CN107984169A - A kind of spline housing processing technology - Google Patents
A kind of spline housing processing technology Download PDFInfo
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- CN107984169A CN107984169A CN201711180592.XA CN201711180592A CN107984169A CN 107984169 A CN107984169 A CN 107984169A CN 201711180592 A CN201711180592 A CN 201711180592A CN 107984169 A CN107984169 A CN 107984169A
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- CN
- China
- Prior art keywords
- spline housing
- spline
- carbon steel
- processing technology
- processing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/78—Combined heat-treatments not provided for above
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of spline housing processing technology of spline housing processing technique field, which comprises the following steps that：S1：Raw material melts：The carbon steel that carbon content is 0.2% is chosen, the carbon steel of selection is heated to 1450 degrees Celsius of 1500 degrees Celsius of progress melt process, the carbon steel solution of melting is kept the temperature 68 minutes；S2：Shaping：Anti-stick coating is uniformly coated with the inner wall of the mould for the spline housing for needing to make, by in the mould of the carbon steel solution melted in step S1 injection spline housing, carbon steel solution in the mould of spline housing is subjected to cooling treatment, the shaping casing that will be cooled to room temperature takes out, is spare；The spline housing processing technology, by the working process annealed, quenched and be tempered, so that the intensity and toughness of spline housing are higher, improve the quality and service life of product, by the way that internal spline lines is carried out two step working processes, the accuracy of processing is improved, step processing is avoided the occurrence of and produces situation about directly damaging.
Description
Technical field
The present invention relates to spline housing processing technique field, is specially a kind of spline housing processing technology.
Background technology
Spline connection is made of internal spline and external splines.Inside and outside spline is multiple tooth part, the flower on inner periphery
Key is internal spline, and the spline on outer cylinder surface is external splines, and spline connection is made of internal spline and external splines.Inside and outside flower
Key is multiple tooth part, and the spline on inner periphery is internal spline, and the spline on outer cylinder surface is external splines.It is aobvious
So, spline connection is development of the Flat dey joint in number, and spline, which when in use all has its toughness and hardness, to be required, existing
Spline housing fracture toughness and insufficient strength, be easy to cause key fracture or deformation situation, for this reason, we have proposed one kind flower
Key covers processing technology.
The content of the invention
It is an object of the invention to provide a kind of spline housing processing technology, to solve spline proposed in the above background technology
All have to its toughness and hardness when in use and require, existing spline housing fracture toughness and insufficient strength, be easy to cause key and break
Split or deform situation the problem of.
To achieve the above object, the present invention provides following technical solution：A kind of spline housing processing technology, spline housing processing
Technique comprises the following steps that：
S1：Raw material melts：Choose carbon content be 0.2% carbon steel, by the carbon steel of selection be heated to 1450 degrees Celsius-
1500 degrees Celsius of progress melt process, 6-8 minutes are kept the temperature by the carbon steel solution of melting；
S2：Shaping：Anti-stick coating is uniformly coated with the inner wall of the mould for the spline housing for needing to make, will be melted in step S1
In the mould of the carbon steel solution injection spline housing melted, carbon steel solution in the mould of spline housing is subjected to cooling treatment, will be cold
But the shaping casing to room temperature takes out, is spare；
S3：Annealing：Molding casing in step S2 is obtained and its appearance is made annealing treatment, by molding set
Pipe is progressively heated to more than sub-eutectoid steel 40 degrees Celsius -50 degrees Celsius, and the molding casing after heating is placed in thermostatic chamber and is delayed
Slow cool down, takes out after molding casing is cooled to room temperature from thermostatic chamber, reduces the hardness of casing, improves toughness；
S4：Cutting：Internal surface of sleeve pipe cutting escape first after annealing, is opened up by way of being stepped up depth
The lines of internal spline, the procedure of processing of next internal spline lines is carried out after a spline process finishing, until all lines are complete
Portion is cut out, and the lathe tool of lathe is exited from escape；
S5：Flank of tooth precision processing：Semi-finished product spline housing after step S4 cuttings is obtained, passes through the line of laser detection internal spline
Whether road meets using standard, after detection, the inadequate place of precision is carried out smart polishing so that the spline housing after processing can fit
For normal use, ultrasonic inspection is carried out, crackle has been detected whether, will have crackle is non-compliant to scrap；
S6：Carburization Treatment：Certified products in obtaining step S5 after precision processing, heat up, and it is Celsius that temperature rises to 900-950
Degree, case-carbonizing processing is carried out to the inside and outside wall of spline housing；
S7：Quenching, tempering：Spline housing after Carburization Treatment is subjected to quenching treatment, hardening heat is heated to 700-800 and takes the photograph
Family name's degree, carries out water hardening, when the spline housing after quenching is heated to 500-520 degrees Celsius and small constant temperature preservation 2, places afterwards
Slow cooling in atmosphere.
Preferably, for cooling treatment to wait cooling processing, the speed of cooling is 100 centigrade per minutes in the step S2.
Preferably, the annealing heating mode in the step S3 is electrical heating.
Preferably, the temperature of the thermostatic chamber in the step S3 is 50-60 degrees Celsius.
Preferably, the step S5 carries out synchronizing water cooling operation during the precision processing of surface.
Preferably, carburizing mode is to be heated up to 1000 degrees Celsius of air carburizing in the step S6.
Preferably, the depth of carburizing is 1.0 millimeters in the step S6.
Compared with prior art, the beneficial effects of the invention are as follows：The spline housing processing technology, by annealing, quenching and return
The working process of fire so that the intensity and toughness of spline housing are higher, improve the quality and service life of product, by by interior flower
Key lines carries out two step working processes, improves the accuracy of processing, avoids the occurrence of step processing and produces situation about directly damaging.
Brief description of the drawings
Fig. 1 is present invention process flow chart.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：A kind of spline housing processing technology, the spline housing processing technology
Comprise the following steps that：
S1：Raw material melts：Choose carbon content be 0.2% carbon steel, by the carbon steel of selection be heated to 1450 degrees Celsius-
1500 degrees Celsius of progress melt process, 6-8 minutes are kept the temperature by the carbon steel solution of melting；
S2：Shaping：Anti-stick coating is uniformly coated with the inner wall of the mould for the spline housing for needing to make, will be melted in step S1
In the mould of the carbon steel solution injection spline housing melted, carbon steel solution in the mould of spline housing is subjected to cooling treatment, cooling
Handle to wait cooling processing, the speed of cooling is 100 centigrade per minutes, and the shaping casing that will be cooled to room temperature takes out, is spare；
S3：Annealing：Molding casing in step S2 is obtained and its appearance is made annealing treatment, by molding set
Pipe is progressively heated to more than sub-eutectoid steel 40 degrees Celsius -50 degrees Celsius, and annealing heating mode is electrical heating, by the shaping after heating
Casing be placed in Slow cooling in thermostatic chamber, the temperature of thermostatic chamber is 50-60 degrees Celsius, after molding casing is cooled to room temperature
Taken out from thermostatic chamber, reduce the hardness of casing, improve toughness, be heated slowly to Ac3 (sub-eutectoid steel) or Ac1 (eutectoid steel or mistake
Eutectoid steel) more than 40 degrees Celsius -50 degrees Celsius, keep appropriate time, then Slow cooling get off.By occurring in heating process
Pearlite (or also ferrite or cementite of pro-eutectoid) be changed into austenite (first time phase transformation recrystallization) and cold
But the recrystallization of second time phase transformation in contrast to this occurred during, formation crystal grain is relatively thin, lamella is thicker, even tissue pearly-lustre
Body (or also pro-eutectoid ferrite or cementite)；
S4：Cutting：Internal surface of sleeve pipe cutting escape first after annealing, is opened up by way of being stepped up depth
The lines of internal spline, the procedure of processing of next internal spline lines is carried out after a spline process finishing, until all lines are complete
Portion is cut out, and the lathe tool of lathe is exited from escape；
S5：Flank of tooth precision processing：Semi-finished product spline housing after step S4 cuttings is obtained, passes through the line of laser detection internal spline
Whether road meets using standard, and after detection, the inadequate place of precision carried out smart polishing, and when surface precision processing synchronizes water cooling
Operation so that the spline housing after processing can be suitable for normal use, carry out ultrasonic inspection, detected whether crackle, split having
Line is non-compliant to be scrapped；
S6：Carburization Treatment：Certified products in obtaining step S5 after precision processing, heat up, and it is Celsius that temperature rises to 900-950
Degree, carries out the inside and outside wall of spline housing case-carbonizing processing, and carburizing mode is to be heated up to 1000 degrees Celsius of air carburizing, carburizing
Depth be 1.0 millimeters；
S7：Quenching, tempering：Spline housing after Carburization Treatment is subjected to quenching treatment, hardening heat is heated to 700-800 and takes the photograph
Family name's degree, carries out water hardening, is heated to critical-temperature Ac3 (sub-eutectoid steel) or Ac1 (hypereutectoid steel) temperatures above, keeps the temperature one section
Time, is allowed to all or part of austenitizing, is then as cold as below Ms soon (or near Ms with the cooling rate more than critical cooling rate
Isothermal) martensite (or bainite) transformation is carried out, the spline housing after quenching is heated to 500-520 degrees Celsius and constant temperature preserves 2
Hour, Slow cooling in atmosphere is placed afterwards.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
- A kind of 1. spline housing processing technology, it is characterised in that：The spline housing processing technology comprises the following steps that：S1：Raw material melts：The carbon steel that carbon content is 0.2% is chosen, the carbon steel of selection is heated to 1450 degree Celsius -1500 Degree Celsius melt process is carried out, the carbon steel solution of melting is kept the temperature 6-8 minutes；S2：Shaping：Anti-stick coating is uniformly coated with the inner wall of the mould for the spline housing for needing to make, by what is melted in step S1 In the mould of carbon steel solution injection spline housing, carbon steel solution in the mould of spline housing is subjected to cooling treatment, will be cooled to The shaping casing of room temperature takes out, is spare；S3：Annealing：Molding casing in step S2 is obtained and its appearance is made annealing treatment, by molding casing by Step is heated to more than sub-eutectoid steel 40 degrees Celsius -50 degrees Celsius, the molding casing after heating is placed in thermostatic chamber slowly cold But, taken out after molding casing is cooled to room temperature from thermostatic chamber, reduce the hardness of casing, improve toughness；S4：Cutting：Internal surface of sleeve pipe cutting escape first after annealing, opens up interior flower by way of being stepped up depth The lines of key, the procedure of processing of next internal spline lines is carried out after a spline process finishing, until all lines are all cut Cut out, the lathe tool of lathe is exited from escape；S5：Flank of tooth precision processing：Semi-finished product spline housing after step S4 cuttings is obtained, the lines by laser detection internal spline is It is no to meet using standard, after detection, the inadequate place of precision is subjected to smart polishing so that the spline housing after processing can be suitable for Normal use, carries out ultrasonic inspection, has detected whether crackle, will have crackle is non-compliant to scrap；S6：Carburization Treatment：Certified products in obtaining step S5 after precision processing, heat up, and temperature rises to 900-950 degrees Celsius, Case-carbonizing processing is carried out to the inside and outside wall of spline housing；S7：Quenching, tempering：Spline housing after Carburization Treatment is subjected to quenching treatment, it is Celsius that hardening heat is heated to 700-800 Degree, carries out water hardening, when the spline housing after quenching is heated to 500-520 degrees Celsius and small constant temperature preservation 2, is placed on afterwards Slow cooling in air.
- A kind of 2. spline housing processing technology according to claim 1, it is characterised in that：Cooling treatment in the step S2 To wait cooling processing, the speed of cooling is 100 centigrade per minutes.
- A kind of 3. spline housing processing technology according to claim 1, it is characterised in that：Annealing heating in the step S3 Mode is electrical heating.
- A kind of 4. spline housing processing technology according to claim 1, it is characterised in that：Thermostatic chamber in the step S3 Temperature is 50-60 degrees Celsius.
- A kind of 5. spline housing processing technology according to claim 1, it is characterised in that：The step S5 is carried out at the essence of surface Water cooling operation is synchronized during reason.
- A kind of 6. spline housing processing technology according to claim 1, it is characterised in that：Carburizing mode is in the step S6 It is heated up to 1000 degrees Celsius of air carburizing.
- A kind of 7. spline housing processing technology according to claim 1, it is characterised in that：The depth of carburizing in the step S6 For 1.0 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711180592.XA CN107984169A (en) | 2017-11-23 | 2017-11-23 | A kind of spline housing processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711180592.XA CN107984169A (en) | 2017-11-23 | 2017-11-23 | A kind of spline housing processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107984169A true CN107984169A (en) | 2018-05-04 |
Family
ID=62032149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711180592.XA Pending CN107984169A (en) | 2017-11-23 | 2017-11-23 | A kind of spline housing processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107984169A (en) |
-
2017
- 2017-11-23 CN CN201711180592.XA patent/CN107984169A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 湖南邵阳汽车保养厂热处理问答编写小组: "《热处理问答》", 30 June 1974, 机械工业出版社 * |
| 王建民等: "《机械工程材料》", 30 June 2016, 清华大学出版社 * |
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Application publication date: 20180504 |
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