CN105728648A - Method for manufacturing blank of pipe clamp - Google Patents

Method for manufacturing blank of pipe clamp Download PDF

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Publication number
CN105728648A
CN105728648A CN201610159308.XA CN201610159308A CN105728648A CN 105728648 A CN105728648 A CN 105728648A CN 201610159308 A CN201610159308 A CN 201610159308A CN 105728648 A CN105728648 A CN 105728648A
Authority
CN
China
Prior art keywords
pipe clamp
mould
arenaceous shell
die cavity
core
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.)
Withdrawn
Application number
CN201610159308.XA
Other languages
Chinese (zh)
Inventor
李向阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yuzhou Kunlun Mold Co Ltd
Original Assignee
Yuzhou Kunlun Mold Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yuzhou Kunlun Mold Co Ltd filed Critical Yuzhou Kunlun Mold Co Ltd
Priority to CN201610159308.XA priority Critical patent/CN105728648A/en
Publication of CN105728648A publication Critical patent/CN105728648A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/20Stack moulds, i.e. arrangement of multiple moulds or flasks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/24Moulds for peculiarly-shaped castings for hollow articles

Abstract

The invention discloses a method for manufacturing a blank of a pipe clamp and belongs to the field of construction. The method comprises the following steps that 1, a pipe clamp precoated sand mold is designed and manufactured according to a design drawing of the pipe clamp; 2, the precoated sand mold of the pipe clamp is placed on an automatic molding machine, and a precoated sand pouring sand shell model and a sand core model are manufactured; 3, pouring is carried out; and 4, a casting is taken out and cleaned. The method has the beneficial effects that production of the blank of the pipe clamp can be efficiently achieved, materials and manpower can be saved, and the mechanical machining amount can be reduced; and casting defects can be reduced, the yield is increased, and automatic production can be easily achieved.

Description

A kind of blank manufacture method of pipe clamp
Technical field
The invention belongs to building field, particularly to the blank manufacture method of a kind of pipe clamp.
Background technology
Pipe clamp is a kind of a kind of pipe connecting element replacing conventional metals pipeline to connect that building field and attached pipeline field are conventional, such as Fig. 1;Traditional metallic conduit, when each length of tubing is connected by needs, generally requires the two ends manufacturing flange at pipeline, installs sealing gasket additional between two flanges, bolt is adopted to be locked by two flanges, just complete the connection of two pipelines, this firm and reliable connection, but installation and removal trouble;Therefore people have employed the Flange joint of pipe clamp replacement metallic conduit in suitable diameter range, its principle is to produce convex edge at the two ends of pipeline, after two convex edge alignment, pipe clamp is stuck in the convex edge place of tube end, locking pipe clamp, is achieved that the connection of two pipelines, quick and convenient, so pipe clamp connected mode becomes the common method that the metallic conduit of diameter 100-300 millimeter connects, especially for the pipeline of temporary pipeline, often the pipeline such as concrete pump of dismounting, fire protection pipeline etc.;In irregular shape due to pipe clamp, size and intensity there is certain requirement simultaneously, the blank processing of existing pipe clamp adopts lost-wax casting or the method adopting sand casting mostly, these method costs are high, technological process is long, time-consuming take a lot of work, and the pipe clamp blank allowance produced is big, waste material and processing charges.
Summary of the invention
Produce the problems referred to above existed for existing pipe clamp blank, the present invention proposes the blank manufacture method of a kind of pipe clamp, it is characterised in that: comprise the following steps: one, the design drawing according to pipe clamp, manufacture and design pipe clamp precoated sand mould;Two, the precoated sand mould of pipe clamp is put on automatic moulding machine and produces precoated sand cast arenaceous shell model and core model;Three, cast;Four, take out foundry goods and clear up.
Pipe clamp precoated sand mould described in described step one refer to adopt ferrous materials make for making arenaceous shell and the mould of core model;It is characterized in that: include pipe clamp arenaceous shell mould, pipe clamp core mold;Described pipe clamp arenaceous shell mould is for making the external shape of pipe clamp;Described core mold is for making the interior shape of pipe clamp.
Described pipe clamp arenaceous shell mould, it is characterised in that: include mould on arenaceous shell, arenaceous shell counterdie;On described arenaceous shell, the faying face of mould and described arenaceous shell counterdie is the cast die joint of pipe clamp;On described arenaceous shell, mould and arenaceous shell counterdie are by the fixing relative position of alignment pin;On described arenaceous shell, mould forms a set of complete pipe clamp arenaceous shell profile including pipe clamp left side and pipe clamp right-hand part with mold cavity under described arenaceous shell after being involutory.
Mould on described arenaceous shell, it is characterised in that: include cope match-plate pattern, upper left die cavity, left sand inlet, installing hole, right sand inlet, upper right die cavity, position hole, passage;Described cope match-plate pattern is positioned at the periphery of upper impression, is made up of ferrous materials;Described upper left die cavity is positioned at the inside left of cope match-plate pattern;The shape of described upper left die cavity is identical with partial shape on the die joint of pipe clamp right-hand part;The size of described upper left die cavity adds the design thickness of arenaceous shell equal to the overall dimensions of the part on the die joint top of pipe clamp right-hand part;Described left sand inlet is arranged on the cope match-plate pattern on upper left die cavity top, connects with upper left die cavity inside;Described installing hole is arranged on cope match-plate pattern, mates with the installing plate of automatic arenaceous shell forming machine;Described right sand inlet is arranged on cope match-plate pattern and connects with described upper right die cavity;Described upper right die cavity is positioned at the right side of cope match-plate pattern, and its shape is identical with pipe clamp left-half profile shaped upper part;The size of described upper right die cavity adds the size of arenaceous shell thickness equal to pipe clamp left side overall dimensions;Described hole, location is positioned on cope match-plate pattern, and after being directed at the hole, location on lower bolster, its inner chamber size forms complete pipe clamp overall dimensions plus arenaceous shell gauge;Described passage is arranged on cope match-plate pattern, connects with the overflow ducts between upper left die cavity and upper right die cavity.
Described arenaceous shell counterdie, it is characterised in that: include lower bolster, passage, bottom left die cavity, left sand inlet, installing hole, right sand inlet, position hole, bottom right die cavity;Described lower bolster is made up of ferrous materials, is positioned at the periphery of die cavity;Described passage is arranged on lower bolster and is connected with inner chamber overflow ducts;Described bottom left die cavity is positioned on the left of lower bolster, and its cavity shape is identical with the profile below pipe clamp left-half profile;The size of described bottom left die cavity adds the size of arenaceous shell thickness equal to the overall dimensions below pipe clamp left-half profile;Described left sand inlet is arranged on lower bolster, connects with bottom left die cavity;Described installing hole is arranged on lower bolster, matches with the model sheetinstallat plate on arenaceous shell automatic moulding machine;Described right sand inlet is arranged on lower bolster, is connected with bottom right die cavity;Described hole, location is arranged on lower bolster, and its position is corresponding with the hole, location on mould on arenaceous shell;Described bottom right die cavity is arranged on lower bolster, is positioned on the right side of lower bolster, and its cavity shape is identical with the profile below pipe clamp right half part profile;The size of described bottom right die cavity adds the size of arenaceous shell thickness equal to the overall dimensions below pipe clamp right half part profile.
Described pipe clamp core mold, it is characterised in that: include mould on core, core counterdie;On described core, the faying face of mould and described core counterdie is the cast die joint of pipe clamp;On described arenaceous shell, mould and arenaceous shell counterdie are by the fixing relative position of alignment pin;On described core, mould forms pipe clamp cavity shape after being involutory with mold cavity under described core.
Mould on described core, it is characterised in that: include cope match-plate pattern, position hole, upper left die cavity, left sand inlet, passage, installing hole, upper right die cavity, right sand inlet;Described cope match-plate pattern is positioned at the periphery of upper impression, is made up of ferrous materials;Described hole, location is positioned on cope match-plate pattern, and after being directed at the hole, location on lower bolster, its inner chamber size forms complete pipe clamp inner chamber size;Described upper left die cavity is positioned at the inside left of cope match-plate pattern;Part interior shape and equivalently-sized on the shape and size of described upper left die cavity and the die joint of pipe clamp right-hand part;Described left sand inlet is arranged on the cope match-plate pattern on upper left die cavity top, connects with upper left die cavity inside;Described passage is arranged on cope match-plate pattern, connects with the overflow ducts between upper left die cavity and upper right die cavity;Described installing hole is arranged on cope match-plate pattern, mates with the installing plate of automatic core forming machine;The upper right die cavity stated is positioned at the right side of cope match-plate pattern, and its shape and size are identical with pipe clamp left-half profile upper interior portion shape and size;Described right sand inlet is arranged on cope match-plate pattern, connects with described upper right die cavity.
Described core counterdie, it is characterised in that: include lower bolster, position hole, bottom left die cavity, left sand inlet, passage, right sand inlet, bottom right die cavity, installing hole;Described lower bolster is positioned at the periphery of lower impressions, is made up of ferrous materials;Described hole, location is positioned on lower bolster, and after being directed at the hole, location on cope match-plate pattern, its inner chamber size forms complete pipe clamp inner chamber size;Described bottom left die cavity is positioned at the inside left of lower bolster;Part interior shape and equivalently-sized on the shape and size of described bottom left die cavity and the die joint of pipe clamp right-hand part;Described left sand inlet is arranged on the lower bolster on bottom left die cavity top, connects with bottom left die cavity inside;Described passage is arranged on lower bolster, connects with the overflow ducts between bottom left die cavity and bottom right die cavity;Described installing hole is arranged on lower bolster, mates with the installing plate of automatic core forming machine;The bottom right die cavity stated is positioned at the right side of lower bolster, and its shape and size are identical with pipe clamp left-half profile upper interior portion shape and size;Described right sand inlet is arranged on lower bolster, connects with described bottom right die cavity.
The making of the described arenaceous shell in step 2 refers to and is placed on arenaceous shell forming machine by arenaceous shell mould, inject precoated sand pressurized, heated sizing and solidifying therein, form the cavity body identical with pipe clamp overall dimensions with certain thickness inner chamber size of tubulation card cast.
Core making in described step 2 refers to and core mold is placed on core forming machine, injects precoated sand and heat-shaping solidifies, form the core identical with pipe clamp inside dimension shape of pipe clamp cast in core mold.
The described arenaceous shell in step 2 or core automatic moulding machine are a kind of double precoated sand arenaceous shell automatic moulding machines, it is characterised in that: include right mould bases, frame, hydraulic system, mould bases moves device, mould bases plate, compressed air system, controls system, sandbox, sand hopper, left mould frame;Described right fixing of the forming frame moves device right-hand member at mould bases, including mould bases plate, Die and mould plate, guiding support bar;Described frame includes base, support, and described floor installation is in the bottom of double precoated sand arenaceous shell automatic moulding machine;Described support is arranged on base;Described hydraulic system includes Hydraulic Station, controls element, hydraulic cylinder;Described mould bases moves device and is arranged on base, including mobile working platform;Described mobile working platform can on base transverse shifting;Described mould bases plate is arranged on left mould frame and the two ends of right mould bases, is connected with guiding support bar two ends respectively;Described compressed air system includes source of the gas, air accumulator, cylinder;Described control system includes controller, sensor, programmer, parameter setting apparatus;Described sandbox is arranged in frame;Described sand hopper is arranged on left mould frame and the top of right mould bases;Described left mould frame is arranged on mould bases, and to move the left end of device symmetrical with right mould bases.
Described step 3 refers to and the precoated sand arenaceous shell made and core is combined, and chamber cast within it enters the molten iron that proportioning meets the fusing of pipe clamp material component requirements.
Described step 4 is naturally defeated and dispersed after being cooled down by the precoated sand arenaceous shell having poured into a mould molten iron, takes out inner casts, clears up cast gate, rising head, and residual impurity, enters next process and carry out heat treatment and machining.
Beneficial effect
The beneficial effects of the present invention is, it is possible to efficiently realize the production of braking dish blank, save material and artificial, reduce machining amount, reduce casting flaw, improve yield rate, easily realize automated production.
Accompanying drawing explanation
Fig. 1 is the structural representation of pipe clamp in the present invention
A. pipe clamp right-hand part, B. pipe clamp left side.
Fig. 2 is the structural representation of pipe clamp precoated sand mould
C. pipe clamp arenaceous shell mould, D. pipe clamp core mold.
Fig. 3 is the structural representation of pipe clamp arenaceous shell mould
1. mould on arenaceous shell, 2. arenaceous shell counterdie.
Fig. 4 is the structural representation of pipe clamp core mold
2. mould on core, 4. core counterdie.
Fig. 5 is the structural representation of mould on arenaceous shell
11. cope match-plate pattern, 12. upper left die cavities, 13. left sand inlets, 14. installing holes, 15. right sand inlets, 16. upper right die cavities, 17. holes, location, 18. passages.
Fig. 6 is the structural representation of arenaceous shell counterdie
21. lower bolster, 22. passages, 23. bottom left die cavities, 24. left sand inlets, 25. installing holes, 26. right sand inlets, 27. holes, location, 28. bottom right die cavities.
Fig. 7 is the structural representation of mould on core
31. cope match-plate pattern, 32. holes, location, 33. upper left die cavities, 34. left sand inlets, 35. passages, 36. installing holes, 37. upper right die cavities, 38. right sand inlets.
Fig. 8 is the structural representation of core counterdie
41. lower bolster, 42. holes, location, 43. bottom left die cavities, 44. left sand inlets, 45. passages, 46. right sand inlets, 47. bottom right die cavities, 48. installing holes.
Detailed description of the invention
In order to further illustrate technical scheme, in conjunction with accompanying drawing, the specific embodiment of the present invention is described, such as Fig. 1 to Fig. 8, design drawing according to pipe clamp, for the pipe clamp of 125 millimeters of steel pipes of diameter in this example, pipe clamp is divided into right-hand part A and left side B, and two halves close up and penetrate locking pin, complete the connection of metal tube;The overall dimensions of pipe clamp is amplified 8-12 millimeter, make pipe clamp arenaceous shell mould C, this example is selected the longitudinal median plane of pipe clamp as cast die joint, with die joint for boundary, in order to improve work efficiency, this example adopt every mold make the arenaceous shell of left side B and right-hand part A and the core of pipe clamp simultaneously;And pipe clamp arenaceous shell mould C and pipe clamp core mold D is produced respectively centered by the die joint of pipe clamp on arenaceous shell mould 3 and core counterdie 4 on mould 1 and arenaceous shell counterdie 2 and core;Arenaceous shell adopt the steel plate of thickness 50 millimeters as cope match-plate pattern 11 on mould 1 in this example, cope match-plate pattern 11 is produced upper left die cavity 12 respectively, left sand inlet 13, installing hole 14, right sand inlet 15, upper right die cavity 16, hole 17, location, passage 18, and match with arenaceous shell counterdie 2, the same steel plate selecting thickness 50 millimeters makes the lower bolster 21 of arenaceous shell counterdie 2, and on lower bolster 21, produce passage 22 respectively, bottom left die cavity 23, left sand inlet 24, installing hole 25, right sand inlet 26, hole 27, location, bottom right die cavity 28, mould on arenaceous shell 1 is relative with arenaceous shell counterdie 2 die cavity open face, composition pipe clamp arenaceous shell mould C;The same steel plate cope match-plate pattern 31 as mould on core 3 selecting thickness 50 millimeters, produces hole 32, location, upper left die cavity 33, left sand inlet 34, passage 35, installing hole 36, upper right die cavity 37, right sand inlet 38 respectively on cope match-plate pattern 31;Select the steel plate lower bolster 41 as core counterdie 4 of thickness 50 millimeters, and on lower bolster 41, produce hole 42, location respectively, bottom left die cavity 43, left sand inlet 44, passage 45, right sand inlet 46, bottom right die cavity 47, installing hole 48, and close up relative with core counterdie 4 die cavity opening direction for mould on core 3, alignment pin is adopted to insert hole, location 32 and hole 42, location respectively so that it is position is fixed;During application, the pipe clamp arenaceous shell mould C and pipe clamp core mold D that will make, it is installed on the mould bases of arenaceous shell automatic moulding machine, what adopt in this example is double arenaceous shell core forming machine, pipe clamp arenaceous shell mould C is arranged on the left side mould bases of arenaceous shell core forming machine, pipe clamp core mold D is arranged on the right side mould bases of arenaceous shell core forming machine;Start the control system of arenaceous shell core forming machine, the Hydraulic Cylinder mold mounting plate of hydraulic system move on the arenaceous shell so that pipe clamp arenaceous shell mould C and pipe clamp core mold D mould 1 and arenaceous shell counterdie 2 close to and compress, on core mould 3 and core counterdie 4 close to and compress;The control system of arenaceous shell core forming machine passes through information acquisition system, instruction compression air system starts and opens the passage of sandbox and sand hopper, the precoated sand that proportioning is good is made to enter sand hopper and enter dies cavity by the sand export of sand hopper, precoated sand is compacted under pressure, control system command heating system mould is heated, and then the precoated sand in heating mould, so as to degeneration solidifies, temperature sensor real-time detection heating-up temperature also feeds back to control element, to control the constant of heating-up temperature;After arenaceous shell or core solidify, mould is separated by the hydraulic cylinder controlling system command hydraulic system, takes out arenaceous shell or core, just completes the manufacturing process of arenaceous shell and core.
The arenaceous shell made and core are placed on cast place, core is put into inside arenaceous shell according to the structure of pipe clamp, fusing molten iron good for proportioning is poured in arenaceous shell, after cooling, open arenaceous shell, take out foundry goods, cast gate and rising head are removed, and clear up the impurity on spray, just complete the production of the blank of braking dish.
Automated production during due to the production of arenaceous shell and core, it is possible to produce in enormous quantities, overcome the complexity of clay-bonded sand or phenolic sand molding, save a large amount of Foundry quartz sand, reduce production cost and labor intensity;Arenaceous shell and core mold long service life, overcome wooden model or the short-life shortcoming of aluminum dipping form simultaneously.

Claims (1)

1. the blank manufacture method of a pipe clamp, it is characterised in that: comprise the following steps: one, the design drawing according to pipe clamp, manufacture and design pipe clamp precoated sand mould;Two, the precoated sand mould of pipe clamp is put on automatic moulding machine and produces precoated sand cast arenaceous shell model and core model;Three, cast;Four, take out foundry goods and clear up.
CN201610159308.XA 2016-03-21 2016-03-21 Method for manufacturing blank of pipe clamp Withdrawn CN105728648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610159308.XA CN105728648A (en) 2016-03-21 2016-03-21 Method for manufacturing blank of pipe clamp

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Application Number Priority Date Filing Date Title
CN201610159308.XA CN105728648A (en) 2016-03-21 2016-03-21 Method for manufacturing blank of pipe clamp

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CN106040974A (en) * 2016-06-25 2016-10-26 韶关市新世科壳型铸造有限公司 Casting technology for manufacturing container corner fitting
CN106077516A (en) * 2016-08-11 2016-11-09 李向阳 A kind of blank manufacture method of gear box of tractor
CN106077469A (en) * 2016-08-11 2016-11-09 李向阳 A kind of blank manufacture method of gear box of tractor
CN106077468A (en) * 2016-08-11 2016-11-09 李向阳 A kind of blank manufacture method of gear box of tractor
CN106111900A (en) * 2016-08-11 2016-11-16 李向阳 A kind of blank manufacture method of gear box of tractor
CN106141085A (en) * 2016-08-11 2016-11-23 李向阳 A kind of blank manufacture method of gear box of tractor
CN106141101A (en) * 2016-08-11 2016-11-23 李向阳 A kind of blank manufacture method of gear box of tractor
CN106141084A (en) * 2016-08-11 2016-11-23 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180550A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180554A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180555A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180553A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180551A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180549A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180552A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180548A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180557A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180556A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106270386A (en) * 2016-08-11 2017-01-04 李向阳 A kind of blank manufacture method of gear box of tractor
CN106270387A (en) * 2016-08-11 2017-01-04 李向阳 A kind of blank manufacture method of gear box of tractor
CN106270385A (en) * 2016-08-11 2017-01-04 李向阳 A kind of blank manufacture method of gear box of tractor
CN107052238A (en) * 2017-06-26 2017-08-18 禹州市昆仑模具有限公司 A kind of core mould of front suspension after-poppet
CN107138690A (en) * 2017-06-21 2017-09-08 禹州市昆仑模具有限公司 A kind of upper mould of bucket tooth precoated sand mould
CN107138691A (en) * 2017-06-21 2017-09-08 禹州市昆仑模具有限公司 A kind of lower mould of bucket tooth precoated sand mould
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CN107186176A (en) * 2017-06-21 2017-09-22 禹州市昆仑模具有限公司 A kind of lower mould of bearing block precoated sand mould
CN107321930A (en) * 2017-06-21 2017-11-07 禹州市昆仑模具有限公司 A kind of blank manufacture method of bucket tooth
CN107350426A (en) * 2017-06-21 2017-11-17 禹州市昆仑模具有限公司 A kind of blank preparation method of bearing block
CN112756914A (en) * 2020-12-30 2021-05-07 佛山市南海力格模具五金有限公司 Method for producing metal pipe hoop
KR102420697B1 (en) * 2021-02-25 2022-07-14 대경에이티 주식회사 Pipe connecting clamp and mold for manufacturing the same

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CN106040974A (en) * 2016-06-25 2016-10-26 韶关市新世科壳型铸造有限公司 Casting technology for manufacturing container corner fitting
CN106040974B (en) * 2016-06-25 2019-01-18 韶关市新世科壳型铸造有限公司 For making the casting technique of container angle
CN106180557A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106111900A (en) * 2016-08-11 2016-11-16 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180556A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106141085A (en) * 2016-08-11 2016-11-23 李向阳 A kind of blank manufacture method of gear box of tractor
CN106141101A (en) * 2016-08-11 2016-11-23 李向阳 A kind of blank manufacture method of gear box of tractor
CN106141084A (en) * 2016-08-11 2016-11-23 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180550A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180554A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180555A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180553A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180551A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180549A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
CN106180552A (en) * 2016-08-11 2016-12-07 李向阳 A kind of blank manufacture method of gear box of tractor
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CN106270387A (en) * 2016-08-11 2017-01-04 李向阳 A kind of blank manufacture method of gear box of tractor
CN106270385A (en) * 2016-08-11 2017-01-04 李向阳 A kind of blank manufacture method of gear box of tractor
CN106077516A (en) * 2016-08-11 2016-11-09 李向阳 A kind of blank manufacture method of gear box of tractor
CN107138690A (en) * 2017-06-21 2017-09-08 禹州市昆仑模具有限公司 A kind of upper mould of bucket tooth precoated sand mould
CN107138691A (en) * 2017-06-21 2017-09-08 禹州市昆仑模具有限公司 A kind of lower mould of bucket tooth precoated sand mould
CN107175318A (en) * 2017-06-21 2017-09-19 禹州市昆仑模具有限公司 A kind of upper mould of bearing block precoated sand mould
CN107186176A (en) * 2017-06-21 2017-09-22 禹州市昆仑模具有限公司 A kind of lower mould of bearing block precoated sand mould
CN107321930A (en) * 2017-06-21 2017-11-07 禹州市昆仑模具有限公司 A kind of blank manufacture method of bucket tooth
CN107350426A (en) * 2017-06-21 2017-11-17 禹州市昆仑模具有限公司 A kind of blank preparation method of bearing block
CN107052238A (en) * 2017-06-26 2017-08-18 禹州市昆仑模具有限公司 A kind of core mould of front suspension after-poppet
CN107052238B (en) * 2017-06-26 2019-04-12 禹州市昆仑模具有限公司 A kind of core mould of front suspension after-poppet
CN112756914A (en) * 2020-12-30 2021-05-07 佛山市南海力格模具五金有限公司 Method for producing metal pipe hoop
KR102420697B1 (en) * 2021-02-25 2022-07-14 대경에이티 주식회사 Pipe connecting clamp and mold for manufacturing the same

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