CN105880949A - Preparation method of high-strength outer ring for bearing of air conditioner - Google Patents
Preparation method of high-strength outer ring for bearing of air conditioner Download PDFInfo
- Publication number
- CN105880949A CN105880949A CN201610351806.4A CN201610351806A CN105880949A CN 105880949 A CN105880949 A CN 105880949A CN 201610351806 A CN201610351806 A CN 201610351806A CN 105880949 A CN105880949 A CN 105880949A
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- Prior art keywords
- percent
- outer ring
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- preparation
- high intensity
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Classifications
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- 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
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a preparation method of a high-strength outer ring for a bearing of an air conditioner. The preparation method of the high-strength outer ring for the bearing of the air conditioner comprises the following steps of a, casting a steel ingot, wherein the steel ingot is prepared from the following chemical components in percentages by weight: not less than 0.65 percent but not more than 0.8 percent of C, not less than 1.0 percent but not more than 1.3 percent of Si, not less than 0.5 percent but not more than 0.6 percent of Mn, not less than 0.05 percent but not more than 0.06 percent of Mo, not less than 0.005 percent but not more than 0.011 percent of P, not less than 0.005 percent but not more than 0.01 percent of S, not less than 1.4 percent but not more than 1.65 percent of Cr, not less than 0.08 percent but not more than 0.12 percent of Ti and the balance of iron and inevitable impurities; b, carrying out water cooling on a cast, carrying out phosphorization treatment on the cast through appearance acceptance after the water cooling, carrying out surface high-temperature phosphorization treatment on the cast, afterwards, drawing out a work piece, subsequently, straightening the work piece, correcting sizes, and rounding the work piece, so that a forging ratio is 4 to 5; c, heat treatment: carrying out surface controlled atmosphere heat treatment on the outer ring subjected to forging treatment; d, machining and shaping the outer ring; e, coarsely grinding double end faces; and f, milling the end faces. By using the preparation method of the high-strength outer ring for the bearing of the air conditioner, the mechanical properties of a product are further improved; and the integral mechanical strength of the outer ring and the abrasive resistance performance of a ball track are further increased.
Description
Technical field
The invention belongs to the manufacture field of air-conditioning axle sleeve, it is more particularly related to a kind of high intensity air-conditioning bearing
Outer coil preparation method.
Background technology
Bearing is a kind of important spare part in plant equipment in the present age.Its major function is to support machinery rotary body, reduces
Coefficient of friction in its motor process, and ensure its rotating accuracy.By the difference of motor element frictional property, bearing can be divided into rolling
Dynamic bearing and the big class of sliding bearing two.Wherein rolling bearing is the most normalized, seriation, but its radial direction compared with sliding bearing
Size, vibration and noise are relatively big, and price is the highest.Rolling bearing is typically by outer ring, inner ring, rolling element and retainer four part group
Become, be made up of outer ring, inner ring, rolling element, retainer, sealing, the big part of lubricating oil six strictly speaking.Mainly possesses outer ring, interior
Circle, rolling element just can mean rolling bearing surely.Require higher for outer ring mechanical strength and wearability.
Summary of the invention
It is an object of the present invention to provide a kind of high intensity air-conditioning bearing outer ring preparation method, the mechanical property making product is further
Improving, the wearability performance of outer ring overall mechanical strength and raceway improves further.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
A kind of high intensity air-conditioning bearing outer ring preparation method, comprises the following steps:
A, teeming, in steel ingot, chemical component weight percentage ratio is: 0.65%≤C≤0.8%, 1.0%≤Si≤
1.3%, 0.5%≤Mn≤0.6%, 0.05%≤Mo≤0.06%, 0.005%≤P≤0.011%, 0.005%≤S≤
0.01%, 1.4%≤Cr≤1.65%, 0.08%≤Ti≤0.12%, surplus is ferrum and inevitable impurity；
B, cast temperature control at 1100 DEG C～1200 DEG C, casting temperature air cooling to 400 DEG C～carry out water-cooled when 500 DEG C,
After outward appearance is checked and accepted, bonderizing is carried out, surface high-temp bonderizing: carry out at a temperature of 110-125 DEG C, phosphoric acid after water-cooled
The free acidity of saline solution is 1: 3-4 in the ratio of total acidity, and the process time is 50-60 minute, is then heated to 1100 DEG C
Within the temperature range of 1200 DEG C, then pulling out workpiece, alignment afterwards, correction size, full circle make forging ratio 4-5, to forge outer ring；
C, heat treatment
Outer ring after conducting forging processing is carried out surface Atmosphere controlling heat-treatment: Atmosphere controlling heat-treatment is in heat treated stove
Being passed through mixed gas, nitrogen intake is 125～145ml/min, and ethanol intake is 54～70ml/min, and propane intake exists
24～43ml/min, its furnace gas atmosphere composition weight portion scope control nitrogen content 45～55 parts, hydrogen content 25～28 parts,
Carbon dioxide content 10～12 parts；
D, machining shape: reduce allowance, prepare for mill processing；
E, corase grind Double End: use resin wheel to carry out grinding；
F, face machined flat: use resin wheel grinding, stock removal is less than corase grind processing.
Preferably, in steel ingot, chemical component weight percentage ratio is: 0.7%≤C≤0.75%, 1.1%≤Si≤1.2%,
0.55%≤Mn≤0.6%, 0.055%≤Mo≤0.06%, 0.005%≤P≤0.01%, 0.005%≤S≤0.08%,
1.5%≤Cr≤1.6%, 0.1%≤Ti≤0.11%, 0.1%≤Cu≤0.11%, surplus is ferrum and the most miscellaneous
Matter.
Further, in step e, resin wheel is made up of the raw material of following percentage by weight:
Preferably, in step e, resin wheel is made up of the raw material of following percentage by weight:
Preferably, carborundum granularity is 5 μm.
Preferably, in step f, the granularity of resin wheel is 50 degree.
The invention has the beneficial effects as follows:
The present invention, by controlling the chemical composition of steel ingot, through casting, heat treatment, machines, roughly grinds and grinds, and prepares height
Intensity air-conditioning bearing outer ring, mechanical property is improved further, has saved the resistance to of product materials, outer ring overall mechanical strength and raceway
Mill property performance improves further, improves the service life of product.
Detailed description of the invention
Hereinafter embodiments of the invention are described in detail, but what the present invention can be defined by the claims and cover
Multitude of different ways is implemented.
A kind of high intensity air-conditioning bearing outer ring preparation method, comprises the following steps:
A, teeming, in steel ingot, chemical component weight percentage ratio is: 0.7%≤C≤0.75%, 1.1%≤Si≤
1.2%, 0.55%≤Mn≤0.6%, 0.055%≤Mo≤0.06%, 0.005%≤P≤0.01%, 0.005%≤S≤
0.08%, 1.5%≤Cr≤1.6%, 0.1%≤Ti≤0.11%, 0.1%≤Cu≤0.11%, surplus is ferrum and can not keep away
The impurity exempted from；
B, cast temperature control at 1100 DEG C～1200 DEG C, casting temperature air cooling to 400 DEG C～carry out water-cooled when 500 DEG C,
After outward appearance is checked and accepted, bonderizing is carried out, surface high-temp bonderizing: carry out at a temperature of 110-125 DEG C, phosphoric acid after water-cooled
The free acidity of saline solution is 1: 3-4 in the ratio of total acidity, and the process time is 50-60 minute, is then heated to 1100 DEG C
Within the temperature range of 1200 DEG C, then pulling out workpiece, alignment afterwards, correction size, full circle make forging ratio 4-5, to forge outer ring；
C, heat treatment
Outer ring after conducting forging processing is carried out surface Atmosphere controlling heat-treatment: Atmosphere controlling heat-treatment is in heat treated stove
Being passed through mixed gas, nitrogen intake is 125～145ml/min, and ethanol intake is 54～70ml/min, and propane intake exists
24～43ml/min, its furnace gas atmosphere composition weight portion scope control nitrogen content 45～55 parts, hydrogen content 25～28 parts,
Carbon dioxide content 10～12 parts；
D, machining shape: reduce allowance, prepare for mill processing；
E, corase grind Double End: use resin wheel to carry out grinding；
F, face machined flat: using granularity is 50 degree of resin wheel grindings, stock removal is less than corase grind processing.
In step e, resin wheel is made up of the raw material of following percentage by weight:
Wherein, carborundum granularity is 5 μm.
The mechanics properties testing data of the present invention are as follows:
Tensile strength sigma b (MPa): >=50
Yield strength σ s (MPa): >=60
Contraction percentage of area ψ (%): >=57
Notched bar impact strength α kv (J/cm2): >=38.
Invention described above embodiment, is not intended that limiting the scope of the present invention, any in the present invention
Spirit and principle within amendment, equivalent and the improvement etc. made, should be included in the claim protection model of the present invention
Within enclosing.
Claims (6)
1. a high intensity air-conditioning bearing outer ring preparation method, it is characterised in that comprise the following steps:
A, teeming, in steel ingot, chemical component weight percentage ratio is: 0.65%≤C≤0.8%, 1.0%≤Si≤1.3%,
0.5%≤Mn≤0.6%, 0.05%≤Mo≤0.06%, 0.005%≤P≤0.011%, 0.005%≤S≤0.01%,
1.4%≤Cr≤1.65%, 0.08%≤Ti≤0.12%, surplus is ferrum and inevitable impurity；
B, cast temperature control at 1100 DEG C～1200 DEG C, casting temperature air cooling to 400 DEG C～carry out water-cooled, water-cooled when 500 DEG C
Bonderizing is carried out, surface high-temp bonderizing: carrying out at a temperature of 110-125 DEG C, phosphate is molten after checking and accepting by outward appearance
The free acidity of liquid is 1: 3-4 in the ratio of total acidity, and the process time is 50-60 minute, is then heated to 1100 DEG C 1200
Within the temperature range of DEG C, then pulling out workpiece, alignment afterwards, correction size, full circle make forging ratio 4-5, to forge outer ring；
C, heat treatment
Outer ring after conducting forging processing is carried out surface Atmosphere controlling heat-treatment: Atmosphere controlling heat-treatment is to be passed through in heat treated stove
Mixed gas, nitrogen intake 125～145ml/min, ethanol intake 54～70ml/min, propane intake 24～
43ml/min, its furnace gas atmosphere composition weight portion scope control is at nitrogen content 45～55 parts, hydrogen content 25～28 parts, dioxy
Change carbon content 10～12 parts；
D, machining shape: reduce allowance, prepare for mill processing；
E, corase grind Double End: use resin wheel to carry out grinding；
F, face machined flat: use resin wheel grinding, stock removal is less than corase grind processing.
A kind of high intensity air-conditioning bearing outer ring preparation method, it is characterised in that in steel ingot, chemistry becomes
Point percentage by weight is: 0.7%≤C≤0.75%, 1.1%≤Si≤1.2%, 0.55%≤Mn≤0.6%, 0.055%≤
Mo≤0.06%, 0.005%≤P≤0.01%, 0.005%≤S≤0.08%, 1.5%≤Cr≤1.6%, 0.1%≤Ti≤
0.11%, 0.1%≤Cu≤0.11%, surplus is ferrum and inevitable impurity.
A kind of high intensity air-conditioning bearing outer ring preparation method, it is characterised in that resin in step e
Emery wheel is made up of the raw material of following percentage by weight:
A kind of high intensity air-conditioning bearing outer ring preparation method, it is characterised in that resin in step e
Emery wheel is made up of the raw material of following percentage by weight:
5. according to high intensity air-conditioning bearing outer ring preparation method a kind of described in claim 3 or 4, it is characterised in that carborundum grain
Degree is 5 μm.
A kind of high intensity air-conditioning bearing outer ring preparation method, it is characterised in that resin in step f
The granularity of emery wheel is 50 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351806.4A CN105880949A (en) | 2016-05-24 | 2016-05-24 | Preparation method of high-strength outer ring for bearing of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351806.4A CN105880949A (en) | 2016-05-24 | 2016-05-24 | Preparation method of high-strength outer ring for bearing of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105880949A true CN105880949A (en) | 2016-08-24 |
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ID=56717628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610351806.4A Pending CN105880949A (en) | 2016-05-24 | 2016-05-24 | Preparation method of high-strength outer ring for bearing of air conditioner |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399761A (en) * | 2016-11-14 | 2017-02-15 | 安徽名杰净化科技有限公司 | Wind-erosion-resistant air-inlet grille board of purifier |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62157733A (en) * | 1985-12-28 | 1987-07-13 | Kanai Hiroyuki | Manufacture of drawing dice for flat wire with groove |
| CN1762660A (en) * | 2004-10-22 | 2006-04-26 | 郑州人造金刚石及制品工程技术研究中心 | Diamond resin grinder |
| CN103586785A (en) * | 2013-11-26 | 2014-02-19 | 常熟市巨力砂轮有限责任公司 | Method for preparing ceramic bond diamond grinding wheel |
| CN103722349A (en) * | 2014-01-06 | 2014-04-16 | 安徽银球轴承有限公司 | Machining process of air-conditioning deep groove ball bearing |
| CN104440594A (en) * | 2014-10-29 | 2015-03-25 | 杨祝华 | Resin binder diamond grinding wheel |
| CN105543632A (en) * | 2015-12-28 | 2016-05-04 | 合肥中澜新材料科技有限公司 | Preparation method of high-strength roller bearing outer ring |
-
2016
- 2016-05-24 CN CN201610351806.4A patent/CN105880949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62157733A (en) * | 1985-12-28 | 1987-07-13 | Kanai Hiroyuki | Manufacture of drawing dice for flat wire with groove |
| CN1762660A (en) * | 2004-10-22 | 2006-04-26 | 郑州人造金刚石及制品工程技术研究中心 | Diamond resin grinder |
| CN103586785A (en) * | 2013-11-26 | 2014-02-19 | 常熟市巨力砂轮有限责任公司 | Method for preparing ceramic bond diamond grinding wheel |
| CN103722349A (en) * | 2014-01-06 | 2014-04-16 | 安徽银球轴承有限公司 | Machining process of air-conditioning deep groove ball bearing |
| CN104440594A (en) * | 2014-10-29 | 2015-03-25 | 杨祝华 | Resin binder diamond grinding wheel |
| CN105543632A (en) * | 2015-12-28 | 2016-05-04 | 合肥中澜新材料科技有限公司 | Preparation method of high-strength roller bearing outer ring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399761A (en) * | 2016-11-14 | 2017-02-15 | 安徽名杰净化科技有限公司 | Wind-erosion-resistant air-inlet grille board of purifier |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |