CN104741879A - Processing technology of precision forging sliding sleeve - Google Patents

Processing technology of precision forging sliding sleeve Download PDF

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Publication number
CN104741879A
CN104741879A CN201510167729.2A CN201510167729A CN104741879A CN 104741879 A CN104741879 A CN 104741879A CN 201510167729 A CN201510167729 A CN 201510167729A CN 104741879 A CN104741879 A CN 104741879A
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CN
China
Prior art keywords
forging
blank
keep
raw
defect
Prior art date
Application number
CN201510167729.2A
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Chinese (zh)
Inventor
宋银生
朱彦
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江苏大洋精锻有限公司
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Publication date
Application filed by 江苏大洋精锻有限公司 filed Critical 江苏大洋精锻有限公司
Priority to CN201510167729.2A priority Critical patent/CN104741879A/en
Publication of CN104741879A publication Critical patent/CN104741879A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

Abstract

The invention relates to a processing technology of a precision forging sliding sleeve. The processing technology comprises the steps of raw material acceptance inspection, straightening, centreless milling, straightening and burnishing, centreless grinding, sawing, chamfering, shot blasting, coating, medium frequency heating, forwards extruding, upsetting, reversely extruding, punching, temperature controlling and cooling, secondary shot blasting, saponification of phosphorus, finishing and forming, taking a small end plane, taking length, centering, taking a large end plane, deburring and packing. The sliding sleeve produced by the processing technology is beautiful in color and luster and excellent in quality, the demands of an existing market can be met well, the intensity and rigidity of the sliding sleeve processed by the technology can be effectively ensured, and a situation of damaging and continuously changing cannot be caused in the process of using.

Description

A kind of processing technology of net-size forging sliding sleeve
Technical field
The present invention relates to a kind of processing technology of net-size forging sliding sleeve, belong to net-size forging processing technique field.
Background technology
Sliding sleeve is one of the strength member in car drivetrain system, and its mechanical performance and contour structures require very strict, and manufacture difficulty is very large.Due to the performance of the uniqueness of sliding sleeve, be more and more subject to now the favor in market.How to adopt efficient, economic method to produce the sliding sleeve part of high-quality, become urgent problem in production.The grinding process of traditional sliding sleeve spherical outside surface adopts forward filing, and it belongs to intermittent grinding and easily causes vibration because grinding force suddenlys change, and proposes oblique filing, improve surface quality and machining accuracy for this phenomenon.
Sliding sleeve is as the part on a basis, assembling for automobile has great impact, past, this part mainly adopted machining, because the intensity of material, hardness all can not be guaranteed, in actual use often there is part injury and need the phenomenon of constantly replacing in meeting, and this product generally adopts cold forming method at present, but technological design mainly still by rule of thumb, all also there is irrational phenomenon in distribution, the mould structure design of processing passage, needs further investigation.
Summary of the invention
The object of the invention is to: for the defect of prior art, propose a kind of processing technology of net-size forging sliding sleeve, the sliding sleeve that this processing technology goes out not only color and luster is attractive in appearance, and it is superior in quality, can be good at the needs meeting existing market, and go out the intensity of sliding sleeve by this processes and hardness can both be effectively guaranteed, in use can not there is the situation damaged and constantly change.
The technical solution adopted in the present invention is: a kind of processing technology of net-size forging inner race, comprises the steps:
A processing technology for net-size forging sliding sleeve, comprises the steps:
(1). raw-material examination: utilize desk-top direct-reading spectrometer to carry out warehouse-in sampling check to raw material, the raw material of sampling results should meet 55#-GB699 standard;
(2). aligning: the blank aligning calendering equipment be bent in transportation at raw material is aligned, the linearity≤0.6mm/m of the blank after aligning;
(3). be not in the mood for car: utilize Centreless lathe to be cut by round stock outer surface, remove the defects such as raw material face crack, keep roughness≤Ra12.5;
(4). aligning press polish: the blank aligning calendering equipment be bent in transportation at raw material is aligned, the linearity≤0.6mm/m of the blank after aligning;
(5). centreless grinding: with centerless grinder outward appearance had obvious impression, the defect such as to damage polishes, and keeps roughness≤Ra3.2;
(6). saw material: with circular saw, round stock is sawn into the identical forging of size, and keeps each forge weight to be between 2006g-2021 g;
(7). chamfering: chamfered is carried out for the forging beveler after saw material;
(8). ball blast: the forging Caterpillar type shot blasting machine after chamfering is carried out without rusty stain and non-scale process to its surface;
(9). coating: forging surface is heated and coating with automatic coating heating furnace, the pre-heating temperature of its floating coat 50 DEG C ~ 150 DEG C, water route pressure 0.1 ~ 0.25Mpa, airline pressure 0.20 ~ 0.70Mpa, ink-jet pump pressure 0.3 ~ 0.70Mpa;
(10). heating in medium frequency: heat forging surface with automatic coating heating furnace, maintain the temperature at 840-890 DEG C, the time is at 3.0 ± 1min;
(11). just crowded: with the hydraulic press of more than 630T, the carrying out of blank outflow part from nib just to be squeezed, keep hold non-trimming greatly, surface without plucking, fold etc. forging defect;
(12). jumping-up: with more than 630T forcing press, blank height is reduced and diameter (or lateral dimension) increases, make blank without galling defect simultaneously, keep burr can not plough under in raceway groove;
(13). instead to squeeze: squeeze counter for the carrying out of blank outflow part from nib with the hydraulic press of more than 630T, in keeping, must not there be the defect such as plucking, crackle, folding, misrun, fleshiness on exocoel surface;
(14). temperature control cools: the forging after instead squeezing is put into 100KW net belt type continuous annealing furnace and carried out temperature control cooling, keeps grain size >=6 grade of forging, decarburized layer deepness≤0.05mm;
(15). secondary ball blast: cooled forging shot-blasting machine is carried out without rusty stain and non-scale process to its surface;
(16). phospholeum: in phospholeum automatic production line, maintenance sulfuric acid concentration is 10-20%, and saponification agent concentration is 1.5 ~ 3.5 units, and Phosphating Slot temperature is 70 ~ 85 DEG C, phosphating time 10 ~ 25 minutes, soap tank temperature is 75 ~ 85 DEG C, saponification time 5 ~ 10 minutes, and scalding groove temperature is 65 ~ 85 DEG C, scald time 1-2 minute, make forging surface uniform cover one deck phosphate coating, in taupe, hand touches with lubrication sense;
(17). finishing is shaped: carry out finishing with more than 200T forcing press to forging, keeps the inner chamber cylindrical of forging without defects such as plucking, crackle, decarburizations;
(18). get small end face: with engine lathe, forging is intercepted a part, keep segment length 87.3 ± 0.15 mm simultaneously;
(19). get length: undertaken getting length by getting the forging after small end face with engine lathe, keep overall length to be 158.7 ± 0.2 mm, surface roughness is Ra12.5, and outward appearance is without the defect such as crushing, collide with;
(20). centering: the forging after getting length is holed, keeps aperture to be Φ 18.5 ± 0.2, and make roughness≤Ra3.2
(21). get large end face: with engine lathe, forging is intercepted a part, keep segment length 87.85 ± 0.075 mm simultaneously, keep outward appearance without rusty stain simultaneously, crush, damage, the defect such as burr
(22). deburring: polish with the end face of pneumatic grinding head by forging, make end face impulse-free robustness;
(23). packaging: finished product forging is put in packing case according to the requirement specified and quantity and encapsulates, check net cage, ensure without any wood thorn damaging antirust bag, the foreign matters such as iron nail, and put hardboard in net cage surrounding, bottom net cage, put into one, antirust bag simultaneously, check with or without breakage, and a plastic septum is put in bottom, before vanning, workpiece hole is upwards discharged, with electric spray gun even application antirust oil, range estimation inner chamber and outer surface 100% adhere to antirust oil, seal with poly-bag after plastic bag mouth being turned down after installing, shipping mark is hung up in middle, net cage side.
After adopting technique scheme, beneficial effect of the present invention is: the sliding sleeve produced by this processing technology not only color and luster is attractive in appearance, and it is superior in quality, can be good at the needs meeting existing market, and go out the intensity of sliding sleeve by this processes and hardness can both be effectively guaranteed, in use can not there is the situation damaged and constantly change.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
A processing technology for net-size forging sliding sleeve, comprises the steps:
(1). raw-material examination: utilize desk-top direct-reading spectrometer to carry out warehouse-in sampling check to raw material, the raw material of sampling results should meet 55#-GB699 standard;
(2). aligning: the blank aligning calendering equipment be bent in transportation at raw material is aligned, the linearity≤0.6mm/m of the blank after aligning;
(3). be not in the mood for car: utilize Centreless lathe to be cut by round stock outer surface, remove the defects such as raw material face crack, keep roughness≤Ra12.5;
(4). aligning press polish: the blank aligning calendering equipment be bent in transportation at raw material is aligned, the linearity≤0.6mm/m of the blank after aligning;
(5). centreless grinding: with centerless grinder outward appearance had obvious impression, the defect such as to damage polishes, and keeps roughness≤Ra3.2;
(6). saw material: with circular saw, round stock is sawn into the identical forging of size, and keeps each forge weight to be between 2006g-2021 g;
(7). chamfering: chamfered is carried out for the forging beveler after saw material;
(8). ball blast: the forging Caterpillar type shot blasting machine after chamfering is carried out without rusty stain and non-scale process to its surface;
(9). coating: forging surface is heated and coating with automatic coating heating furnace, the pre-heating temperature of its floating coat 50 DEG C ~ 150 DEG C, water route pressure 0.1 ~ 0.25Mpa, airline pressure 0.20 ~ 0.70Mpa, ink-jet pump pressure 0.3 ~ 0.70Mpa;
(10). heating in medium frequency: heat forging surface with automatic coating heating furnace, maintain the temperature at 840-890 DEG C, the time is at 3.0 ± 1min;
(11). just crowded: with the hydraulic press of more than 630T, the carrying out of blank outflow part from nib just to be squeezed, keep hold non-trimming greatly, surface without plucking, fold etc. forging defect;
(12). jumping-up: with more than 630T forcing press, blank height is reduced and diameter (or lateral dimension) increases, make blank without galling defect simultaneously, keep burr can not plough under in raceway groove;
(13). instead to squeeze: squeeze counter for the carrying out of blank outflow part from nib with the hydraulic press of more than 630T, in keeping, must not there be the defect such as plucking, crackle, folding, misrun, fleshiness on exocoel surface;
(14). temperature control cools: the forging after instead squeezing is put into 100KW net belt type continuous annealing furnace and carried out temperature control cooling, keeps grain size >=6 grade of forging, decarburized layer deepness≤0.05mm;
(15). secondary ball blast: cooled forging shot-blasting machine is carried out without rusty stain and non-scale process to its surface;
(16). phospholeum: in phospholeum automatic production line, maintenance sulfuric acid concentration is 10-20%, and saponification agent concentration is 1.5 ~ 3.5 units, and Phosphating Slot temperature is 70 ~ 85 DEG C, phosphating time 10 ~ 25 minutes, soap tank temperature is 75 ~ 85 DEG C, saponification time 5 ~ 10 minutes, and scalding groove temperature is 65 ~ 85 DEG C, scald time 1-2 minute, make forging surface uniform cover one deck phosphate coating, in taupe, hand touches with lubrication sense;
(17). finishing is shaped: carry out finishing with more than 200T forcing press to forging, keeps the inner chamber cylindrical of forging without defects such as plucking, crackle, decarburizations;
(18). get small end face: with engine lathe, forging is intercepted a part, keep segment length 87.3 ± 0.15 mm simultaneously;
(19). get length: undertaken getting length by getting the forging after small end face with engine lathe, keep overall length to be 158.7 ± 0.2 mm, surface roughness is Ra12.5, and outward appearance is without the defect such as crushing, collide with;
(20). centering: the forging after getting length is holed, keeps aperture to be Φ 18.5 ± 0.2, and make roughness≤Ra3.2
(21). get large end face: with engine lathe, forging is intercepted a part, keep segment length 87.85 ± 0.075 mm simultaneously, keep outward appearance without rusty stain simultaneously, crush, damage, the defect such as burr
(22). deburring: polish with the end face of pneumatic grinding head by forging, make end face impulse-free robustness;
(23). packaging: finished product forging is put in packing case according to the requirement specified and quantity and encapsulates, check net cage, ensure without any wood thorn damaging antirust bag, the foreign matters such as iron nail, and put hardboard in net cage surrounding, bottom net cage, put into one, antirust bag simultaneously, check with or without breakage, and a plastic septum is put in bottom, before vanning, workpiece hole is upwards discharged, with electric spray gun even application antirust oil, range estimation inner chamber and outer surface 100% adhere to antirust oil, seal with poly-bag after plastic bag mouth being turned down after installing, shipping mark is hung up in middle, net cage side.
Above the specific embodiment of the present invention is described, but the present invention is not limited to above description.For a person skilled in the art, any equal amendment to the technical program and substitute be all within the scope of the invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should be encompassed in scope of the present invention.

Claims (1)

1. a processing technology for net-size forging sliding sleeve, is characterized in that: comprise the steps:
(1), raw-material examination: utilize desk-top direct-reading spectrometer to carry out warehouse-in sampling check to raw material, the raw material of sampling results should meet 55#-GB699 standard;
(2), align: the blank aligning calendering equipment be bent in transportation at raw material is aligned, the linearity≤0.6mm/m of the blank after aligning;
(3), car is not in the mood for: utilize Centreless lathe to be cut by round stock outer surface, remove the defects such as raw material face crack, keep roughness≤Ra12.5;
(4), press polish is aligned: the blank aligning calendering equipment be bent in transportation at raw material is aligned, the linearity≤0.6mm/m of the blank after aligning;
(5), centreless grinding: with centerless grinder outward appearance had obvious impression, the defect such as to damage polishes, and keeps roughness≤Ra3.2;
(6), saw material: with circular saw, round stock is sawn into the identical forging of size, and keeps each forge weight to be between 2006g-2021 g;
(7), chamfering: chamfered is carried out for the forging beveler after saw material;
(8), ball blast: the forging Caterpillar type shot blasting machine after chamfering is carried out without rusty stain and non-scale process to its surface;
(9), coating: with automatic coating heating furnace, forging surface is heated and coating, the pre-heating temperature of its floating coat 50 DEG C ~ 150 DEG C, water route pressure 0.1 ~ 0.25Mpa, airline pressure 0.20 ~ 0.70Mpa, ink-jet pump pressure 0.3 ~ 0.70Mpa;
(10), heating in medium frequency: heat forging surface with automatic coating heating furnace, maintain the temperature at 840-890 DEG C, the time is at 3.0 ± 1min;
(11), just crowded: with the hydraulic press of more than 630T, the carrying out of blank outflow part from nib is just being squeezed, keep hold non-trimming greatly, surface without plucking, fold etc. forging defect;
(12), jumping-up: with more than 630T forcing press, blank height is reduced and diameter (or lateral dimension) increases, make blank without galling defect simultaneously, keep burr can not plough under in raceway groove;
(13), instead to squeeze: squeeze counter for the carrying out of blank outflow part from nib with the hydraulic press of more than 630T, in keeping, must not there be the defect such as plucking, crackle, folding, misrun, fleshiness on exocoel surface;
(14), temperature control cooling: the forging after instead squeezing is put into 100KW net belt type continuous annealing furnace and carried out temperature control cooling, keeps grain size >=6 grade of forging, decarburized layer deepness≤0.05mm;
(15), secondary ball blast: cooled forging shot-blasting machine is carried out without rusty stain and non-scale process to its surface;
(16), phospholeum: in phospholeum automatic production line, maintenance sulfuric acid concentration is 10-20%, and saponification agent concentration is 1.5 ~ 3.5 units, and Phosphating Slot temperature is 70 ~ 85 DEG C, phosphating time 10 ~ 25 minutes, soap tank temperature is 75 ~ 85 DEG C, saponification time 5 ~ 10 minutes, and scalding groove temperature is 65 ~ 85 DEG C, scald time 1-2 minute, make forging surface uniform cover one deck phosphate coating, in taupe, hand touches with lubrication sense;
(17), finishing is shaped: carry out finishing with more than 200T forcing press to forging, keep the inner chamber cylindrical of forging without defects such as plucking, crackle, decarburizations;
(18), get small end face: with engine lathe, forging is intercepted a part, keep segment length 87.3 ± 0.15 mm simultaneously;
(19), get length: undertaken getting length by getting the forging after small end face with engine lathe, keep overall length to be 158.7 ± 0.2 mm, surface roughness is Ra12.5, and outward appearance is without the defect such as crushing, collide with;
Centering: the forging after getting length is holed, keeps aperture to be Φ 18.5 ± 0.2, and make roughness≤Ra3.2;
(21), get large end face: with engine lathe, forging is intercepted a part, keep segment length 87.85 ± 0.075 mm simultaneously, keep outward appearance without rusty stain simultaneously, crush, damage, the defect such as burr
(22), deburring: polish with the end face of pneumatic grinding head by forging, make end face impulse-free robustness;
(23), packaging: finished product forging is put in packing case according to the requirement specified and quantity and encapsulates, check net cage, ensure without any wood thorn damaging antirust bag, the foreign matters such as iron nail, and put hardboard in net cage surrounding, bottom net cage, put into one, antirust bag simultaneously, check with or without breakage, and a plastic septum is put in bottom, before vanning, workpiece hole is upwards discharged, with electric spray gun even application antirust oil, range estimation inner chamber and outer surface 100% adhere to antirust oil, seal with poly-bag after plastic bag mouth being turned down after installing, shipping mark is hung up in middle, net cage side.
CN201510167729.2A 2015-04-10 2015-04-10 Processing technology of precision forging sliding sleeve CN104741879A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104924037A (en) * 2015-06-19 2015-09-23 江苏大洋精锻有限公司 Machining technology of precise forged piece bell housing
CN107263021A (en) * 2017-05-09 2017-10-20 江苏创汽车零部件有限公司 A kind of duplex forging moulding process of sliding sleeve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030168126A1 (en) * 2001-06-28 2003-09-11 Tsukashi Oohama Outer ring member for constant velocity joint and method of manufacturing the member
CN1886212A (en) * 2003-11-27 2006-12-27 本田技研工业株式会社 Method of manufacturing outer ring member for constant velocity joint
CN101550969A (en) * 2008-04-03 2009-10-07 江苏威鹰机械有限公司 Automobile constant velocity cardan joint transmission shaft inner sliding sleeve finish forging pot shell and production process thereof
CN102248101A (en) * 2011-06-15 2011-11-23 江苏创一精锻有限公司 Whole forging near net forming process for inner ball cage sliding sleeve
CN102528391A (en) * 2011-12-23 2012-07-04 江苏森威精锻有限公司 Forming method for improving coaxiality of backward-extruding inner cavity and external form of cardan sleeve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030168126A1 (en) * 2001-06-28 2003-09-11 Tsukashi Oohama Outer ring member for constant velocity joint and method of manufacturing the member
CN1886212A (en) * 2003-11-27 2006-12-27 本田技研工业株式会社 Method of manufacturing outer ring member for constant velocity joint
CN101550969A (en) * 2008-04-03 2009-10-07 江苏威鹰机械有限公司 Automobile constant velocity cardan joint transmission shaft inner sliding sleeve finish forging pot shell and production process thereof
CN102248101A (en) * 2011-06-15 2011-11-23 江苏创一精锻有限公司 Whole forging near net forming process for inner ball cage sliding sleeve
CN102528391A (en) * 2011-12-23 2012-07-04 江苏森威精锻有限公司 Forming method for improving coaxiality of backward-extruding inner cavity and external form of cardan sleeve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104924037A (en) * 2015-06-19 2015-09-23 江苏大洋精锻有限公司 Machining technology of precise forged piece bell housing
CN107263021A (en) * 2017-05-09 2017-10-20 江苏创汽车零部件有限公司 A kind of duplex forging moulding process of sliding sleeve

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