CN103111808B - A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys - Google Patents

A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys Download PDF

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Publication number
CN103111808B
CN103111808B CN201310041247.3A CN201310041247A CN103111808B CN 103111808 B CN103111808 B CN 103111808B CN 201310041247 A CN201310041247 A CN 201310041247A CN 103111808 B CN103111808 B CN 103111808B
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Prior art keywords
upsetting
bolt
blank
hexagon socket
rolling
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CN103111808A (en
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王相波
林燚
刘清树
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GUIZHOU JINGLI HANGTAI TECHNOLOGY Co Ltd
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GUIZHOU JINGLI HANGTAI TECHNOLOGY Co Ltd
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Abstract

The invention discloses a kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys, the technique mainly includes blanking, string mill, lubrication, thick upsetting, pressure-sizing, heat treatment, cooling, sandblasting, machining, plug mill, Ageing Treatment, rolling screw thread, rolling R circular arcs, flaw detection and surface treatment step.Rationally, bolt head improves the bonding strength of bolt head and bar portion junction to present invention process Vehicle routing using performing hot-heading forming twice, rolling R techniques;Rational thermal upsetting die material and drift material have been selected simultaneously, manufacturing cost is reduced.Type is made by upsetting molding jig upsetting, the process-cycle of part is substantially reduced, the scale error that machining multiple clamping is produced is reduced;Processing is combined with grinding process by upsetting process, so as to ensure that the uniformity of accessory size and the stability of part quality.

Description

A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys
Technical field
The invention belongs to mechanical manufacturing field, it is related to a kind of processing technology of connector, more particularly, to a kind of Ni-based height Temperature alloy GH4169 hexagon socket head cap screw processing technologys.
Background technology
Nickel base superalloy be by matrix (content is generally higher than 50%) of nickel in the range of 650~1000 DEG C have it is higher Intensity and good anti-oxidant, resistance to combustion gas corrosion ability high temperature alloy, the alloy has higher intensity, is widely used in boat In the empty, standard component of space flight industry, wherein nickel base superalloy GH4169 hexagon socket head cap screws are often to connect in some high temperature positions The fastener used under binding structure.Nickel base superalloy GH4169 hexagon socket head cap screws have high temperature resistant, and highest work is up to 730 DEG C, the features such as corrosion-resistant, intensity is high, fatigue behaviour is high.Because temperature is higher, therefore the difficulty when making such hexagon socket head cap screw It is larger.Mostly be at present by using being processed after car system through the internal hexagonal of electric spark process, this process route process into Degree is slow, and low production efficiency, product quality can not be controlled efficiently.
The content of the invention
To solve the above problems, the invention provides a kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys. According to based high-temperature alloy hexagon socket head cap screw use condition and mechanical performance, technological design is carried out to the hexagon socket head cap screw, makes product Quality is efficiently controlled, so as to fabricate out the part for meeting regulation use requirement.
The purpose of the present invention is achieved by following technical solution.
A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys, are mainly comprised the following steps that:
(1)Blanking:Blanking is carried out using lathe by the Shi Jishiyong length of material of bolt and diameter;
(2)String mill:Cylindrical string mill is carried out to the blank after blanking;
(3)Lubrication:The blank after grinding that will go here and there is lubricated using copper facing;
(4)Thick upsetting:Blank after lubrication is put into upsetting molding jig, hot upsetting mode different shaped is used according to bolt specification Number the heading machines of attacking more carry out a head dummy upsetting system;
(5)Pressure-sizing:According to bolt specification using hot upsetting mode from different tonnages forcing press combination drift to thick upsetting after Blank carry out punching press bolt in hexagonal size;
(6)Heat treatment:Blank after thick upsetting and Precision forging is placed in vacuum drying oven and carries out solution treatment, solid solubility temperature is 1100 DEG C~1150 ± 25 DEG C, the time is 2~3h;
(7)Cooling:Will be such as step(6)Blank workpiece after the solution treatment is cooled down using air;
(8)Sandblasting:Workpiece after cooling is removed into surface scale;
(9)Machining:Base footpath before rolled thread is first processed using contracting bar mode, in use turnery processing bolt overall length and Cutting thread chamfer;
(10)Plug mill:Grind bolt shank size;
(11)Ageing Treatment:Aging temp is 850 ± 25 DEG C, and soaking time is 24~30h, air cooling;
(12)Rolling screw thread:Rolling screw-threads part is heated up to by 600 ± 50 DEG C of progress rolling screw threads using heating generator;
(13)Roll R circular arcs:Rolling bolt head and bar portion junction circular arc R;
(14)Flaw detection:Defect detecting test is carried out using fluorescence;
(15)Surface treatment:Silver-plated 3~5 μm;Through dehydrogenation after plating, 300 ± 25 DEG C of temperature, time control 24~ 30h。
Bolt shank is ground for the ease of rear process, the step(2)In it is cylindrical string mill size it is more final than bolt Big 0.2~the 0.3mm of bar portion size.
Because the nickel base superalloy GH4169 strengths of materials are high, to prevent upsetting molding jig from damaging, making for upsetting molding jig is improved With the life-span, therefore upsetting molding jig is made using hard alloy YG15 materials.Because YG15 has excellent intensity and toughness, it is adapted to Make Drawing die set, wear part and punching press accessory and hard alloy automatic press core rod.
The drift is made using Th66 materials.
The beneficial effects of the invention are as follows:
Compared with prior art, rationally, bolt head is using performing hot-heading forming twice, rolling R works for present invention process Vehicle routing Skill, improves the bonding strength of bolt head and bar portion junction;Rational thermal upsetting die material and drift material are selected simultaneously Material, reduces manufacturing cost.Type is made by upsetting molding jig upsetting, the process-cycle of part is substantially reduced, machinery is reduced and adds The scale error that work multiple clamping is produced;Processing is combined with grinding process by upsetting process, it is ensured that accessory size it is consistent The stability of property and part quality.
Embodiment
Technical scheme is further described with reference to embodiment, but claimed scope is not limited to institute State.
Embodiment 1:A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys, thread gage is processed using the technique When lattice are less than or equal to M12 bolt, mainly comprise the following steps that:
(1)Blanking:Blanking is carried out using lathe by the Shi Jishiyong length of material of bolt and diameter;
(2)String mill:Cylindrical string mill is carried out to the blank after blanking;
(3)Lubrication:The blank after grinding that will go here and there is lubricated using copper facing;
(4)Thick upsetting:Blank after lubrication is put into upsetting molding jig, hot upsetting mode different shaped is used according to bolt specification Number the heading machines of attacking more carry out a head dummy upsetting system;The process processing head size, interior hexagonal size is not processed.After thick upsetting Initial and end part does metallographic examination, checks bolt head metal streamline and bolt whether there is burning, superheating phenomenon.
5)Pressure-sizing:According to bolt specification using hot upsetting mode from different tonnages forcing press combination drift to thick upsetting after Blank carries out hexagonal size in punching press bolt;Initial and end part does metallographic examination after pressure-sizing, checks bolt head metal streamline and bolt Whether there is burning, superheating phenomenon.
(6)Heat treatment:Blank after thick upsetting and Precision forging is placed in vacuum drying oven and carries out solution treatment, solid solubility temperature is 1100 ± 25 DEG C, the time is 2h;
(7)Cooling:Will be such as step(6)Blank workpiece after the solution treatment is cooled down using air;
(8)Sandblasting:Workpiece after cooling is removed into surface scale;
(9)Machining:Base footpath before rolled thread is first processed using contracting bar mode, in use turnery processing bolt overall length and Cutting thread chamfer;
(10)Plug mill:Grind bolt shank size;
(11)Ageing Treatment:Aging temp is 850 ± 25 DEG C, and soaking time is 24~30h, air cooling;
(12)Rolling screw thread:Rolling screw-threads part is heated up to by 600 ± 50 DEG C of progress rolling screw threads using heating generator; Initial and end part does metallographic examination.
(13)Roll R circular arcs:Circular arc R under rolling supporting surface head;
(14)Flaw detection:Defect detecting test is carried out using fluorescence;It is not allow for crackle, is mingled with and other metallurgical imperfections;
(15)Surface treatment:Silver-plated 3~5 μm;Through dehydrogenation after plating, 300 ± 25 DEG C of temperature, time control 24~ 30h。
Embodiment 2:A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys, thread gage is processed using the technique Lattice are mainly comprised the following steps that in M12~M24 bolt:
(1)Blanking:Blanking is carried out using lathe by the Shi Jishiyong length of material of bolt and diameter;
(2)String mill:Cylindrical string mill is carried out to the blank after blanking;
(3)Lubrication:The blank after grinding that will go here and there is lubricated using copper facing;
(4)Thick upsetting:Blank after lubrication is put into upsetting molding jig, hot upsetting mode different shaped is used according to bolt specification Number the heading machines of attacking more carry out a head dummy upsetting system;The process processing head size, interior hexagonal size is not processed.After thick upsetting Initial and end part does metallographic examination, checks bolt head metal streamline and bolt whether there is burning, superheating phenomenon.
5)Pressure-sizing:According to bolt specification using hot upsetting mode from different tonnages forcing press combination drift to thick upsetting after Blank carries out hexagonal size in punching press bolt;Initial and end part does metallographic examination after pressure-sizing, checks bolt head metal streamline and bolt Whether there is burning, superheating phenomenon.
(6)Heat treatment:Blank after thick upsetting and Precision forging is placed in vacuum drying oven and carries out solution treatment, solid solubility temperature is 1150 ± 25 DEG C, the time is 2.5h;
(7)Cooling:Will be such as step(6)Blank workpiece after the solution treatment is cooled down using air;
(8)Sandblasting:Workpiece after cooling is removed into surface scale;
(9)Machining:Base footpath before rolled thread is first processed using contracting bar mode, in use turnery processing bolt overall length and Cutting thread chamfer;
(10)Plug mill:Grind bolt shank size;
(11)Ageing Treatment:Aging temp is 850 ± 25 DEG C, and soaking time is 24~30h, air cooling;
(12)Rolling screw thread:Rolling screw-threads part is heated up to by 600 ± 50 DEG C of progress rolling screw threads using heating generator; Initial and end part does metallographic examination.
(13)Roll R circular arcs:Circular arc R under rolling supporting surface head;
(14)Flaw detection:Defect detecting test is carried out using fluorescence;It is not allow for crackle, is mingled with and other metallurgical imperfections;
(15)Surface treatment:Silver-plated 3~5 μm;Through dehydrogenation after plating, 300 ± 25 DEG C of temperature, time control 24~ 30h。
Embodiment 3:A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys, thread gage is processed using the technique Lattice are mainly comprised the following steps that in M24~M42 bolt:
(1)Blanking:Blanking is carried out using lathe by the Shi Jishiyong length of material of bolt and diameter;
(2)String mill:Cylindrical string mill is carried out to the blank after blanking;
(3)Lubrication:The blank after grinding that will go here and there is lubricated using copper facing;
(4)Thick upsetting:Blank after lubrication is put into upsetting molding jig, hot upsetting mode different shaped is used according to bolt specification Number the heading machines of attacking more carry out a head dummy upsetting system;The process processing head size, interior hexagonal size is not processed.After thick upsetting Initial and end part does metallographic examination, checks bolt head metal streamline and bolt whether there is burning, superheating phenomenon.
5)Pressure-sizing:According to bolt specification using hot upsetting mode from different tonnages forcing press combination drift to thick upsetting after Blank carries out hexagonal size in punching press bolt;Initial and end part does metallographic examination after pressure-sizing, checks bolt head metal streamline and bolt Whether there is burning, superheating phenomenon.
(6)Heat treatment:Blank after thick upsetting and Precision forging is placed in vacuum drying oven and carries out solution treatment, solid solubility temperature is 1150 ± 25 DEG C, the time is 3h;
(7)Cooling:Will be such as step(6)Blank workpiece after the solution treatment is cooled down using air;
(8)Sandblasting:Workpiece after cooling is removed into surface scale;
(9)Machining:Base footpath before rolled thread is first processed using contracting bar mode, in use turnery processing bolt overall length and Cutting thread chamfer;
(10)Plug mill:Grind bolt shank size;
(11)Ageing Treatment:Aging temp is 850 ± 25 DEG C, and soaking time is 24~30h, air cooling;
(12)Rolling screw thread:Rolling screw-threads part is heated up to by 600 ± 50 DEG C of progress rolling screw threads using heating generator; Initial and end part does metallographic examination.
(13)Roll R circular arcs:Circular arc R under rolling supporting surface head;
(14)Flaw detection:Defect detecting test is carried out using fluorescence;It is not allow for crackle, is mingled with and other metallurgical imperfections;
(15)Surface treatment:Silver-plated 3~5 μm;Through dehydrogenation after plating, 300 ± 25 DEG C of temperature, time control 24~ 30h。

Claims (4)

1. a kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys, it is characterised in that:Mainly include following technique to walk Suddenly:
(1)Blanking:Blanking is carried out using lathe by the Shi Jishiyong length of material of bolt and diameter;
(2)String mill:Cylindrical string mill is carried out to the blank after blanking;
(3)Lubrication:The blank after grinding that will go here and there is lubricated using copper facing;
(4)Thick upsetting:Blank after lubrication is put into upsetting molding jig, according to bolt specification using hot upsetting mode different model Multistation heading machine carries out head dummy upsetting system;
(5)Pressure-sizing:The forcing press combination drift of different tonnages is selected to the hair after thick upsetting using hot upsetting mode according to bolt specification Base carries out hexagonal size in punching press bolt;
(6)Heat treatment:Blank after thick upsetting and Precision forging is placed in vacuum drying oven and carries out solution treatment, solid solubility temperature is 1100 DEG C~1150 ± 25 DEG C, the time is 2~3h;
(7)Cooling:Will be such as step(6)Blank workpiece after the solution treatment is cooled down using air;
(8)Sandblasting:Workpiece after cooling is removed into surface scale;
(9)Machining:Base footpath before rolled thread is first processed using contracting bar mode, then using turnery processing bolt overall length and car spiral shell Line chamfer;
(10)Plug mill:Grind bolt shank size;
(11)Ageing Treatment:Aging temp is 850 ± 25 DEG C, and soaking time is 24~30h, air cooling;
(12)Rolling screw thread:Rolling screw-threads part is heated up to by 600 ± 50 DEG C of progress rolling screw threads using heating generator;
(13)Roll R circular arcs:Rolling bolt head and bar portion junction circular arc R;
(14)Flaw detection:Defect detecting test is carried out using fluorescence;
(15)Surface treatment:Silver-plated 3~5 μm;Through dehydrogenation after plating, 300 ± 25 DEG C of temperature, time control is in 24~30h.
2. a kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys according to claim 1, it is characterised in that: The step(2)In cylindrical string mill size bar portion size more final than bolt big 0.2~0.3mm.
3. a kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys according to claim 1, its feature exists In:The step(4)Middle upsetting molding jig is made using hard alloy YG15 materials.
4. a kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys according to claim 1, it is characterised in that: The step(5)Middle drift is made using Th66 materials.
CN201310041247.3A 2013-02-01 2013-02-01 A kind of nickel base superalloy GH4169 hexagon socket head cap screw processing technologys Active CN103111808B (en)

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CN1296867A (en) * 1999-11-17 2001-05-30 常熟市千斤顶厂 Cold squeeze technology for making regulating screw bolt with hot rolled circular steel without cutting
DE10260828A1 (en) * 2002-12-23 2004-07-08 Sfs Intec Holding Ag Process for producing a screw and screw produced according to the process
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