CN105803303B - A kind of air-conditioning compressor cylinder set and preparation method thereof - Google Patents
A kind of air-conditioning compressor cylinder set and preparation method thereof Download PDFInfo
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- CN105803303B CN105803303B CN201610185608.5A CN201610185608A CN105803303B CN 105803303 B CN105803303 B CN 105803303B CN 201610185608 A CN201610185608 A CN 201610185608A CN 105803303 B CN105803303 B CN 105803303B
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- cylinder
- air
- conditioning compressor
- silicon
- iron liquid
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/126—Cylinder liners
Abstract
The invention belongs to cylinder sleeve technology field, and in particular to a kind of air-conditioning compressor cylinder set, the chemical composition of the cylinder jacket are counted as following weight percent：Carbon：3.0 ~ 3.5%, silicon：1.9 ~ 2.7%, 0 ＜ phosphorus ＜ 0.4%, 0 ＜ sulphur≤0.1%, manganese：0.7 ~ 1.2%, chromium：0.2 ~ 0.6%, surplus is iron.Cylinder jacket of the present invention passes through melting, casting and machining, carbon is based on A type graphite in the material of cylinder jacket of the present invention, matrix is based on fine pearlite, free ferrite≤5%, carbide content≤5%, iron phosphide eutectic ＜ 5%, tensile strength can reach more than 300MPa, hardness is more than 230HB, have the advantages that cost is low, hardness is high, tensile strength is high, cost-effective, function admirable, energy-conserving and environment-protective.
Description
Technical field
The invention belongs to cylinder sleeve technology field, and in particular to a kind of energy-saving type air conditioner compresser cylinder set and its preparation side
Method.
Background technology
With the continuous development of society, energy-saving and environmental protection highlight further, and air condition compressor technology is constantly being changed, major
One after another by after constant speed machine high energy efficiency, speed changing, frequency converting technology progressively shows for enterprise, and improving the supply of frequency conversion product turns into several
The common strategy of all compressor of air conditioner enterprises.Cylinder jacket is one of vital part of compressor of air conditioner, after cylinder liner abrasion
Compressor power consumption can be caused big, or even be difficult to normal work, therefore, it is necessary to the cylinder jacket that tensile strength is big, hardness is big to ensure
Compressor of air conditioner energy-saving and environmental protection.
The content of the invention
It is an object of the invention to provide a kind of energy-saving type air conditioner compresser cylinder set and preparation method thereof.
Based on above-mentioned purpose, this invention takes following technical scheme：
A kind of air-conditioning compressor cylinder set, the chemical composition of the cylinder jacket are counted as following weight percent：Carbon（C）：3.0
~ 3.5%, silicon（Si）：1.9 ~ 2.7%, 0 ＜ phosphorus（P）＜ 0.4%, 0 ＜ sulphur（S）≤ 0.1%, manganese（Mn）：0.7 ~ 1.2%, chromium（Cr）：
0.2 ~ 0.6%, surplus is iron（Fe）.
The preparation method of above-mentioned air-conditioning compressor cylinder set, comprises the following steps：
（1）Raw material is subjected to dispensing in proportion, iron liquid is obtained with medium-frequency induction furnace melting, it is 1500 to control smelting temperature
DEG C ~ 1550 DEG C, following current inoculation twice is carried out to iron liquid before casting, inoculation uses silicon titanate innoculant twice, and often
The addition of secondary silicon titanate innoculant is the 0.3% ~ 0.5% of iron liquid quality；
（2）With water-cooled metal mould wet coating material centrifugal casting technique prepare cylinder sleeve cast part, iron liquid cast temperature be 1300 DEG C ~
1370℃；
（3）To step（2）Gained cylinder sleeve cast part carries out endoporus, cylindrical machining, and concrete technology flow process passes through successively
Cross slightly cut, slightly hinge, it is rough turn, repair, stress relief annealing, finish ream, the thick top gem of a girdle-pendant, smart car, milling, the smart top gem of a girdle-pendant, centreless cylindrical grinding, produce.
Preferably, step（1）The granularity for the silicon titanate innoculant that middle first time adds is 1.0 ~ 1.8mm, second of addition
The granularity of silicon titanate innoculant is 0.6 ~ 1.0mm.
Preferably, step（2）Middle coating uses common silica flour type wet coating material, 0.5~0.8mm of paint thickness, centrifuge
1200 ~ 1500 revs/min of rotating speed, casting mould preheating temperature are 300 DEG C ~ 350 DEG C, and 700 DEG C ~ 750 DEG C go out cylinder natural cooling.
Preferably, finish ream, smart car and smart top gem of a girdle-pendant process use Full-automatic numerical-control lathe, centreless cylindrical grinding uses high-precision nothing
Core grinding machine.
For carbon based on A type graphite, length is ASTM4~6 grade in the material of cylinder jacket of the present invention, there is less Type B stone
Ink is present, and total amount≤10% of D type+E type graphite, matrix is based on fine pearlite, free ferrite≤5%, carbonization
Thing content≤5%, and distribution is not reticulated；Iron phosphide eutectic ＜ 5%, and be evenly distributed, it is netted without continuing.The cylinder jacket tensile strength can
Reach more than 300MPa, hardness is more than 230HB, and its preparation process had both reduced the labor intensity of worker, improves processing essence again
Degree, efficiency, have the advantages that cost is low, hardness is high, tensile strength is high, cost-effective, function admirable, energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is the metallograph of air-conditioning compressor cylinder cover material described in embodiment 1.
Embodiment
The present invention is described in further detail below by way of preferred embodiment, but protection scope of the present invention is not limited to
In this.
Embodiment 1
A kind of energy-saving type air conditioner compresser cylinder set, its chemical composition are counted as following weight percent（%）：C：3.2, Si：
2.0, P：0.2, S：0.04, Mn：0.8, Cr：0.4, surplus Fe.
The preparation method of above-mentioned energy-saving type air conditioner compresser cylinder set, comprises the following steps：
（1）Raw material is subjected to dispensing in proportion, iron liquid is obtained with medium-frequency induction furnace melting, it is 1500 to control smelting temperature
DEG C ~ 1550 DEG C, following current inoculation twice is carried out to iron liquid before casting, the inovulant of inoculation is bred using silicon barium twice
Agent, and the addition of silicon titanate innoculant is the 0.3% of iron liquid quality every time；The granularity of the silicon titanate innoculant of addition is for the first time
1.0mm, the granularity of second of silicon titanate innoculant added is 0.6mm；
（2）With water-cooled metal mould wet coating material centrifugal casting technique prepare cylinder sleeve cast part, iron liquid cast temperature be 1300 DEG C ~
1370℃；Coating uses common silica flour type wet coating material, paint thickness 0.5mm, 1200 revs/min of centrifuge speed, casting mould
Preheating temperature is 300 DEG C, and 700 DEG C go out cylinder natural cooling；
（3）To step（2）Gained cylinder sleeve cast part carries out endoporus, cylindrical machining, and technological process is as follows：
Slightly cut → slightly cut with scissors → rough turn cylindrical → repair → stress relief annealing → of endoporus and finish ream endoporus → thick top gem of a girdle-pendant endoporus → smart car
Cylindrical → smart car support shoulder → milling 1 → milling of car car 2 → smart top gem of a girdle-pendant endoporus → centreless cylindrical grinding；
Wherein, finish ream, smart car and smart top gem of a girdle-pendant process use Full-automatic numerical-control lathe, centreless cylindrical grinding uses high-precision centreless
Grinding machine, that is, obtain described cylinder jacket.
The metallograph of gained cylinder jacket is as shown in figure 1, by Fig. 1（a）As can be seen that in material graphite using A type graphite as
Main, length is ASTM4~6 grade, with the presence of less b type eraphite, total amount≤10% of D type+E type graphite；In Fig. 1（b）And（c）Point
The metallograph of 100 times and 500 times Wei not amplified, there it can be seen that matrix, based on fine pearlite, free iron is plain
Body≤5%, carbide content≤5%, and distribution is not reticulated, and iron phosphide eutectic ＜ 5%, it is evenly distributed, it is netted without continuing.
The hardness 242HRB of gained cylinder jacket, tensile strength are about 310MPa.
Embodiment 2
One kind energy-conservation lightweight helicla flute cast-in cylinder jacket, its chemical composition are counted as following weight percent（%）：C：
3.4, Si：2.5, P：0.3, S：0.08, Mn：1.0, Cr：0.5, surplus Fe.
The preparation method of above-mentioned energy-conservation lightweight helicla flute cast-in cylinder jacket, comprises the following steps：
The preparation method of above-mentioned energy-saving type air conditioner compresser cylinder set, comprises the following steps：
（1）Raw material is subjected to dispensing in proportion, iron liquid is obtained with medium-frequency induction furnace melting, it is 1500 to control smelting temperature
DEG C ~ 1550 DEG C, following current inoculation twice is carried out to iron liquid before casting, the inovulant of inoculation is pregnant using silicon barium group twice
Agent is educated, and the addition of silicon titanate innoculant is the 0.4% of iron liquid quality every time；The granularity of the silicon titanate innoculant added for the first time
For 1.6mm, the granularity of second of silicon titanate innoculant added is 0.9mm；
（2）With water-cooled metal mould wet coating material centrifugal casting technique prepare cylinder sleeve cast part, iron liquid cast temperature be 1300 DEG C ~
1370℃；Coating uses common silica flour type wet coating material, paint thickness 0.8mm, 1300 revs/min of centrifuge speed, casting mould
Preheating temperature is 350 DEG C, and 750 DEG C go out cylinder natural cooling；
（3）To step（2）Gained cylinder sleeve cast part carries out endoporus, cylindrical machining, and technological process is as follows：
Slightly cut → slightly cut with scissors → rough turn cylindrical → repair → stress relief annealing → of endoporus and finish ream endoporus → thick top gem of a girdle-pendant endoporus → smart car
Cylindrical → smart car support shoulder → milling 1 → milling of car car 2 → smart top gem of a girdle-pendant endoporus → centreless cylindrical grinding；
Wherein, finish ream, smart car and smart top gem of a girdle-pendant process use Full-automatic numerical-control lathe, centreless cylindrical grinding uses high-precision centreless
Grinding machine, that is, obtain described cylinder jacket.
The hardness 240HRB of gained cylinder jacket, tensile strength about 315MPa.
Embodiment 3
One kind energy-conservation lightweight helicla flute cast-in cylinder jacket, its chemical composition are counted as following weight percent（%）：C：3,
Si：2.2, P：0.1, S：0.05, Mn：0.7, Cr：0.2, surplus Fe.
The preparation method of above-mentioned energy-saving type air conditioner compresser cylinder set, comprises the following steps：
（1）Raw material is subjected to dispensing in proportion, iron liquid is obtained with medium-frequency induction furnace melting, it is 1500 to control smelting temperature
DEG C ~ 1550 DEG C, following current inoculation twice is carried out to iron liquid before casting, the inovulant of inoculation is pregnant using silicon barium group twice
Agent is educated, and the addition of silicon titanate innoculant is the 0.3% of iron liquid quality every time；The granularity of the silicon titanate innoculant added for the first time
For 1.4mm, the granularity of second of silicon titanate innoculant added is 0.8mm；
（2）With water-cooled metal mould wet coating material centrifugal casting technique prepare cylinder sleeve cast part, iron liquid cast temperature be 1300 DEG C ~
1370℃；Coating uses common silica flour type wet coating material, paint thickness 0.6mm, 1500 revs/min of centrifuge speed, casting mould
Preheating temperature is 300 DEG C, and 700 DEG C go out cylinder natural cooling；
（3）To step（2）Gained cylinder sleeve cast part carries out endoporus, cylindrical machining, and technological process is as follows：
Slightly cut → slightly cut with scissors → rough turn cylindrical → repair → stress relief annealing → of endoporus and finish ream endoporus → thick top gem of a girdle-pendant endoporus → smart car
Cylindrical → smart car support shoulder → milling 1 → milling of car car 2 → smart top gem of a girdle-pendant endoporus → centreless cylindrical grinding；
Wherein, finish ream, smart car and smart top gem of a girdle-pendant process use Full-automatic numerical-control lathe, centreless cylindrical grinding uses high-precision centreless
Grinding machine, that is, obtain described cylinder jacket.
The hardness 245HRB of gained cylinder jacket, tensile strength about 320MPa.
Claims (3)
1. a kind of air-conditioning compressor cylinder set, it is characterised in that the chemical composition of the cylinder jacket is counted as following weight percent：
Carbon：3.0 ~ 3.5%, silicon：1.9 ~ 2.7%, 0 ＜ phosphorus ＜ 0.4%, 0 ＜ sulphur≤0.1%, manganese：0.7 ~ 1.2%, chromium：0.2 ~ 0.6%, surplus
For iron；
The preparation method of the air-conditioning compressor cylinder set, comprises the following steps：
（1）Raw material is subjected to dispensing in proportion, melting obtains iron liquid, and it is 1500 DEG C ~ 1550 DEG C to control smelting temperature, right before casting
Iron liquid carries out inoculation twice, and inoculation uses silicon titanate innoculant twice, and the addition of each silicon titanate innoculant is equal
For the 0.3% ~ 0.5% of iron liquid quality；
（2）Cylinder sleeve cast part is prepared with water-cooled metal mould wet coating material centrifugal casting technique, iron liquid cast temperature is 1300 DEG C ~ 1370
℃；
（3）To step（2）Gained cylinder sleeve cast part carries out endoporus, cylindrical machining, produces.
2. air-conditioning compressor cylinder set according to claim 1, it is characterised in that：Step（1）The silicon that middle first time adds
The granularity of barium inovulant is 1.0 ~ 1.8mm, and the granularity of second of silicon titanate innoculant added is 0.6 ~ 1.0mm.
3. air-conditioning compressor cylinder set according to claim 1, it is characterised in that：Step（2）Middle coating uses common stone
English powder type wet coating material, 0.5 ~ 0.8mm of paint thickness, 1200 ~ 1500 revs/min of centrifuge speed, casting mould preheating temperature are 300
DEG C ~ 350 DEG C, 700 DEG C ~ 750 DEG C go out cylinder natural cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610185608.5A CN105803303B (en) | 2016-03-29 | 2016-03-29 | A kind of air-conditioning compressor cylinder set and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610185608.5A CN105803303B (en) | 2016-03-29 | 2016-03-29 | A kind of air-conditioning compressor cylinder set and preparation method thereof |
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| CN105803303A CN105803303A (en) | 2016-07-27 |
| CN105803303B true CN105803303B (en) | 2017-11-14 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106676386A (en) * | 2016-12-16 | 2017-05-17 | 广西大学 | Thermal treatment method of cast iron cylinder sleeve |
| CN106801187A (en) * | 2016-12-16 | 2017-06-06 | 广西大学 | A kind of Cast iron liner and preparation method thereof |
| CN107855732B (en) * | 2017-10-27 | 2020-05-29 | 中原内配集团股份有限公司 | Preparation process of dry cylinder sleeve |
| CN107937799B (en) * | 2017-12-08 | 2019-09-27 | 中原内配集团股份有限公司 | A kind of burr cylinder jacket of centrifugal casting and preparation method thereof |
| CN112921233A (en) * | 2021-01-22 | 2021-06-08 | 河南科技大学 | Synthetic cast iron cylinder sleeve and preparation method thereof |
| CN113699435A (en) * | 2021-08-26 | 2021-11-26 | 中原内配集团安徽有限责任公司 | Wear-resistant high-strength cylinder sleeve and casting process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2761801A (en) * | 1952-10-11 | 1956-09-04 | Thompson Prod Inc | Gray cast iron and cylinder sleeve composed thereof |
| JPS5947023B2 (en) * | 1981-12-28 | 1984-11-16 | マツダ株式会社 | Centrifugal casting material with excellent peripheral machinability |
| JPH07145445A (en) * | 1993-11-24 | 1995-06-06 | Kubota Corp | Cast iron for cylinder liner |
| CN102234735A (en) * | 2010-04-27 | 2011-11-09 | 福建汇华集团东南汽车缸套有限公司 | Bainite cylinder liner |
| CN104117413A (en) * | 2014-07-11 | 2014-10-29 | 安徽省三方耐磨股份有限公司 | Wear-resistant casting ball used for ball mill |
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