CN105401078A - Method for producing automobile engine rocker shaft - Google Patents

Method for producing automobile engine rocker shaft Download PDF

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Publication number
CN105401078A
CN105401078A CN201510735869.5A CN201510735869A CN105401078A CN 105401078 A CN105401078 A CN 105401078A CN 201510735869 A CN201510735869 A CN 201510735869A CN 105401078 A CN105401078 A CN 105401078A
Authority
CN
China
Prior art keywords
parts
weighshaft
sodium
rocker shaft
automobile engine
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.)
Pending
Application number
CN201510735869.5A
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Chinese (zh)
Inventor
沈四海
沈军
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.)
Hefei Haiyuan Machinery Co Ltd
Original Assignee
Hefei Haiyuan Machinery 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 Hefei Haiyuan Machinery Co Ltd filed Critical Hefei Haiyuan Machinery Co Ltd
Priority to CN201510735869.5A priority Critical patent/CN105401078A/en
Publication of CN105401078A publication Critical patent/CN105401078A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/007—Heat treatment of ferrous alloys containing Co
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C23C22/33—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates

Abstract

The invention discloses a method for producing an automobile engine rocker shaft. The method includes the machining steps that a rocker shaft blank is manufactured through the casting process, and the rocker shaft blank is controlled to comprise chemical components, by weight, of 1.85%-2.15% of C, 0.35%-0.65% of Mn, 0.85%-0.95% of Si, 0.05%-0.09% of W, 0.015%-0.045% of P, 0.015%-0.045% of S, 0.45%-0.75% of Ni, 0.025%-0.045% of V, 0.02%-0.03% of Nb, 0.15%-0.25% of Co, and the balance Fe. According to the method for producing the automobile engine rocker shaft, the processes of thermal treatment, phosphating and blackening are adopted, so that the problems of delayed fracture and fatigue fracture of the high-strength rocker shaft are solved; in use, the rocker shaft is reliable in connection and not prone to breakage, the service life of the rocker shaft is prolonged, and the use requirements for the high-strength rocker shaft of all industries of the society are met.

Description

Rocker arm shaft of automobile engine production method
Technical field
The present invention relates to motor rockshaft field, especially a kind of rocker arm shaft of automobile engine production method.
Background technology
It is faster that weighshaft and rocking arm can not make camshaft promote the speed of valve; weighshaft Main Function supports rocking arm; and the main effect of rocking arm is the convenient size regulating valve to open; because have adjusting bolt above rocking arm, can the size opened of adjustment valve easy to adjust make the speed of air inlet and exhaust adjusted.
Given this, be necessary to provide a kind of more advanced rocker arm shaft of automobile engine production method.
Summary of the invention
The object of the invention is to avoid weak point of the prior art, and a kind of rocker arm shaft of automobile engine production method is provided.
Object of the present invention is as follows by the following technical programs:
Rocker arm shaft of automobile engine production method, procedure of processing comprises:
A, obtain weighshaft blank by casting technique, the weight percent controlling each chemical composition of weighshaft blank should meet following requirement: C1.85 ~ 2.15, Mn0.35 ~ 0.65, Si0.85 ~ 0.95, W0.05-0.09,0.015≤P≤0.045,0.015≤S≤0.045, Ni0.45 ~ 0.75, V0.025 ~ 0.045, Nb0.02 ~ 0.03, Co0.15 ~ 0.25, and surplus is iron;
B, the weighshaft after mechanical workout to be heated 3 hours at 560-650 DEG C, 1080-1140 DEG C is warming up in 15-20 minute, keep temperature 30-40 minute, quench with quenching oil, again the weighshaft after quenching is carried out tempering at 500 DEG C and keep 60-70 minute, then taking-up puts into 300-320 DEG C of No. 200 solvent oils with oily slow cooling from tempering stove;
C, blackening process, be under the condition of 320 ~ 430 DEG C in temperature, weighshaft being placed in process in sodium nitrite solution is grey black or all black to surface, is then taken out from sodium nitrite solution by weighshaft, and spontaneous curing 55 ~ 70min, more fully clean with water, air-dry;
D, bonderizing; weighshaft surface treatment with Phosphating Solution by weight; it is characterized in that, be made up of following raw material: 40-42 part phosphoric acid, 22-24 part vinylformic acid, 8-10 part dimethylbenzene, 1.4-2.6 part chromium sesquioxide, 3.5-5.5 part sodium hydroxide, 2-6 part sodium phosphate, 3-8 part Sodium Pyrosulfite, 2.5-4.5 part trisodium phosphate, 6-10 part sodium bicarbonate, 4-6 part tetramine, 2-4 part tetraethoxy condenses, 20-30 part distilled water.
Described Phosphating Solution by weight, it is characterized in that, be made up of following raw material: 41 parts of phosphoric acid, 23 parts of vinylformic acid, 9 parts of dimethylbenzene, 2 parts of chromium sesquioxides, 45 parts of sodium hydroxide, 4 parts of sodium phosphates, 5 parts of Sodium Pyrosulfites, 3.5 parts of trisodium phosphates, 8 parts of sodium bicarbonates, 5 parts of tetramine, 3 parts of tetraethoxy condensess, 25 parts of distilled water.
Rocker arm shaft of automobile engine production method of the present invention, adopt thermal treatment, bonderizing, blackening processing technology, solve delayed fracture and the repeated stress failure of high-strength lower rocker axle, in use connect reliable, not frangibility, improve the weighshaft life-span, meet the upper every profession and trade of society to the user demand of high strength weighshaft.
Embodiment
The invention will be further described with the following Examples:
Rocker arm shaft of automobile engine production method, procedure of processing comprises:
A, obtain weighshaft blank by casting technique, the weight percent controlling each chemical composition of weighshaft blank should meet following requirement: C1.85 ~ 2.15, Mn0.35 ~ 0.65, Si0.85 ~ 0.95, W0.05-0.09,0.015≤P≤0.045,0.015≤S≤0.045, Ni0.45 ~ 0.75, V0.025 ~ 0.045, Nb0.02 ~ 0.03, Co0.15 ~ 0.25, and surplus is iron;
B, the weighshaft after mechanical workout to be heated 3 hours at 560-650 DEG C, 1080-1140 DEG C is warming up in 15-20 minute, keep temperature 30-40 minute, quench with quenching oil, again the weighshaft after quenching is carried out tempering at 500 DEG C and keep 60-70 minute, then taking-up puts into 300-320 DEG C of No. 200 solvent oils with oily slow cooling from tempering stove;
C, blackening process, be under the condition of 320 ~ 430 DEG C in temperature, weighshaft being placed in process in sodium nitrite solution is grey black or all black to surface, is then taken out from sodium nitrite solution by weighshaft, and spontaneous curing 55 ~ 70min, more fully clean with water, air-dry;
D, bonderizing; weighshaft surface treatment with Phosphating Solution by weight; it is characterized in that, be made up of following raw material: 41 parts of phosphoric acid, 23 parts of vinylformic acid, 9 parts of dimethylbenzene, 2 parts of chromium sesquioxides, 45 parts of sodium hydroxide, 4 parts of sodium phosphates, 5 parts of Sodium Pyrosulfites, 3.5 parts of trisodium phosphates, 8 parts of sodium bicarbonates, 5 parts of tetramine, 3 parts of tetraethoxy condensess, 25 parts of distilled water.
The weighshaft that method produced according to the present invention is produced, as follows through its mechanical property numerical value of detection experiment; weighshaft centre hardness reaches 52-55HRC, weighshaft surface hardness reaches 46-50HRC; tensile strength reaches 1155Mpa; its wear resisting property is high, and maximum hardness is 62HRC, improves more than 30% than SKD11; heat treatment deformation SKD11 is low by 35%, machinability is 2.2 times of SKD11.
Finally should be noted that; above embodiment is only for illustration of technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.

Claims (2)

1. rocker arm shaft of automobile engine production method, is characterized in that, procedure of processing comprises:
A, obtain weighshaft blank by casting technique, the weight percent controlling each chemical composition of weighshaft blank should meet following requirement: C1.85 ~ 2.15, Mn0.35 ~ 0.65, Si0.85 ~ 0.95, W0.05-0.09,0.015≤P≤0.045,0.015≤S≤0.045, Ni0.45 ~ 0.75, V0.025 ~ 0.045, Nb0.02 ~ 0.03, Co0.15 ~ 0.25, and surplus is iron;
B, the weighshaft after mechanical workout to be heated 3 hours at 560-650 DEG C, 1080-1140 DEG C is warming up in 15-20 minute, keep temperature 30-40 minute, quench with quenching oil, again the weighshaft after quenching is carried out tempering at 500 DEG C and keep 60-70 minute, then taking-up puts into 300-320 DEG C of No. 200 solvent oils with oily slow cooling from tempering stove;
C, blackening process, be under the condition of 320 ~ 430 DEG C in temperature, weighshaft being placed in process in sodium nitrite solution is grey black or all black to surface, is then taken out from sodium nitrite solution by weighshaft, and spontaneous curing 55 ~ 70min, more fully clean with water, air-dry;
D, bonderizing; weighshaft surface treatment with Phosphating Solution by weight; it is characterized in that, be made up of following raw material: 40-42 part phosphoric acid, 22-24 part vinylformic acid, 8-10 part dimethylbenzene, 1.4-2.6 part chromium sesquioxide, 3.5-5.5 part sodium hydroxide, 2-6 part sodium phosphate, 3-8 part Sodium Pyrosulfite, 2.5-4.5 part trisodium phosphate, 6-10 part sodium bicarbonate, 4-6 part tetramine, 2-4 part tetraethoxy condenses, 20-30 part distilled water.
2. rocker arm shaft of automobile engine production method according to claim 1, it is characterized in that: described Phosphating Solution by weight, it is characterized in that, be made up of following raw material: 41 parts of phosphoric acid, 23 parts of vinylformic acid, 9 parts of dimethylbenzene, 2 parts of chromium sesquioxides, 45 parts of sodium hydroxide, 4 parts of sodium phosphates, 5 parts of Sodium Pyrosulfites, 3.5 parts of trisodium phosphates, 8 parts of sodium bicarbonates, 5 parts of tetramine, 3 parts of tetraethoxy condensess, 25 parts of distilled water.
CN201510735869.5A 2015-11-03 2015-11-03 Method for producing automobile engine rocker shaft Pending CN105401078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510735869.5A CN105401078A (en) 2015-11-03 2015-11-03 Method for producing automobile engine rocker shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510735869.5A CN105401078A (en) 2015-11-03 2015-11-03 Method for producing automobile engine rocker shaft

Publications (1)

Publication Number Publication Date
CN105401078A true CN105401078A (en) 2016-03-16

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Family Applications (1)

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CN201510735869.5A Pending CN105401078A (en) 2015-11-03 2015-11-03 Method for producing automobile engine rocker shaft

Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105886890A (en) * 2016-06-20 2016-08-24 马鞍山市益丰实业集团有限公司 Abrasion-resistant ductile cast iron ball preparation method
CN106381449A (en) * 2016-09-23 2017-02-08 安徽丰磊制冷工程有限公司 Preparation method of low-alloy air purifier filter screen
CN108165720A (en) * 2017-12-29 2018-06-15 重庆全茂合渝科技有限公司 A kind of process of surface treatment of the automobile-used valve lever pin of motor
CN108193143A (en) * 2017-12-29 2018-06-22 重庆全茂合渝科技有限公司 A kind of processing technology of high-strength abrasion-proof valve lever pin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103084798A (en) * 2012-12-04 2013-05-08 安徽六方重联机械股份有限公司 Method for forging high-strength bolt
CN103084523A (en) * 2012-12-04 2013-05-08 安徽六方重联机械股份有限公司 Method for machining high-strength U-shaped bolt
CN103084797A (en) * 2012-12-04 2013-05-08 安徽六方重联机械股份有限公司 Method for forging bolt for caterpillar track of excavator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103084798A (en) * 2012-12-04 2013-05-08 安徽六方重联机械股份有限公司 Method for forging high-strength bolt
CN103084523A (en) * 2012-12-04 2013-05-08 安徽六方重联机械股份有限公司 Method for machining high-strength U-shaped bolt
CN103084797A (en) * 2012-12-04 2013-05-08 安徽六方重联机械股份有限公司 Method for forging bolt for caterpillar track of excavator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
上海工具厂: "《刀具热处理》", 28 February 1971, 上海人民出版社 *
李丽波等: "《表面预处理实用手册》", 31 January 2014, 机械工业出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105886890A (en) * 2016-06-20 2016-08-24 马鞍山市益丰实业集团有限公司 Abrasion-resistant ductile cast iron ball preparation method
CN106381449A (en) * 2016-09-23 2017-02-08 安徽丰磊制冷工程有限公司 Preparation method of low-alloy air purifier filter screen
CN108165720A (en) * 2017-12-29 2018-06-15 重庆全茂合渝科技有限公司 A kind of process of surface treatment of the automobile-used valve lever pin of motor
CN108193143A (en) * 2017-12-29 2018-06-22 重庆全茂合渝科技有限公司 A kind of processing technology of high-strength abrasion-proof valve lever pin

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Application publication date: 20160316

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