CN106640975A - Upper guide bearing shoe machining technique - Google Patents
Upper guide bearing shoe machining technique Download PDFInfo
- Publication number
- CN106640975A CN106640975A CN201610914935.XA CN201610914935A CN106640975A CN 106640975 A CN106640975 A CN 106640975A CN 201610914935 A CN201610914935 A CN 201610914935A CN 106640975 A CN106640975 A CN 106640975A
- Authority
- CN
- China
- Prior art keywords
- leading axle
- upper leading
- axle watt
- casting
- carries out
- 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
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
The invention provides an upper guide bearing shoe machining technique. The technique sequentially comprises the following steps that (a) UT flaw inspection is conducted on shoe billets, dimensions of all parts of the shoe billets and the appearance quality are checked, and the shoe billets which pass the UT flaw inspection and have the roughness Ra being 2-8 microns are screened for the next step of treatment; and (b) the shoe billets are placed into an electric furnace for dehydrogenation annealing treatment, the initial temperature for heating the shoe billets is not higher than 120 DEG C, loads are heated to the temperature of 550-650 DEG C at the constant speed of 100-150 DEG C/h through the electric furnace, after heat preservation is conducted for 8-15 h, the electric furnace is subjected to cooling treatment in two stages, in the first cooling stage, the cooling speed of the electric furnace is not higher than 85 DEG C/h, and the second cooling stage is started after the electric furnace is cooled to the temperature of 150 DEG C; and in the second cooling stage, an electric furnace door is opened, and the temperature inside the furnace is decreased to the room temperature through air. Products produced through the upper guide bearing shoe machining technique have the characteristics of being high in quality, high in machining precision and long in service life.
Description
Technical field
The invention belongs to upper leading axle watt technical field, more particularly, to a kind of upper leading axle watt processing technology.
Background technology
Bearing shell is the part of sliding bearing and journal contact, is shaped as the semi-cylindrical of tiles, and unusual light is general with green grass or young crops
The high-abrasive materials such as copper, antifriction alloy are made, and under special circumstances, can be made with timber, engineering plastics or rubber.Bearing shell has whole
Two kinds of body formula and dissection type, monoblock type bearing shell is commonly referred to axle sleeve.Monoblock type bearing shell whether there is oil duct and has two kinds of oil duct.Bearing shell with
Axle journal using gap coordinate, typically with do not rotate with the axis.The bearing shell product quality of existing upper leading axle watt processing technology production compared with
Difference, the stability of alloy-layer is poor, and the service life of bearing shell is shorter.
The content of the invention
The purpose of the present invention is for the problems referred to above, there is provided a kind of upper leading axle watt processing technology, high with product quality, plus
The advantage of work high precision and long service life.
To reach above-mentioned purpose, following technical proposal is present invention employs：This upper leading axle watt processing technology, include successively with
Lower step：
A) UT defect detecting tests are carried out to unbaked tile, each portion's size of unbaked tile and presentation quality is checked, screening UT flaw detections is without inspection
To defect and roughness Ra is that 2～8 μm of unbaked tile is for further processing；
B) unbaked tile is placed in electric furnace carries out dehydrogenation process, and the initial temperature that unbaked tile is heated is not higher than 120 DEG C, electricity
Stove is loaded to 550～650 DEG C with 100～150 DEG C of constant-speed heatings per hour, after being incubated 8～15 hours, by electric furnace in two stages
Carry out cooling treatment；The cooldown rate of electric furnace must not be entered higher than 85 DEG C per hour after being cooled to 150 DEG C in first cooling stage
Second cooling stage；In the second cooling stage, electric stove door is opened so that in-furnace temperature is cooled to room temperature by air；
C) unbaked tile to obtaining after step b) process carries out N Reference Alignment, and then unbaked tile is pressed the size pair on design drawing
Unbaked tile carries out roughing, obtains the roughing part of upper leading axle watt, and the roughness Ra of described roughing part is 2～7 μm；
D) to step c) to the endoporus alloy casting face of roughing part successively carry out PT flaw detections, UT flaw detections, to screening
Qualified products bore area carries out scarfing cinder process, and carries out the pre-heat treatment to apparatus of casting, then by centrifugal casting machine to thick
The endoporus of workpiece carries out spun casting babbit, and casting is cooled down after finishing to product；
E) to step d) to product carry out UT defect detecting tests, PT defect detecting tests and qualified product to not finding defect
The product specification that carries out an acceptance inspection carries out an acceptance inspection and obtains upper leading axle watt semi-finished product；
F) upper leading axle watt for e) step being obtained according to processing request draw the upper cutting line for being used to cut upper leading axle watt open and
Side processing line；Then upper leading axle watt is cut into some pieces by cutting line by milling equipment, and carries out mark；Add by side again
Work line is rived the two sides of upper leading axle tile fragment, and it is 2～4 μm to meet the roughness Ra in each face of upper leading axle watt；
G) upper leading axle watt obtained to step f) carries out hole machined process by drilling machine equipment, hole machined finish after to above leading
The alloy surface of bearing shell carries out UT defect detecting tests, and PT defect detecting tests are done to the alloy faying face of upper leading axle watt periphery, it is qualified after
Make a record.
Preferably, described UT defect detecting tests carry out 100%UT defect detecting tests using digital flaw detector to unbaked tile.
Preferably, described digital flaw detector includes probe, the frequency range of described probe is 1～6MHz, is popped one's head in
The scope of effective crystal diameter be 10～40mm, the acoustic beam angular range of probe is 35～70 °, effective crystalline areas model of popping one's head in
Enclose for 20～62.5mm2。
Preferably, unbroken disposable casting process is adopted in described step d) during spun casting babbit,
Uniform heating treatment is carried out to the back side of roughing part in casting cycle, is cooled down by the way of air cooling after the completion of casting and is added
Workpiece, cast temperature is 400～500 degrees Celsius.
Preferably, the product that step g) is obtained corrects guide bearing block end face by clamping fixture for correcting, and clear up upper leading axle watt
The burr on surface, cleans guide bearing block, confirms to coat antirust oil to upper leading axle watt surface after outward appearance zero defect.
Compared with prior art, it is an advantage of the current invention that：The upper leading axle watt prepared using this technique has high precision,
The quality of product is greatly improved while product percent of pass is ensured, the spun casting on upper leading axle watt endoporus can be by bar
Family name's alloy-layer is adjacent on upper leading axle watt, can avoid the defects such as loose, crackle, shelling of casting, and alloy layer tissue can be made thin
It is close, the service life of upper leading axle watt can be extended.
Specific embodiment
The present invention is comprised the following steps successively：
A) UT defect detecting tests are carried out to unbaked tile, each portion's size of unbaked tile and presentation quality is checked, screening UT flaw detections is without inspection
To defect and roughness Ra is that 6.3 μm of unbaked tile is for further processing；
B) unbaked tile is placed in electric furnace carries out dehydrogenation process, the initial temperature that unbaked tile is heated be 100 DEG C, electric furnace with
Per hour 120 DEG C of constant-speed heatings are loaded to 600 DEG C, after being incubated 10 hours, electric furnace are carried out in two stages cooling treatment；First
The cooldown rate of electric furnace is 70 DEG C per hour in cooling stage, and the second cooling stage is entered after being cooled to 150 DEG C；In the second cooling
In stage, electric stove door is opened so that in-furnace temperature is cooled to room temperature by air；
C) unbaked tile to obtaining after step b) process carries out N Reference Alignment, and then unbaked tile is pressed the size pair on design drawing
Unbaked tile carries out roughing, obtains the roughing part of upper leading axle watt, and the roughness Ra of described roughing part is 6.3 μm；
D) to step c) to the endoporus alloy casting face of roughing part successively carry out PT flaw detections, UT flaw detections, to screening
Qualified products bore area carries out scarfing cinder process, and carries out the pre-heat treatment to apparatus of casting, then by centrifugal casting machine to thick
The endoporus of workpiece carries out spun casting babbit, and casting is cooled down after finishing to product, and spun casting can be by Pasteur
Aluminium alloy is adjacent on bearing body, can avoid the defects such as loose, crackle, shelling of casting, and alloy layer tissue can be made fine and closely woven；
E) to step d) to product carry out UT defect detecting tests, PT defect detecting tests and qualified product to not finding defect
The product specification that carries out an acceptance inspection carries out an acceptance inspection and obtains upper leading axle watt semi-finished product；
F) upper leading axle watt for e) step being obtained according to processing request draw the upper cutting line for being used to cut upper leading axle watt open and
Side processing line；Then upper leading axle watt is cut into some pieces by cutting line by milling equipment, and carries out mark；Add by side again
Work line is rived the two sides of upper leading axle tile fragment, and it is 3.2 μm to meet the roughness Ra in each face of upper leading axle watt；
G) upper leading axle watt obtained to step f) carries out hole machined process by drilling machine equipment, hole machined finish after to above leading
The alloy surface of bearing shell carries out UT defect detecting tests, and PT defect detecting tests are done to the alloy faying face of upper leading axle watt periphery, it is qualified after
Make a record.
The product that step g) is obtained corrects guide bearing block end face by clamping fixture for correcting, and clears up the hair on upper leading axle watt surface
Thorn, cleans guide bearing block, confirms to coat antirust oil to upper leading axle watt surface after outward appearance zero defect.
UT defect detecting tests carry out 100%UT defect detecting tests, above-mentioned digital flaw detector bag to unbaked tile using digital flaw detector
Probe is included, the frequency range of described probe is 1～6MHz, and the scope of effective crystal diameter of probe is 10～40mm, is popped one's head in
Acoustic beam angular range be 35～70 °, the effective crystalline areas scope of popping one's head in is 20～62.5mm2。
Unbroken disposable casting process is adopted in step d) during spun casting babbit, to thick in casting cycle
The back side of workpiece carries out uniform heating treatment, and roughing part is cooled down by the way of air cooling after the completion of casting, can be effective
Alloy-layer segregation is prevented, cast temperature is 450 degrees Celsius, and temperature is too high to cause burning loss of alloy to avoid, the alloy in this programme
Can be used with 70 percent new babbit and the collocation of 30 percent old babbit, it should be noted that institute in fusion process
The cleaning of the apparatus such as some melting pans, spoon, iron staff.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications to described specific embodiment or supplement or replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (5)
1. a kind of upper leading axle watt processing technology, it is characterised in that comprise the following steps successively：
A) UT defect detecting tests are carried out to unbaked tile, each portion's size of unbaked tile and presentation quality is checked, screening UT flaw detections does not check scarce
Sunken and roughness Ra is that 2～8 μm of unbaked tile is for further processing；
B) unbaked tile is placed in electric furnace carries out dehydrogenation process, and the initial temperature that unbaked tile is heated is not higher than 120 DEG C, electric furnace with
Per hour 100～150 DEG C of constant-speed heatings are loaded to 550～650 DEG C, after being incubated 8～15 hours, electric furnace are carried out in two stages
Cooling treatment；The cooldown rate of electric furnace must not enter second higher than 85 DEG C per hour in first cooling stage after being cooled to 150 DEG C
Cooling stage；In the second cooling stage, electric stove door is opened so that in-furnace temperature is cooled to room temperature by air；
C) N Reference Alignment is carried out to the unbaked tile that obtains after step b) process, then unbaked tile is pressed into size on design drawing to unbaked tile
Roughing is carried out, the roughing part of upper leading axle watt is obtained, the roughness Ra of described roughing part is 2～7 μm；
D) to step c) to the endoporus alloy casting face of roughing part successively carry out PT flaw detections, UT flaw detections, it is qualified to screening
Product bore area carries out scarfing cinder process, and carries out the pre-heat treatment to apparatus of casting, then by centrifugal casting machine to roughing
The endoporus of part carries out spun casting babbit, and casting is cooled down after finishing to product；
E) to step d) to product carry out UT defect detecting tests, PT defect detecting tests and qualified products to not finding defect and enter
Row acceptance specification carries out an acceptance inspection and obtains upper leading axle watt semi-finished product；
F) upper leading axle watt obtained to e) step according to processing request draws upper cutting line and the side for being used to cut upper leading axle watt open
Processing line；Then upper leading axle watt is cut into some pieces by cutting line by milling equipment, and carries out mark；Side processing line is pressed again
Rive the two sides of upper leading axle tile fragment, and it is 2～4 μm to meet the roughness Ra in each face of upper leading axle watt；
G) upper leading axle watt obtained to step f) carries out hole machined process by drilling machine equipment, hole machined finish after to upper leading axle watt
Alloy surface carry out UT defect detecting tests, and PT defect detecting tests are done to the alloy faying face of upper leading axle watt periphery, it is qualified after carry out
Record.
2. upper leading axle watt processing technology according to claim 1, it is characterised in that：Described UT defect detecting tests are using numeral
Defectoscope carries out 100%UT defect detecting tests to unbaked tile.
3. upper leading axle watt processing technology according to claim 2, it is characterised in that：Described digital flaw detector includes visiting
Head, the frequency range of described probe is 1～6MHz, and the scope of effective crystal diameter of probe is 10～40mm, the sound of probe
Beam angular range is 35～70 °, and effective crystalline areas scope of popping one's head in is 20～62.5mm2。
4. upper leading axle watt processing technology according to claim 1, it is characterised in that：Spun casting bar in described step d)
Unbroken disposable casting process is adopted during family name's alloy, the back side of roughing part is carried out at uniform heating in casting cycle
Reason, roughing part is cooled down after the completion of casting by the way of air cooling, and cast temperature is 400～500 degrees Celsius.
5. upper leading axle watt processing technology according to claim 1, it is characterised in that：The product that step g) is obtained passes through school
Positive fixture correction guide bearing block end face, and the burr on upper leading axle watt surface is cleared up, guide bearing block is cleaned, confirm after outward appearance zero defect to upper
Guide bearing block surface coats antirust oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610914935.XA CN106640975B (en) | 2016-10-20 | 2016-10-20 | Upper guide bearing bush machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610914935.XA CN106640975B (en) | 2016-10-20 | 2016-10-20 | Upper guide bearing bush machining process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640975A true CN106640975A (en) | 2017-05-10 |
| CN106640975B CN106640975B (en) | 2020-09-08 |
Family
ID=58856880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610914935.XA Active CN106640975B (en) | 2016-10-20 | 2016-10-20 | Upper guide bearing bush machining process |
Country Status (1)
| Country | Link |
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| CN (1) | CN106640975B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112157405A (en) * | 2020-09-30 | 2021-01-01 | 重庆跃进机械厂有限公司 | Processing method of low-speed diesel engine bimetallic bearing bush |
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| CN101275606A (en) * | 2008-01-22 | 2008-10-01 | 重庆跃进机械厂 | Manufacturing process of high-power low-speed diesel shaft bushing |
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| CN102022433A (en) * | 2009-09-22 | 2011-04-20 | 上海腾辉锻造有限公司 | Method for manufacturing chromium bronze thrust bearing pads |
| CN104416137A (en) * | 2013-08-31 | 2015-03-18 | 扬州一丰铜业有限公司 | Bearing bush pouring mould |
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2016
- 2016-10-20 CN CN201610914935.XA patent/CN106640975B/en active Active
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|---|---|---|---|---|
| CN101275606A (en) * | 2008-01-22 | 2008-10-01 | 重庆跃进机械厂 | Manufacturing process of high-power low-speed diesel shaft bushing |
| CN101525704A (en) * | 2008-03-07 | 2009-09-09 | 杭州钱王机械配件有限公司 | Alloy for manufacturing bush and method for manufacturing bush thereof |
| CN102022433A (en) * | 2009-09-22 | 2011-04-20 | 上海腾辉锻造有限公司 | Method for manufacturing chromium bronze thrust bearing pads |
| CN104416137A (en) * | 2013-08-31 | 2015-03-18 | 扬州一丰铜业有限公司 | Bearing bush pouring mould |
| CN105316532A (en) * | 2014-08-04 | 2016-02-10 | 上海核威实业有限公司 | Manufacturing method for aluminum alloy-steel double metal material used for sliding bearing of multilayer structure |
Non-Patent Citations (3)
| Title |
|---|
| 任晓善主编: "《化工机械维修手册（上卷）》", 29 February 2004 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112157405A (en) * | 2020-09-30 | 2021-01-01 | 重庆跃进机械厂有限公司 | Processing method of low-speed diesel engine bimetallic bearing bush |
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| CN106640975B (en) | 2020-09-08 |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180717 Address after: 311800 Rong Road Development Zone, Tao Zhu street, Zhuji, Shaoxing, Zhejiang. Applicant after: ZHUJI HONGYUAN POWER MACHINERY CO.,LTD. Address before: 311800 Zhoucun 823, Jieting Town, Zhuji City, Shaoxing City, Zhejiang Province Applicant before: Chen Xuegang |
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Denomination of invention: Processing technology of upper guide bearing bush Effective date of registration: 20230626 Granted publication date: 20200908 Pledgee: Bank of Ningbo Co.,Ltd. Shaoxing Branch Pledgor: ZHUJI HONGYUAN POWER MACHINERY CO.,LTD. Registration number: Y2023980045590 |