CN104565210A - Chromizing chain pin shaft and manufacturing method - Google Patents
Chromizing chain pin shaft and manufacturing method Download PDFInfo
- Publication number
- CN104565210A CN104565210A CN201410819042.8A CN201410819042A CN104565210A CN 104565210 A CN104565210 A CN 104565210A CN 201410819042 A CN201410819042 A CN 201410819042A CN 104565210 A CN104565210 A CN 104565210A
- Authority
- CN
- China
- Prior art keywords
- bearing pin
- chromising
- chain hinge
- hinge pin
- mentioned
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a chromizing chain pin shaft which is heat resistant, abrasion resistant, antioxidant and corrosion resistant and a manufacturing method. The chain pin shaft is a GCr 15 pin shaft, and the surface layer of the GCr 15 pin shaft is a metallic cementing layer. The chromizing chain pin shaft has the advantage that the GCr 15 material is used for manufacturing the pin shaft, the metallic cementing is used for conducting chemical heat processing on the GCr 15 pin shaft, the heat resistant, abrasion resistant, antioxidant and corrosion resistant performances of the chain pin shaft are improved by several times, and the service life is prolonged by several times.
Description
Technical field
The present invention relates to one and there is heat-resisting, wear-resisting, anti-oxidant, corrosion resistant chromising chain hinge pin and preparation method, belong to chain hinge pin and manufacture field.
Background technology
CN101644308A, title " a kind of chain hinge pin and manufacture method thereof ", successively through cutting print, punching, cut-out, 2/4 take all of, 3/4 take all of, 4/4 take all of and full circle processing, and the jointed chain hinge pin of band obtaining rolling after intensive treatment, surface finishing and cleaning, this bearing pin is hollow structure, and seam crossing has at least one oil permeable hole.Its weak point: heat-resisting, wear-resisting, anti-oxidant, corrosion-resistant.
Summary of the invention
Purpose of design: avoid the weak point in background technology, if one has heat-resisting, wear-resisting, anti-oxidant, corrosion resistant chromising chain hinge pin and preparation method.
Design: in order to realize above-mentioned purpose of design.Chain hinge pin workpiece surface adopts the technological design of metallic cementation thermo-chemical treatment, is technical characteristics of the present invention.The object of such design is: infiltrated by metallic atom in the superficial layer of steel, and it can be the superficial layer alloying making bearing pin, makes bearing pin surface of the work have the characteristic of some steel alloy, special steel, as heat-resisting, wear-resisting, anti-oxidant, corrosion-resistant etc.The present invention adopts chromising to carry out chemical heat treatment process in chain hinge pin manufacture process, chromium metallic atom is made to infiltrate in bearing pin metal works top layer, be placed on containing infiltrating in the penetration enhancer of chromium metallic element by bearing pin, be heated to uniform temperature, after keeping appropriate time, the active atomic of the infiltration metallic element that penetration enhancer thermal decomposition produces just is adsorbed to bearing pin surface of the work, and diffuses into bearing pin workpiece surface, thus changes chemical composition, the structure and properties of bearing pin workpiece surface.
Technical scheme 1: a kind of chromising chain hinge pin, chain hinge pin is GCr15 bearing pin and GCr15 bearing pin superficial layer is metallic cementation layer.
Technical scheme 2: a kind of preparation method of chromising chain hinge pin, its feature: (1) GCr15 material makes bearing pin workpiece blank, the bearing pin workpiece then cutting required; (2) centreless grinding process equipment is adopted to process the bearing pin workpiece in above-mentioned (1); (3) adopt metallic cementation chemical heat treatment process, metallic cementation thermo-chemical treatment is carried out to the bearing pin in above-mentioned (2); (4) Q-tempering technique carries out Quench and temper process to the bearing pin in above-mentioned (3), and its hardening heat is 840-850 degree, and temperature is 180-190 degree; (5) adopt centreless grinding equipment to carry out super grinding to bearing pin in above-mentioned (4), the required precision after its super grinding reaches 2-4 micron; (6) centrifugal polishing machine equipment is adopted to carry out polishing to bearing pin in above-mentioned (5).
The present invention is compared with background technology, one is adopt GCr15 material to make bearing pin and adopt metallic cementation to carry out thermo-chemical treatment to GCr15 bearing pin, make chain hinge pin have heat-resisting, wear-resisting, anti-oxidant, the corrosion-resistant several times that obtain to improve, the service life of bearing pin is multiplied; Two is the shear strengths strengthening bearing pin; By the extruding elastic deformation of gear piece aperture, improve aperture fatigue strength, reduce the wearing and tearing in bearing pin and gear piece aperture, improve whole chain service life and static strength; Three is that bearing pin adopts GCr15 material surface metallic cementation intensive treatment, tensile strength is generally 6.0-7.0KN, can meet the demand of high speed variable load many impacts engine, the extruding elastic deformation of gear piece aperture completely, the friction pair formed with bearing pin improves fatigue strength, improves polishing machine.
Accompanying drawing explanation
Fig. 1 is the end face structure schematic diagram of chain hinge pin.
Detailed description of the invention
Embodiment 1: with reference to accompanying drawing 1.A kind of chromising chain hinge pin, chain hinge pin is GCr15 bearing pin 1 and GCr15 bearing pin superficial layer is metallic cementation layer 2.Described bearing pin tensile strength is 6.0-7.0KN.
Embodiment 2: on the basis of embodiment 1, described metallic cementation layer 2 is Chromizing Layer, and this Chromizing Layer has highly reliable heat-resisting, wear-resisting, anti-oxidant, rotproofness, can adapt to different surrounding mediums respectively, makes obtain the raising of several times the service life of chain hinge pin.
Embodiment 3: on the basis of above-described embodiment.A preparation method for chromising chain hinge pin, (1) GCr15 material makes bearing pin workpiece blank, the bearing pin workpiece then cutting required; (2) centreless grinding process equipment is adopted to process the bearing pin workpiece in above-mentioned (1); (3) adopt metallic cementation chemical heat treatment process, metallic cementation thermo-chemical treatment is carried out to the bearing pin in above-mentioned (2); (4) Q-tempering technique carries out Quench and temper process to the bearing pin in above-mentioned (3), and its hardening heat is 840-850 degree, and temperature is 180-190 degree; (5) adopt centreless grinding equipment to carry out super grinding to bearing pin in above-mentioned (4), the required precision after its super grinding reaches 2-4 micron; (6) centrifugal polishing machine equipment is adopted to carry out polishing to bearing pin in above-mentioned (5).Described chromising temperature 1000 ~ 1100 DEG C, temperature retention time is generally 10 hours.
It is to be understood that: although above-described embodiment to be contrasted detailed text description to mentality of designing of the present invention; but these text descriptions; just the simple text of mentality of designing of the present invention is described; instead of the restriction to mentality of designing of the present invention; any do not exceed mentality of designing of the present invention combination, increase or amendment, all fall within the scope of protection of the present invention.
Claims (6)
1. a chromising chain hinge pin, is characterized in that: chain hinge pin is GCr15 bearing pin and GCr15 bearing pin superficial layer is metallic cementation layer.
2. chromising chain hinge pin according to claim 1, is characterized in that: described metallic cementation layer is Chromizing Layer.
3. chromising chain hinge pin according to claim 1, is characterized in that: described bearing pin tensile strength is 6.0-7.0KN.
4. a preparation method for chromising chain hinge pin, its feature:
(1) GCr15 material makes bearing pin workpiece blank, the bearing pin workpiece then cutting required;
(2) centreless grinding process equipment is adopted to process the bearing pin workpiece in above-mentioned (1);
(3) adopt metallic cementation chemical heat treatment process, metallic cementation thermo-chemical treatment is carried out to the bearing pin in above-mentioned (2);
(4) Q-tempering technique carries out Quench and temper process to the bearing pin in above-mentioned (3), and its hardening heat is 840-850 degree, and temperature is 180-190 degree;
(5) adopt centreless grinding equipment to carry out super grinding to bearing pin in above-mentioned (4), the required precision after its super grinding reaches 2-4 micron;
(6) centrifugal polishing machine equipment is adopted to carry out polishing to bearing pin in above-mentioned (5).
5. the preparation method of chromising chain hinge pin according to claim 4, is characterized in that: described metallic cementation refers to chromising.
6. the preparation method of chromising chain hinge pin according to claim 4, is characterized in that: described chromising temperature 1000 ~ 1100 DEG C, temperature retention time is generally 4 ~ 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819042.8A CN104565210A (en) | 2014-12-25 | 2014-12-25 | Chromizing chain pin shaft and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819042.8A CN104565210A (en) | 2014-12-25 | 2014-12-25 | Chromizing chain pin shaft and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104565210A true CN104565210A (en) | 2015-04-29 |
Family
ID=53082006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410819042.8A Pending CN104565210A (en) | 2014-12-25 | 2014-12-25 | Chromizing chain pin shaft and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565210A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393302A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| CN1818140A (en) * | 2006-01-23 | 2006-08-16 | 陈治贵 | Surface enhancing and lubricating process for long-life bearing |
| CN1834269A (en) * | 2005-12-20 | 2006-09-20 | 人本集团有限公司 | Long Lifetine heat treatment technique of high-carbon chromium bearing collar |
| CN202418429U (en) * | 2012-01-05 | 2012-09-05 | 杭州临安力达机械有限责任公司 | Wear-resistant roller sleeve pin |
| CN102926832A (en) * | 2012-11-16 | 2013-02-13 | 杭州顺峰链业有限公司 | Timing chain of double VVT overhead camshaft engine for SUV and fabrication method |
-
2014
- 2014-12-25 CN CN201410819042.8A patent/CN104565210A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1393302A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| CN1834269A (en) * | 2005-12-20 | 2006-09-20 | 人本集团有限公司 | Long Lifetine heat treatment technique of high-carbon chromium bearing collar |
| CN1818140A (en) * | 2006-01-23 | 2006-08-16 | 陈治贵 | Surface enhancing and lubricating process for long-life bearing |
| CN202418429U (en) * | 2012-01-05 | 2012-09-05 | 杭州临安力达机械有限责任公司 | Wear-resistant roller sleeve pin |
| CN102926832A (en) * | 2012-11-16 | 2013-02-13 | 杭州顺峰链业有限公司 | Timing chain of double VVT overhead camshaft engine for SUV and fabrication method |
Non-Patent Citations (1)
| Title |
|---|
| 电子设备金属腐蚀与防护技术编写组: "《电子设备金属腐蚀与防护技术》", 29 February 1988 * |
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Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |