉
CN101812573B (zh) 一种燃气加热多用辊底炉
CN105063314B (zh) 一种高效燃气式步进炉
CN201574181U (zh) 燃气加热多用辊底炉
CN203653623U (zh) 一种防腐蚀式抽真空机的监控操作高温炉
US2432038A (en) Air-heating furnace
CN207512260U (zh) 一种用于磷化处理设备的加热炉
CN109387080A (zh) 一种网带式烧结炉
CN208104469U (zh) 一种一体式回火炉的热量循环装置
CN210826271U (zh) 淬火回火楼炉
CN206418159U (zh) 一种新型退火炉

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20191031

Address after: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Qingdao City, Shandong Province

Applicant after: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute

Address before: 266000 South Head of Huiying Street, Jiaozhou Economic and Technological Development Zone, Qingdao City, Shandong Province

Applicant before: Qingdao Branch of General Research Institute of Mechanical Science

GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 266000 south head of Huiying street, Jiaozhou economic and Technological Development Zone, Qingdao City, Shandong Province

Patentee after: China National Academy of Machinery Group Qingdao Branch Co.,Ltd.

Address before: 266000 south head of Huiying street, Jiaozhou economic and Technological Development Zone, Qingdao City, Shandong Province

Patentee before: Qingdao Branch Co., Ltd. of Mechanical Science Research Institute