CN104117825A - Method for manufacturing ring gauge with GCr15 as base material - Google Patents
Method for manufacturing ring gauge with GCr15 as base material Download PDFInfo
- Publication number
- CN104117825A CN104117825A CN201410355080.2A CN201410355080A CN104117825A CN 104117825 A CN104117825 A CN 104117825A CN 201410355080 A CN201410355080 A CN 201410355080A CN 104117825 A CN104117825 A CN 104117825A
- Authority
- CN
- China
- Prior art keywords
- gcr15
- temperature
- base material
- ring gauge
- phosphating
- 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.)
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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
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- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/34—Ring or other apertured gauges, e.g. "go/no-go" gauge
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a method for manufacturing a ring gauge with the GCr15 as the base material. The method includes the step of blank blanking, the step of inner circle and outer circle machining, the step of heat treatment, the step of end face machining and the step of inner and outer circle accurate grinding in sequence. The blank is made of the GCr15. The step of heat treatment includes high-temperature quenching and low-temperature tempering in sequence, the temperature of high-temperature quenching is any numerical value from 850 DEG C to 875 DEG C, and the high-temperature quenching time is not smaller than 2 h. The tempering temperature of low-temperature tempering is any numerical value from 165 DEG C to 175 DEG C, and the time of low-temperature tempering is not smaller than 3 h. The step of forging exists between the step of blank blanking and the step of inner circle and outer circle machining. According to the technology, the ring gauge which is longer in service life can be obtained, the detection cost of a piston ring can be easily reduced, and the detection precision and reliability of the piston ring can be easily improved.
Description
Technical field
The present invention relates to the manufacturing process for the measurer of size detection, particularly relating to a kind of GCr15 of employing is the ring gauge manufacture method of base material.
Background technology
Piston ring is as one of vital part in engine, and the quality of performance and quality directly affects the every technical-economic index of engine, and wherein the end-gaps of piston ring is one of important technological parameters affecting engine sealing property.Because dissimilar and engine structure are about 0.3% to 1.8% of air inflow by the air leakage of piston ring end gap clearance, in order to reduce air leakage, just must reduce the end-gaps of piston ring, in existing standard, general provision end-gaps greatest limit tolerance is 0.3mm as far as possible.Along with improving constantly of engine performance, as at constantly ripe supercharger h type engine h of technology in recent years, requirement to piston ring is more and more higher, if the end-gaps tolerance of some high-power Piston Ring for Auto Diesel Engine is only 0.1mm, this just makes piston ring in production and use procedure, and it is particularly important that the quality to piston ring and size Control seem.In prior art, be ring gauge for the critical piece of piston ring size detection, start to the whole process of product inspection from piston ring copying, the kind of the operation that ring gauge uses and the specification of required ring gauge, do not have his measurer can be by comparison, good ring gauge quality be the solid foundation that piston ring end gap clearance deviation ensures.
Summary of the invention
For above-mentioned for ensureing piston ring end gap clearance deviation, the problem that good ring gauge quality is its solid foundation, the invention provides a kind of GCr15 of employing is the ring gauge manufacture method of base material.
For the problems referred to above, the ring gauge manufacture method that employing GCr15 provided by the invention is base material reaches goal of the invention by following technical essential: adopt the ring gauge manufacture method that GCr15 is base material, comprise blank blanking in sequence, inner circle and Excircle machining, heat treatment, end face processing and inside and outside circle fine grinding, the material of described blank is GCr15, described heat treatment comprises quench hot and lonneal in sequence, the temperature of described quench hot is any number in 850 DEG C to 875 DEG C, the quench hot time is not less than 2h, the temperature of described lonneal is any number in 165 DEG C to 175 DEG C, the lonneal time is not less than 3h, between described blank blanking and inner circle and Excircle machining operation, also comprise and forge step.
Further technical scheme is:
Described inside and outside circle fine grinding step subsequent also comprises phosphatization treatment step.
Described phosphatization treatment step is to be 1:(9-10 by the inside and outside circle ratio that the product that obtains in step is placed in solution free acidity and total acidity of polishing) Phosphating Solution, the temperature of described Phosphating Solution is at 60 DEG C within the scope of 70 DEG C, phosphating time is 13 to 20min.
Described phosphatization treatment step is to be 1:(10-12 by the inside and outside circle ratio that the product that obtains in step is placed in solution free acidity and total acidity of polishing) Phosphating Solution, the temperature of described Phosphating Solution is at 50 DEG C within the scope of 60 DEG C, phosphating time is 8 to 15min.
In described Phosphating Solution, go back Phosphating Accelerant.
Described Phosphating Accelerant is azanol.
The present invention has following beneficial effect:
Ring gauge manufacturing approach craft provided by the invention is simple, by choosing specific quench hot, low tempering temperatures and time, and arranged and forge step before heat treatment, first loosen by the as cast condition forging in step elimination blank, even slag inclusion, the defects such as pore, be convenient to make form in blank complete metal streamline simultaneously, by follow-up heat treatment, can make the case hardness of product higher than 65HRC, be at least 4 times of ring gauge life-span that existing employing 45# steel or 40Gr obtain as base material the service life that makes to manufacture by GCr15 the ring gauge forming, and material and manufacturing cost are only 2.5 times of prior art, more than be arranged so that the present invention is not only beneficial to the testing cost of piston ring, also help accuracy of detection and the reliability of piston ring.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples.
Embodiment 1:
Adopt the ring gauge manufacture method that GCr15 is base material, comprise blank blanking in sequence, inner circle and Excircle machining, heat treatment, end face processing and inside and outside circle fine grinding, the material of described blank is GCr15, described heat treatment comprises quench hot and lonneal in sequence, the temperature of described quench hot is any number in 850 DEG C to 875 DEG C, the quench hot time is not less than 2h, the temperature of described lonneal is any number in 165 DEG C to 175 DEG C, the lonneal time is not less than 3h, between described blank blanking and inner circle and Excircle machining operation, also comprise and forge step.
Ring gauge manufacturing approach craft provided by the invention is simple, by choosing specific quench hot, low tempering temperatures and time, and arranged and forge step before heat treatment, first loosen by the as cast condition forging in step elimination blank, even slag inclusion, the defects such as pore, be convenient to make form in blank complete metal streamline simultaneously, by follow-up heat treatment, can make the case hardness of product higher than 65HRC, be at least 4 times of ring gauge life-span that existing employing 45# steel or 40Gr obtain as base material the service life that makes to manufacture by GCr15 the ring gauge forming, and material and manufacturing cost are only 2.5 times of prior art, more than be arranged so that the present invention is not only beneficial to the testing cost of piston ring, also help accuracy of detection and the reliability of piston ring.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, for making to form anti-attrition layer and the anticorrosive coat with self-lubricating property in the outside of ring gauge, further to ensure the service life of the ring gauge that the present invention obtains, described inside and outside circle fine grinding step subsequent also comprises phosphatization treatment step.
Described phosphatization treatment step is to be 1:(9-10 by the inside and outside circle ratio that the product that obtains in step is placed in solution free acidity and total acidity of polishing) Phosphating Solution, the temperature of described Phosphating Solution is at 60 DEG C within the scope of 70 DEG C, phosphating time is 13 to 20min.
Described phosphatization treatment step is to be 1:(10-12 by the inside and outside circle ratio that the product that obtains in step is placed in solution free acidity and total acidity of polishing) Phosphating Solution, the temperature of described Phosphating Solution is at 50 DEG C within the scope of 60 DEG C, phosphating time is 8 to 15min.
For strengthening the effect of phosphatization step, be convenient to obtain darker phosphate coating, in described Phosphating Solution, go back Phosphating Accelerant.
For simplifying the technology controlling and process of phosphatization step and avoiding promoter to environment, described Phosphating Accelerant is azanol.
Above content is the further description of the present invention being done in conjunction with concrete preferred embodiment, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other embodiments that draw under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (6)
1. adopt the ring gauge manufacture method that GCr15 is base material, comprise blank blanking in sequence, inner circle and Excircle machining, heat treatment, end face processing and inside and outside circle fine grinding, it is characterized in that, the material of described blank is GCr15, described heat treatment comprises quench hot and lonneal in sequence, the temperature of described quench hot is any number in 850 DEG C to 875 DEG C, the quench hot time is not less than 2h, the temperature of described lonneal is any number in 165 DEG C to 175 DEG C, the lonneal time is not less than 3h, between described blank blanking and inner circle and Excircle machining operation, also comprise and forge step.
2. the ring gauge manufacture method that employing GCr15 according to claim 1 is base material, is characterized in that, described inside and outside circle fine grinding step subsequent also comprises phosphatization treatment step.
3. the ring gauge manufacture method that employing GCr15 according to claim 2 is base material, it is characterized in that, described phosphatization treatment step is to be 1:(9-10 by the inside and outside circle ratio that the product that obtains in step is placed in solution free acidity and total acidity of polishing) Phosphating Solution, the temperature of described Phosphating Solution is at 60 DEG C within the scope of 70 DEG C, and phosphating time is 13 to 20min.
4. the ring gauge manufacture method that employing GCr15 according to claim 2 is base material, it is characterized in that, described phosphatization treatment step is to be 1:(10-12 by the inside and outside circle ratio that the product that obtains in step is placed in solution free acidity and total acidity of polishing) Phosphating Solution, the temperature of described Phosphating Solution is at 50 DEG C within the scope of 60 DEG C, and phosphating time is 8 to 15min.
5. according to the ring gauge manufacture method that in claim 3 or 4, the employing GCr15 described in any one is base material, it is characterized in that Phosphating Accelerant also in described Phosphating Solution.
6. the ring gauge manufacture method that employing GCr15 according to claim 5 is base material, is characterized in that, described Phosphating Accelerant is azanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410355080.2A CN104117825A (en) | 2014-07-24 | 2014-07-24 | Method for manufacturing ring gauge with GCr15 as base material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410355080.2A CN104117825A (en) | 2014-07-24 | 2014-07-24 | Method for manufacturing ring gauge with GCr15 as base material |
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| Publication Number | Publication Date |
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| CN104117825A true CN104117825A (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410355080.2A Pending CN104117825A (en) | 2014-07-24 | 2014-07-24 | Method for manufacturing ring gauge with GCr15 as base material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709427A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Low-cost, high-strength, high-toughness and high-abrasion resistance cold-working die steel and preparation method thereof |
| CN102443744A (en) * | 2011-12-05 | 2012-05-09 | 无锡市东方抗磨工程有限公司 | Interrupted quenching heat treatment process for high-medium carbon alloy steel |
| CN103350204A (en) * | 2013-06-07 | 2013-10-16 | 马鞍山市恒毅机械制造有限公司 | Composite centrifugal casting method of sealing ring |
| CN103484619A (en) * | 2013-09-26 | 2014-01-01 | 无锡阳工机械制造有限公司 | Heat treatment method of GCr15 bearing steel |
| CN103849738A (en) * | 2012-11-28 | 2014-06-11 | 大连乾宝铸铁有限公司 | Heat treatment process for powder metallurgical high-speed steel |
-
2014
- 2014-07-24 CN CN201410355080.2A patent/CN104117825A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709427A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Low-cost, high-strength, high-toughness and high-abrasion resistance cold-working die steel and preparation method thereof |
| CN102443744A (en) * | 2011-12-05 | 2012-05-09 | 无锡市东方抗磨工程有限公司 | Interrupted quenching heat treatment process for high-medium carbon alloy steel |
| CN103849738A (en) * | 2012-11-28 | 2014-06-11 | 大连乾宝铸铁有限公司 | Heat treatment process for powder metallurgical high-speed steel |
| CN103350204A (en) * | 2013-06-07 | 2013-10-16 | 马鞍山市恒毅机械制造有限公司 | Composite centrifugal casting method of sealing ring |
| CN103484619A (en) * | 2013-09-26 | 2014-01-01 | 无锡阳工机械制造有限公司 | Heat treatment method of GCr15 bearing steel |
Non-Patent Citations (1)
| Title |
|---|
| 南晖: "特殊螺纹环规的设计与制造", 《高压电器》 * |
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Application publication date: 20141029 |
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