CN102174936A - Slide block for rotary type compressor and manufacturing method thereof - Google Patents
Slide block for rotary type compressor and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a slide block for a rotary type compressor and a manufacturing method thereof. The slide block which meets the requirement is manufactured by the following steps of: performing pretreatment on GCr15 or GCr15SiMn bearing steel serving as a material; performing cold rolling; cutting; performing heat treatment and dimension stability treatment, and the like. In the invention, the material is selected reasonably, and a proper heat treatment process is achieved, so that the material selection range of the slide block for the rotary type compressor is enlarged, the content of alloy elements of the material is low, the requirement on rare elements is reduced, loads to the environment are reduced, and the raw material cost of the slide block is reduced simultaneously; and a manufacturing process is simple, manufacturing cost is low, and the obtained slide block has high hardness, high toughness and high abrasion resistance and can meet the using requirement of the conventional rotary type compressor.
Description
Technical field
The present invention relates to compressor field, particularly slide block of using of rotary compressor and preparation method thereof.
Technical background
Rotary compressor has obtained using widely because its efficient height, volume is little and lightweight characteristics.
The pump housing of existing rotary compressor is generally formed (as Fig. 1,2) by slide block 1, spring 2, piston 3, cylinder 4, bent axle 5 and metal (upper, important product-slide block 1 as compressor pump, under the Driving force of spring 2, its tip R face 11 fits tightly the formation friction pair with eccentric piston 3 external cylindrical surfaces that rotate of high speed all the time, this friction pair is the line contact, it is high that surface of contact is pressed, and this friction pair is in the critical lubricating status of few oil for a long time, causes its contact position very easily to wear and tear.Therefore, for choosing of sliding block material, need it to have high hardness, high tenacity, high-wear resistance and good processability.
For a long time, the sliding block material that rotary compressor uses mainly is Rapid Tool Steel and high chromium-stainless steel, and Cr, Mo, noble alloy elements such as V, W by high-load make slide block have higher hardness and wear resistance.Because the use of a large amount of noble alloy elements causes its cost of raw material height, the manufacturing process complexity.
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide the slide block that a kind of rotary compressor is used, the alloying element content of its material is low, has reduced the load and the cost of raw material to environment.
Another object of the present invention provides the preparation method of the slide block that above-mentioned rotary compressor uses, and its manufacturing process is simple, and is cheap for manufacturing cost.
The object of the present invention is achieved like this: a kind of rotary compressor manufacture method of slide block is characterized in that may further comprise the steps:
(1) raw material are chosen: choose GCr15 or GCr15SiMn Bearing Steel steel;
(2) pretreatment: raw material are carried out spheroidizing annealing handle;
(3) cold rolling: the cold rolling flat sheet material that is processed as of wide by slide block, highly required precision;
(4) cutting: press slide block length requirement cutting slide block, and mill out slide block slot;
(5) heat treatment and dimensional stability are handled: to the slide block behind the excision forming quench successively, deep cooling and tempering.Also comprise step (6) corase grind: grinding is carried out at each plane and R angle to the heat treatment rear slider; (7) correct grinding:
Each plane and the R angle of grinding rear slider are finish grinded, obtain satisfactory slide block.The GCr15 Bearing Steel of described step (1), calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.15～0.35%, Mn:0.25～0.45%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs.
The GCr15SiMn Bearing Steel of described step (1), calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.45～0.75%, Mn:0.95～1.25%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs.
The spheroidal annealing process of described step (2) is: 760～780 ℃ of furnace temperature, be incubated 2.5-3.5 hour, and slowly cool to the air cooling of coming out of the stove below 650 ℃ with stove then.
The quenching processing technology of described step (5) is: 870 ± 5 ℃ of furnace temperature, and carbon potential remains on 0.7-1%, and holding time is 45-80 minute.
The dimensional stability treatment process of described step (5) is: the workpiece after will quenching carries out the cryogenic treatment below-40 ℃, and holding time is 45-80 minute.
The temper technology of described step (5) is: 190 ± 10 ℃ of furnace temperature are incubated 100-140 minute.
The rotary compressor slide block that makes by above-mentioned manufacture method.
Present widely used sliding block material only is confined to Rapid Tool Steel and high chromium-stainless steel, therefore, has the problem that selection range is little, manufacture cost is high.The present invention is by reasonable material and appropriate heat treatment process, enlarged the selection range of rotary compressor with slide block, adopting GCr15 or GCr15SiMn Bearing Steel is material, and its alloying element content is low, has reduced the requirement to rare element, reduction is to the load of environment, the low simultaneously cost of raw material that has subtracted slide block, and manufacturing process is simple, cheap for manufacturing cost, have high hardness, high tenacity and high wear resistance and make slide block, can satisfy the usage requirement of present rotary compressor.
Description of drawings
Fig. 1 is the compressor pump sectional drawing of prior art;
Fig. 2 is the slide block stereogram of the embodiment of the invention;
Fig. 3 is the slide block carburized case metallographic microstructure (metallurgical microscope 500 *) of the embodiment of the invention 1;
Fig. 4 is the slide block core metallographic microstructure (scanning electron microscope 2000 *) of the embodiment of the invention 1.
Embodiment
The present invention is a kind of rotary compressor slide block, and as shown in Figure 2, its manufacture method may further comprise the steps:
(1) raw material are chosen: choose GCr15 or GCr15SiMn Bearing Steel steel, GCr15 Bearing Steel wherein, calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.15～0.35%, Mn:0.25～0.45%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs; The GCr15SiMn Bearing Steel, calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.45～0.75%, Mn:0.95～1.25%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs.
(2) pretreatment: raw material are carried out spheroidizing annealing handle, carry out tissue for following process and prepare.Spheroidal annealing process is: 760～780 ℃ of furnace temperature, be incubated 2.5-3.5 hour, and slowly cool to the air cooling of coming out of the stove below 650 ℃ with stove then.The purpose of spheroidizing annealing is to obtain equally distributed acinous pearlitic structrure, prepares for quenching provides favorable tissue simultaneously.
(3) cold rolling: the cold rolling flat sheet material that is processed as of wide by slide block, highly required precision;
(4) cutting: press slide block length requirement cutting slide block, and mill out slide block slot;
(5) heat treatment and dimensional stability are handled: to the slide block behind the excision forming quench successively, deep cooling and tempering.Above-mentioned slide block turns round under the critical lubricating status of high load and few oil for a long time, for guaranteeing that it has high hardness and good abrasion resistance, need slide block is carried out following heat treatment: quenching processing technology is: 870 ± 5 ℃ of furnace temperature, and carbon potential remains on 0.7-1%, and holding time is 45-80 minute.The dimensional stability treatment process is: the workpiece after will quenching carries out the cryogenic treatment below-40 ℃, and holding time is 45-80 minute, its objective is to guarantee that its dimensional stability satisfies usage requirement, and improves hardness.Temper technology is: 190 ± 10 ℃ of furnace temperature are incubated 100-140 minute.Through after the above-mentioned heat treatment, shoe surface generates the carburized case of thickness 40-120 μ m.The influence that parameters such as furnace temperature, carbon potential, holding time form carburized case: furnace temperature and carbon potential are high more, and holding time is long more, and the carburized case tissue that forms at workpiece surface is just thick more.But furnace temperature is too high or carbon potential causes carburizing too fast than big city, and formed carburized case organizes transition inhomogeneous, and with basal body binding force a little less than, ftracture in the junction during practical application, cause workpiece to lose efficacy in-service.Adopt above-mentioned technological effect the best after deliberation.
(6) corase grind: grinding is carried out at each plane and R angle to the heat treatment rear slider;
(7) correct grinding: each plane and the R angle of grinding rear slider are finish grinded, obtain satisfactory slide block.
The rotary compressor slide block that makes by above-mentioned manufacture method.
Below by embodiment and accompanying drawing the present invention is described in further detail.
Embodiment 1
(1) present embodiment is chosen the steel of GCr15 Bearing Steel chemical composition, calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.15～0.35%, Mn:0.25～0.45%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs
(2) before cold rolling, raw material are carried out spheroidizing annealing and handle, 770 ± 5 ℃ of annealing furnace temperature, insulation 3hr slowly cools to the air cooling of coming out of the stove below 650 ℃ with stove then.
(3) wide by slide block, highly required precision is carried out cold rolling processing, obtains flat sheet material;
(4) by the slide block length requirement flat sheet material is cut, and mill out slide block slot;
(5) to the slide block behind the excision forming quench successively, deep cooling and tempering.
1. Quenching Treatment: 870 ± 5 ℃ of furnace temperature, carbon potential remains on 0.8%, and holding time is that 60min carries out carburizing and quenching and handles;
2. cryogenic treatment: the workpiece after will quenching carries out the cryogenic treatment below-40 ℃, and holding time is 60min;
3. temper: 190 ± 10 ℃ of furnace temperature, insulation 120min.
Through after the above-mentioned heat treatment, shoe surface generates the above carburized case of thickness 40 μ m, makes shoe surface have high wear resistance.Slide block temper number scope is in HRC58～63, and microstructure is cryptocrystal, tiny acicular martensite and equally distributed tiny carbide and a spot of retained austenite after the slide block heat treatment, shown in Fig. 3,4.For the GCr5 steel, in the time of temperature range 820-850 ℃, can produce martensitic matrix, but hardness can not satisfy the usage requirement of present slide block through quenching; When rising to about 870 ℃, furnace temperature just can produce the carburizing effect.Carburized case is too thin, shoe surface hardness deficiency then, and wear resistance is relatively poor; Carburized case is too thick, can cause shoe surface fragility to strengthen, and carburized case and basal body binding force reduce, and reduces the reliability of the long-term use of slide block, so carburized layer thickness is advisable at 40-120 μ m, most preferably at 80-100 μ m.From test result, be can generate carburized case more than the 40 μ m in shoe surface at 0.8 o'clock at carbon potential, hardness and wear resistance are increased dramatically.
(6) corase grind: grinding is carried out at each plane and R angle to the heat treatment rear slider;
(7) correct grinding: each plane and the R angle of grinding rear slider are finish grinded;
By the above-mentioned steps operation, can make qualified rotary compressor slide block, meet of the usage requirement of present rotary compressor with slide block.
Comparative analysis:
(1) the sliding block material noble alloy constituent content of present embodiment is few, cheap (the expectation cost of raw material can be hanged down and be subtracted more than 20%); The composition contrast is as follows in detail.
(2) slide block that uses at present mostly is the SKH51 material, and its heat treatment engineering is+3 tempering of quenching, and heat treatment method of the present invention is quenching+deep cooling+tempering, and the process-cycle is short, and operation is also simpler than present volume production product.Simultaneously, because the alloying element content of material of the present invention is lower, its quenching temperature is also lower, and energy consumption is littler.Heat treatment process sees Table 1.
Table 1.
The existing relatively batch production technique of GCr15 steel heat treatment process man-hours requirement can shorten 220min in the present embodiment, and efficient improves near one times.
(1) chooses the steel of GCr15SiMn Bearing Steel chemical composition in the present embodiment, calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.45～0.75%, Mn:0.95～1.25%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs.
Step (2)-(7) make qualified rotary compressor slide block with embodiment 1, meet the usage requirement of present rotary compressor with slide block.
Claims (10)
1. a rotary compressor is characterized in that may further comprise the steps with the manufacture method of slide block:
(1) raw material are chosen: choose GCr15 or GCr15SiMn Bearing Steel steel;
(2) pretreatment: raw material are carried out spheroidizing annealing handle;
(3) cold rolling: the cold rolling flat sheet material that is processed as of wide by slide block, highly required precision;
(4) cutting: press slide block length requirement cutting slide block, and mill out slide block slot;
(5) heat treatment and dimensional stability are handled: to the slide block behind the excision forming quench successively, deep cooling and tempering.
2. the rotary compressor according to claim 1 manufacture method of slide block is characterized in that: also comprise step (6) corase grind: grinding is carried out at each plane and R angle to the heat treatment rear slider; (7) correct grinding: each plane and the R angle of grinding rear slider are finish grinded, obtain satisfactory slide block.
3. the rotary compressor according to claim 1 manufacture method of slide block, it is characterized in that: the GCr15 Bearing Steel of described step (1), calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.15～0.35%, Mn:0.25～0.45%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs.
4. the rotary compressor according to claim 1 manufacture method of slide block, it is characterized in that: the GCr15SiMn Bearing Steel of described step (1), calculate by mass percentage and contain following chemical composition: C:0.95～1.05%, Si:0.45～0.75%, Mn:0.95～1.25%, Cr:1.40～1.65%, S: P≤0.025%: Ni≤0.025%: Mo≤0.30% :≤0.10%, surplus is Fe and the normal impurity that occurs.
5. the rotary compressor according to claim 1 manufacture method of slide block, it is characterized in that: the spheroidal annealing process of described step (2) is: 760～780 ℃ of furnace temperature, be incubated 2.5-3.5 hour, slowly cool to the air cooling of coming out of the stove below 650 ℃ with stove then.
6. the rotary compressor according to claim 1 manufacture method of slide block, it is characterized in that: the quenching processing technology of described step (5) is: 870 ± 5 ℃ of furnace temperature, carbon potential remains on 0.7-1%, and holding time is 45-80 minute.
7. the rotary compressor according to claim 1 manufacture method of slide block, it is characterized in that: the dimensional stability treatment process of described step (5) is: the workpiece after will quenching carries out the cryogenic treatment below-40 ℃, and holding time is 45-80 minute.
8. the rotary compressor according to claim 1 manufacture method of slide block, it is characterized in that: the temper technology of described step (5) is: 190 ± 10 ℃ of furnace temperature are incubated 100-140 minute.
9. the rotary compressor slide block that makes by the described manufacture method of arbitrary claim among the claim 1-8.
10. rotary compressor slide block according to claim 9 is characterized in that: described shoe surface has the carburized case that thickness is 40-120 μ m.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345606A (en) * | 2011-10-19 | 2012-02-08 | 上海西工压缩机配件有限公司 | GCr15 compressor blade subjected to surface modification and manufacture process thereof |
| CN103206379A (en) * | 2012-01-16 | 2013-07-17 | 广东美芝制冷设备有限公司 | Sliding vane used in rotary compressor, and manufacturing method thereof |
| CN103320583A (en) * | 2012-03-21 | 2013-09-25 | 宝山钢铁股份有限公司 | Heat treatment technique for spheroidization annealing of GCr15 bearing steel |
| CN103572174A (en) * | 2013-08-02 | 2014-02-12 | 宁波甬微集团有限公司 | Compressor slip sheet and preparation method thereof |
| CN103691813A (en) * | 2013-12-12 | 2014-04-02 | 安徽力源数控刃模具制造有限公司 | Special bending machine mould for special R-type plate and processing method of part thereof |
| CN103898399A (en) * | 2014-04-15 | 2014-07-02 | 松下·万宝(广州)压缩机有限公司 | Highly wearable material and preparation method and application thereof |
| CN103924056A (en) * | 2014-04-24 | 2014-07-16 | 鑫光热处理工业(昆山)有限公司 | Quenching process for bearing steel shaft pin parts |
| CN105886895A (en) * | 2016-04-18 | 2016-08-24 | 宁波甬微集团有限公司 | Manufacturing method for sliding sheet of refrigeration compressor |
| CN106346196A (en) * | 2016-08-25 | 2017-01-25 | 柳州市国正机电物资有限责任公司 | Manufacturing method of compressor sliding vane |
| CN109971926A (en) * | 2019-03-05 | 2019-07-05 | 沈阳透平机械股份有限公司 | A kind of heat treatment method of compressor ultralow temperature high strength steel |
| CN112877598A (en) * | 2021-01-09 | 2021-06-01 | 宁波甬微集团有限公司 | Sliding vane of refrigeration compressor and manufacturing process thereof |
| CN113718174A (en) * | 2021-08-21 | 2021-11-30 | 钢铁研究总院 | Double-refined high-strength-toughness long-life medium-high carbon bearing steel and preparation method thereof |
| CN115558847A (en) * | 2022-09-22 | 2023-01-03 | 珠海格力电器股份有限公司 | Alloy material and preparation method thereof, sliding vane, compressor and air conditioner |
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Cited By (17)
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| CN102345606A (en) * | 2011-10-19 | 2012-02-08 | 上海西工压缩机配件有限公司 | GCr15 compressor blade subjected to surface modification and manufacture process thereof |
| CN103206379A (en) * | 2012-01-16 | 2013-07-17 | 广东美芝制冷设备有限公司 | Sliding vane used in rotary compressor, and manufacturing method thereof |
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| CN103320583A (en) * | 2012-03-21 | 2013-09-25 | 宝山钢铁股份有限公司 | Heat treatment technique for spheroidization annealing of GCr15 bearing steel |
| CN103572174A (en) * | 2013-08-02 | 2014-02-12 | 宁波甬微集团有限公司 | Compressor slip sheet and preparation method thereof |
| CN103691813B (en) * | 2013-12-12 | 2015-12-02 | 安徽力源数控刃模具制造有限公司 | The special bending machine die of a kind of special R based plate |
| CN103691813A (en) * | 2013-12-12 | 2014-04-02 | 安徽力源数控刃模具制造有限公司 | Special bending machine mould for special R-type plate and processing method of part thereof |
| CN103898399A (en) * | 2014-04-15 | 2014-07-02 | 松下·万宝(广州)压缩机有限公司 | Highly wearable material and preparation method and application thereof |
| CN103898399B (en) * | 2014-04-15 | 2016-04-27 | 松下·万宝(广州)压缩机有限公司 | A kind of high abrasion resisting material and manufacture method thereof and application |
| CN103924056A (en) * | 2014-04-24 | 2014-07-16 | 鑫光热处理工业(昆山)有限公司 | Quenching process for bearing steel shaft pin parts |
| CN105886895A (en) * | 2016-04-18 | 2016-08-24 | 宁波甬微集团有限公司 | Manufacturing method for sliding sheet of refrigeration compressor |
| CN106346196A (en) * | 2016-08-25 | 2017-01-25 | 柳州市国正机电物资有限责任公司 | Manufacturing method of compressor sliding vane |
| CN109971926A (en) * | 2019-03-05 | 2019-07-05 | 沈阳透平机械股份有限公司 | A kind of heat treatment method of compressor ultralow temperature high strength steel |
| CN112877598A (en) * | 2021-01-09 | 2021-06-01 | 宁波甬微集团有限公司 | Sliding vane of refrigeration compressor and manufacturing process thereof |
| CN113718174A (en) * | 2021-08-21 | 2021-11-30 | 钢铁研究总院 | Double-refined high-strength-toughness long-life medium-high carbon bearing steel and preparation method thereof |
| CN115558847A (en) * | 2022-09-22 | 2023-01-03 | 珠海格力电器股份有限公司 | Alloy material and preparation method thereof, sliding vane, compressor and air conditioner |
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