CN102328073B - Ratchet pin of box joint type water pump pliers and manufacture method of ratchet pin - Google Patents

Ratchet pin of box joint type water pump pliers and manufacture method of ratchet pin Download PDF

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Publication number
CN102328073B
CN102328073B CN 201110207314 CN201110207314A CN102328073B CN 102328073 B CN102328073 B CN 102328073B CN 201110207314 CN201110207314 CN 201110207314 CN 201110207314 A CN201110207314 A CN 201110207314A CN 102328073 B CN102328073 B CN 102328073B
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China
Prior art keywords
water pump
ratchet pin
pump pliers
wearing
temperature
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CN 201110207314
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Chinese (zh)
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CN102328073A (en
Inventor
申建中
姜洪亮
姜志瑜
姜基华
曾育德
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Zhejiang fire Polytron Technologies Inc
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ZHEJIANG YIHUO TECHNOLOGY Co Ltd
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Abstract

The invention discloses a ratchet pin of a pair of box joint type water pump pliers, which comprises iron, nickel and molybdenum mixed powder and a binder. The binder contains 15-24% of medical paraffin wax, 10-15% of mineral wax, 30-60% of high-density polyethylene and 15-29% of EVA (Ethylene Vinyl Acetate) resin. The manufacture method of the ratchet pin of the box joint type water pump pliers comprises the following steps of: placing the iron, nickel and molybdenum mixed powder and the binder together in a two-roller rubber refining machine to obtain feed with mobility; placing the feed inan injection forming machine and injecting to form a blank; placing the blank in a tri-polyethylene solution to be dissolved and degreased; taking out the blank and drying; and finally, placing the blank in a vacuum furnace to be sintered and cooled. The manufactured ratchet pin of the box joint type water pump pliers has the advantages of high intensity, simple manufacture process and low manufacture cost.

Description

A kind of gill water pump pliers ratchet pin and manufacture method thereof of wearing
Technical field
The present invention relates to a kind of gill water pump pliers ratchet pin and manufacture method thereof of wearing.
Background technology
In the modern production live and work, use various tools such as water pump pliers through regular meeting.The traditional water pump pliers is not only heavy, the flexible difficulty of jaw size, and shortcomings such as difficulty are carried in operation inconvenience.So naturally, a kind of novel straight mouth easy and simple to handle and easy to carry that arisen at the historic moment has the special gill water pump pliers of wearing of tooth, but its core component ratchet pin strength of materials and other mechanical performance require high and complex structure, general material is difficult to reach its requirement of strength and serviceability and processing difficulties, and cost is high.
Summary of the invention
The object of the present invention is to provide a kind of gill water pump pliers ratchet pin and manufacture method thereof of wearing, can effectively solve to have now and wear gill water pump pliers ratchet pin processing difficulties, cost height, intensity are difficult to the problem of meeting the requirements of.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of gill water pump pliers ratchet pin of wearing, comprise iron nickel molybdenum mixed-powder, bonding agent, described bonding agent comprises following component, and each component is by weight percentage: medical paraffin 15%~24%, ceresine 10%~15%, high density polyethylene (HDPE) 30%~60%, EVA resin 15%~29%.
Preferably, described iron nickel molybdenum mixed-powder comprises following component, each component by mass percentage: iron 85%~96%, nickel 4%~10%, molybdenum 0~5%; Add nickel and with the gill water pump pliers ratchet pin of wearing that molybdenum guarantees into output enough intensity is arranged.
Preferably, the volume ratio of described iron nickel molybdenum mixed-powder and bonding agent is 5: 5~7: 3; Mix the back with moulding, be convenient to automated production.
A kind of gill water pump pliers ratchet pin manufacture method of wearing may further comprise the steps successively:
A. iron nickel molybdenum mixed-powder is put into two roller rubber mixing machines with bonding agent, under 150~170 ℃ temperature mixing 1~2 hour repeatedly, obtain having mobile feeding;
B. the feeding that obtains in the steps A is placed in the injection (mo(u)lding) machine, under 130~150 ℃ of injection temperatures, injection pressure 70~90MPa, 35~45 ℃ of conditions of mould temperature, be injected into blank;
C. the blank that obtains among the step B is put into trichloro-ethylene solution, under 45~55 ℃ temperature, placed 7~8 hours, dissolve, degreasing, take out dry then;
D. dried blank among the step C is put into vacuum drying oven, vacuum 10Pa, 1250~1350 ℃ of temperature, sintering time 1~2 hour with the stove cooling, obtains wearing gill water pump pliers ratchet pin then.
Preferably, the temperature in the described steps A in the two roller rubber mixing machines is 160 ℃, mixing time 1.5 hours; Can access quality feeding preferably.
Preferably, 140 ℃ of injection temperatures among the described step B, injection pressure 80MPa, mould temperature are 40 ℃; Guarantee the quality of blank.
Preferably, blank is put into three polyethylene solutions among the described step C, places under the temperature of 50 ℃ of temperature 8 hours, dissolves, degreasing; To blank dissolve fully, degreasing, remove partial supplementary material.
Preferably, dried blank is put into vacuum drying oven among the described step D, 1300 ℃ of temperature, sintering time 1.5 hours; Can access top-quality sintering parameter of wearing gill water pump pliers ratchet pin.
Compared with prior art, advantage of the present invention is: if the ratio of medical paraffin is less than 10%, the feeding injections difficult of then making, be unfavorable for formed product, if ratio is greater than 17% then the feeding of making does not have rigidity, shaped article is too soft, deflection is big, influence product quality, the characteristics of EVA resin are to have good flexibility, elasticity as the rubber, owing in strand, introduced VAM, thereby reduced high-crystallinity, improved pliability, impact resistance, filler intermiscibility and heat seal performance do not contain solvent, free from environmental pollution and security is higher, be very suitable for the streamline production of automation, the EVA resin content is lower than 20% can be made and wear gill water pump pliers ratchet pin viscosity easy-formation not inadequately, and the EVA resin content is higher than 32% can make again when wearing the injection moulding of gill water pump pliers ratchet pin too that thickness is not easy to automated production; Adopt technique scheme become output to wear gill water pump pliers ratchet pin intensity good, and become that production. art is simple, low cost of manufacture.
The specific embodiment
Embodiment one:
A kind of gill water pump pliers ratchet pin of wearing, comprise iron nickel molybdenum mixed-powder, bonding agent, the volume ratio of described iron nickel molybdenum mixed-powder and bonding agent is 5: 5, described bonding agent comprises following component, each component is by weight percentage: medical paraffin 15%, ceresine 10%, high density polyethylene (HDPE) 60%, EVA resin 15%, described iron nickel molybdenum mixed-powder comprises following component, each component by mass percentage: iron 85%, nickel 10%, molybdenum 5%.
Embodiment two:
A kind of gill water pump pliers ratchet pin of wearing, comprise iron nickel molybdenum mixed-powder, bonding agent, the volume ratio of described iron nickel molybdenum mixed-powder and bonding agent is 6: 4, described bonding agent comprises following component, each component is by weight percentage: medical paraffin 20%, ceresine 13%, high density polyethylene (HDPE) 45%, EVA resin 22%, described iron nickel molybdenum mixed-powder comprises following component, each component by mass percentage: iron 90%, nickel 7%, molybdenum 3%.
Embodiment three:
A kind of gill water pump pliers ratchet pin of wearing, comprise iron nickel molybdenum mixed-powder, bonding agent, the volume ratio of described iron nickel molybdenum mixed-powder and bonding agent is 7: 3, described bonding agent comprises following component, each component is by weight percentage: medical paraffin 24%, ceresine 15%, high density polyethylene (HDPE) 30%, EVA resin 29%, described iron nickel molybdenum mixed-powder comprises following component, each component by mass percentage: iron 96%, nickel 4%.
Adopt above-mentioned any embodiment wear gill water pump pliers ratchet pin component ratio wear gill water pump pliers ratchet pin manufacture method, may further comprise the steps successively:
A. iron nickel molybdenum mixed-powder is put into two roller rubber mixing machines with bonding agent, under 160 ℃ temperature mixing 1.5 hours repeatedly, obtain having mobile feeding;
B. the feeding that obtains in the steps A is placed in the injection (mo(u)lding) machine, under 140 ℃ of injection temperatures, injection pressure 80MPa, 40 ℃ of conditions of mould temperature, be injected into blank;
C. the blank that obtains among the step B is put into trichloro-ethylene solution, under 50 ℃ temperature, placed 8 hours, dissolve, degreasing, take out dry then;
D. dried blank among the step C is put into vacuum drying oven, vacuum 10Pa, 1300 ℃ of temperature, sintering time 1.5 hours with the stove cooling, obtains wearing gill water pump pliers ratchet pin then.
The medical paraffin content of beary metal is very little, effectively reduce the influence to product quality, if the ratio effect 10% of medical paraffin then less to product quality influence, if greater than 17% then can make product cost too high as throwing, the characteristics of EVA resin are to have good flexibility, elasticity as the rubber, owing in strand, introduced VAM, thereby reduced high-crystallinity, improved pliability, impact resistance, filler intermiscibility and heat seal performance, do not contain solvent, free from environmental pollution and security is higher, be very suitable for the streamline production of automation, the EVA resin content is lower than 20% can be made and wear gill water pump pliers ratchet pin viscosity easy-formation not inadequately, and the EVA resin content is higher than 32% can make again when wearing the injection moulding of gill water pump pliers ratchet pin too that thickness is not easy to automated production; Adopt technique scheme become output to wear gill water pump pliers ratchet pin intensity good, and become that production. art is simple, low cost of manufacture.
The above only is specific embodiments of the invention, but technical characterictic of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of doing or modify all is encompassed among the claim of the present invention.

Claims (8)

1. wear gill water pump pliers ratchet pin for one kind, it is characterized in that: comprise iron nickel molybdenum mixed-powder, bonding agent, described bonding agent comprises following component, each component is by weight percentage: medical paraffin 15%~24%, ceresine 10%~15%, high density polyethylene (HDPE) 30%~60%, EVA resin 15%~29%, each component content sum is 100%.
2. a kind of gill water pump pliers ratchet pin of wearing as claimed in claim 1, it is characterized in that: described iron nickel molybdenum mixed-powder comprises following component, each component by mass percentage: iron 85%~96%, nickel 4%~10%, molybdenum 0~5%.
3. a kind of gill water pump pliers ratchet pin of wearing as claimed in claim 1 or 2, it is characterized in that: the volume ratio of described iron nickel molybdenum mixed-powder and bonding agent is 5:5~7:3.
4. gill water pump pliers ratchet pin manufacture method of wearing as claimed in claim 1 is characterized in that: may further comprise the steps successively:
A. iron nickel molybdenum mixed-powder is put into two roller rubber mixing machines with bonding agent, under 150~170 ℃ temperature mixing 1~2 hour repeatedly, obtain having mobile feeding;
B. the feeding that obtains in the steps A is placed in the injection (mo(u)lding) machine, under 130~150 ℃ of injection temperatures, injection pressure 70~90MPa, 35~45 ℃ of conditions of mould temperature, be injected into blank;
C. the blank that obtains among the step B is put into trichloro-ethylene solution, under 45~55 ℃ temperature, placed 7~8 hours, dissolve, degreasing, take out dry then;
D. dried blank among the step C is put into vacuum drying oven, vacuum 10Pa, 1250~1350 ℃ of temperature, sintering time 1~2 hour with the stove cooling, obtains wearing gill water pump pliers ratchet pin then.
5. a kind of gill water pump pliers ratchet pin manufacture method of wearing as claimed in claim 4 is characterized in that: the temperature in the described steps A in the two roller rubber mixing machines is 160 ℃, mixing time 1.5 hours.
6. a kind of gill water pump pliers ratchet pin manufacture method of wearing as claimed in claim 4 is characterized in that: 40 ℃ of 140 ℃ of injection temperatures among the described step B, injection pressure 80MPa, mould temperature.
7. a kind of gill water pump pliers ratchet pin manufacture method of wearing as claimed in claim 4, it is characterized in that: blank is put into trichloro-ethylene solution among the described step C, places 8 hours under the temperature of 50 ℃ of temperature, dissolves, degreasing.
8. a kind of gill water pump pliers ratchet pin manufacture method of wearing as claimed in claim 4, it is characterized in that: dried blank is put into vacuum drying oven among the described step D, 1300 ℃ of temperature, sintering time 1.5 hours.
CN 201110207314 2011-07-22 2011-07-22 Ratchet pin of box joint type water pump pliers and manufacture method of ratchet pin Active CN102328073B (en)

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CN104338928A (en) * 2014-01-10 2015-02-11 宁波市睿科金属粉末注射成型有限公司 Cutter bit of glass cutter and machining method thereof
CN107775003A (en) * 2016-08-31 2018-03-09 浙江火科技股份有限公司 A kind of method that rotating shuttle spring base is produced using metal injection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1994627A (en) * 2006-12-29 2007-07-11 北京科技大学 CuSn10 alloy injection forming method
CN101279367A (en) * 2008-05-28 2008-10-08 北京科技大学 Injection forming method for preparing high Niobium containing Ti-Al alloy components
CN101564809A (en) * 2009-05-20 2009-10-28 中南大学 Preparation method of covered metal spare parts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680163B2 (en) * 1985-02-07 1994-10-12 株式会社クボタ Method of manufacturing screw for injection molding machine having excellent wear resistance and corrosion resistance
JPH0647688B2 (en) * 1985-02-14 1994-06-22 株式会社クボタ Method for manufacturing wear-resistant cylindrical member
JPH111704A (en) * 1997-06-09 1999-01-06 Agency Of Ind Science & Technol Powder forming method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1994627A (en) * 2006-12-29 2007-07-11 北京科技大学 CuSn10 alloy injection forming method
CN101279367A (en) * 2008-05-28 2008-10-08 北京科技大学 Injection forming method for preparing high Niobium containing Ti-Al alloy components
CN101564809A (en) * 2009-05-20 2009-10-28 中南大学 Preparation method of covered metal spare parts

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Address after: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone

Patentee after: Zhejiang fire Polytron Technologies Inc

Address before: 321001 Zhejiang Province, Jinhua city Wucheng District Youth Industrial Zone

Patentee before: Zhejiang Yihuo Technology Co., Ltd.

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