CN105563042A - Machining method for hard-alloy sealing ring - Google Patents
Machining method for hard-alloy sealing ring Download PDFInfo
- Publication number
- CN105563042A CN105563042A CN201610060927.3A CN201610060927A CN105563042A CN 105563042 A CN105563042 A CN 105563042A CN 201610060927 A CN201610060927 A CN 201610060927A CN 105563042 A CN105563042 A CN 105563042A
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- China
- Prior art keywords
- sealing ring
- face
- workblank
- hard
- ground
- Prior art date
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Classifications
-
- 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
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a machining method for a hard-alloy sealing ring, and relates to the technical field of powder metallurgy. The machining method comprises the following steps that A, a sealing ring workblank formed by pressing hard alloy powder materials is put into sintering equipment to be sintered; B, the sealing ring workblank is subjected to quenching treatment and then is subjected to tempering treatment; C, the end face of the sealing ring workblank obtained through the step B is ground; and D, the end face of the sealing ring workblank obtained through the step C is ground and polished, and machining of the hard-alloy sealing ring is completed. Compared with the prior art, through the machining method, the sealing ring workblank is subjected to quenching treatment and tempering treatment, so that the end face of the sealing ring workblank is well ground; the ground end face of the sealing ring workblank is then ground and polished, so that the surface roughness of the end face meets the technical requirement.
Description
Technical field
The present invention relates to powder metallurgical technology, especially a kind of processing method of hard alloy seal ring.
Background technology
Hard alloy seal ring is for main component with the carbide micron powder of high rigidity refractory metal, with cobalt or nickel, molybdenum for binding agent, be pressed into annular, the powder metallurgy sealing ring sintered in vacuum drying oven or hydrogen reducing furnace, have that hardness is high, wear-resisting, intensity and a series of premium properties such as toughness is better, heat-resisting, corrosion-resistant, the surface roughness Ra of hard alloy seal ring end face requires to be 0.2 μm, and the end face of existing processing method processing rigid alloy seal ring is difficult to reach this surface roughness requirements.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of processing method of hard alloy seal ring, and the surface roughness that can solve existing processing method processing rigid alloy seal ring end face does not reach the problem of requirement.
In order to solve the problem, the technical solution used in the present invention is: the processing method of this hard alloy seal ring, comprises the following steps:
A, the sealing ring blank compressing with carbide alloy powder is put into agglomerating plant sinter;
B, described sealing ring blank is carried out Quenching Treatment, hardening heat 950 DEG C ~ 1000 DEG C; Then carry out temper, temperature 180 DEG C ~ 200 DEG C, be incubated 2 hours ~ 2.5 hours;
C, grinding is carried out to the end face of step B gained sealing ring blank, make its surface roughness Ra≤0.8 μm;
D, grinding and polishing is carried out to the end face of step C gained sealing ring blank, make its surface roughness Ra≤0.2 μm, namely complete the processing of this hard alloy seal ring.
In the processing method technical scheme of above-mentioned hard alloy seal ring, technical scheme can also be more specifically: described agglomerating plant is vacuum sintering furnace, and sintering temperature is 1200 DEG C ~ 1300 DEG C.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
Sealing ring blank is carried out Quenching Treatment and temper by the present invention, is beneficial to the grinding of sealing ring blank end face, and the sealing ring blank end face after grinding carries out grinding and polishing again, makes its surface roughness Ra≤0.2 μm, reaches technical requirement.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
A processing method for hard alloy seal ring, comprises the following steps:
A, the sealing ring blank compressing with carbide alloy powder is put into agglomerating plant sinter, sintering temperature is 1200 DEG C, and the agglomerating plant of the present embodiment is vacuum sintering furnace;
B, sealing ring blank is carried out Quenching Treatment, hardening heat 950 DEG C; Then carry out temper, temperature 180 DEG C, be incubated 2 hours;
C, adopt grinding machine to carry out grinding to the end face of step B gained sealing ring blank, make its surface roughness Ra≤0.8 μm;
D, adopt polishing machine to carry out grinding and polishing to the end face of step C gained sealing ring blank, make its surface roughness Ra≤0.2 μm, namely complete the processing of this hard alloy seal ring.
Sealing ring blank is carried out Quenching Treatment and temper by the present invention, is beneficial to the grinding of sealing ring blank end face, and the sealing ring blank end face after grinding carries out grinding and polishing again, makes its surface roughness Ra≤0.2 μm, reaches technical requirement.
Embodiment 2
A processing method for hard alloy seal ring, comprises the following steps:
A, the sealing ring blank compressing with carbide alloy powder is put into agglomerating plant sinter, sintering temperature is 1300 DEG C, and the agglomerating plant of the present embodiment is vacuum sintering furnace;
B, sealing ring blank is carried out Quenching Treatment, hardening heat 1000 DEG C; Then carry out temper, temperature 200 DEG C, be incubated 2.5 hours;
C, adopt grinding machine to carry out grinding to the end face of step B gained sealing ring blank, make its surface roughness Ra≤0.8 μm;
D, adopt polishing machine to carry out grinding and polishing to the end face of step C gained sealing ring blank, make its surface roughness Ra≤0.2 μm, namely complete the processing of this hard alloy seal ring.
Claims (2)
1. a processing method for hard alloy seal ring, is characterized in that comprising the following steps:
A, the sealing ring blank compressing with carbide alloy powder is put into agglomerating plant sinter;
B, described sealing ring blank is carried out Quenching Treatment, hardening heat 950 DEG C ~ 1000 DEG C; Then carry out temper, temperature 180 DEG C ~ 200 DEG C, be incubated 2 hours ~ 2.5 hours;
C, grinding is carried out to the end face of step B gained sealing ring blank, make its surface roughness Ra≤0.8 μm;
D, grinding and polishing is carried out to the end face of step C gained sealing ring blank, make its surface roughness Ra≤0.2 μm, namely complete the processing of this hard alloy seal ring.
2. the processing method of hard alloy seal ring according to claim 1, is characterized in that: described agglomerating plant is vacuum sintering furnace, and sintering temperature is 1200 DEG C ~ 1300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610060927.3A CN105563042A (en) | 2016-01-29 | 2016-01-29 | Machining method for hard-alloy sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610060927.3A CN105563042A (en) | 2016-01-29 | 2016-01-29 | Machining method for hard-alloy sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105563042A true CN105563042A (en) | 2016-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610060927.3A Pending CN105563042A (en) | 2016-01-29 | 2016-01-29 | Machining method for hard-alloy sealing ring |
Country Status (1)
| Country | Link |
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| CN (1) | CN105563042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620820A (en) * | 2018-04-24 | 2018-10-09 | 哈尔滨汽轮机厂有限责任公司 | In a kind of steam turbine gas port sealing ring anti-deformation processing method is pressed into pressure outer shell |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3834003A (en) * | 1972-11-02 | 1974-09-10 | Airco Inc | Method of particle ring-rolling for making metal rings |
| CN2391056Y (en) * | 1998-04-17 | 2000-08-09 | 王建国 | Hard alloy sealing ring |
| US20030207142A1 (en) * | 2002-05-03 | 2003-11-06 | Honeywell International, Inc | Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors |
| CN101021268A (en) * | 2006-12-18 | 2007-08-22 | 宁波东联密封件有限公司 | Light hard alloy seal ring and producing method thereof |
| CN101050511A (en) * | 2007-05-18 | 2007-10-10 | 自贡硬质合金有限责任公司 | Vacuum heat treatment method for brazing sheet of hard alloy in low cobalt |
| CN102041423A (en) * | 2009-10-26 | 2011-05-04 | 四川中钨实业有限公司 | Lightweight microcrystalline cemented carbide sealing ring material and preparation method |
| CN102434665A (en) * | 2011-09-15 | 2012-05-02 | 上海高更高实业有限公司 | Light gradient hard-alloy sealing ring and manufacture method thereof |
| CN103817150A (en) * | 2014-02-26 | 2014-05-28 | 湖南天益高技术材料制造有限公司 | Gradient-structure hard alloy roll collar and manufacturing process thereof |
-
2016
- 2016-01-29 CN CN201610060927.3A patent/CN105563042A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3834003A (en) * | 1972-11-02 | 1974-09-10 | Airco Inc | Method of particle ring-rolling for making metal rings |
| CN2391056Y (en) * | 1998-04-17 | 2000-08-09 | 王建国 | Hard alloy sealing ring |
| US20030207142A1 (en) * | 2002-05-03 | 2003-11-06 | Honeywell International, Inc | Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors |
| CN101021268A (en) * | 2006-12-18 | 2007-08-22 | 宁波东联密封件有限公司 | Light hard alloy seal ring and producing method thereof |
| CN101050511A (en) * | 2007-05-18 | 2007-10-10 | 自贡硬质合金有限责任公司 | Vacuum heat treatment method for brazing sheet of hard alloy in low cobalt |
| CN102041423A (en) * | 2009-10-26 | 2011-05-04 | 四川中钨实业有限公司 | Lightweight microcrystalline cemented carbide sealing ring material and preparation method |
| CN102434665A (en) * | 2011-09-15 | 2012-05-02 | 上海高更高实业有限公司 | Light gradient hard-alloy sealing ring and manufacture method thereof |
| CN103817150A (en) * | 2014-02-26 | 2014-05-28 | 湖南天益高技术材料制造有限公司 | Gradient-structure hard alloy roll collar and manufacturing process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620820A (en) * | 2018-04-24 | 2018-10-09 | 哈尔滨汽轮机厂有限责任公司 | In a kind of steam turbine gas port sealing ring anti-deformation processing method is pressed into pressure outer shell |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160511 |
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| RJ01 | Rejection of invention patent application after publication |