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CN102363259A - Molding method for casting and forging structure piece of wheelchair frame - Google Patents

Molding method for casting and forging structure piece of wheelchair frame Download PDF

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Publication number
CN102363259A
CN102363259A CN2011102833923A CN201110283392A CN102363259A CN 102363259 A CN102363259 A CN 102363259A CN 2011102833923 A CN2011102833923 A CN 2011102833923A CN 201110283392 A CN201110283392 A CN 201110283392A CN 102363259 A CN102363259 A CN 102363259A
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China
Prior art keywords
forging
casting
blank
strand
stainless steel
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Granted
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CN2011102833923A
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CN102363259B (en
Inventor
曲荣生
孙永恒
刘玉新
林超
刘放顺
崔春阳
王艺
张作家
赵文举
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Harbin Hafei Industry Co Ltd
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Harbin Hafei Industry Co Ltd
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Priority to CN 201110283392 priority Critical patent/CN102363259B/en
Publication of CN102363259A publication Critical patent/CN102363259A/en
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Publication of CN102363259B publication Critical patent/CN102363259B/en
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Abstract

The invention provides a molding method for casting and forging a structure piece of a wheelchair frame, which comprises the steps of: sawing and cutting an aluminum cast ingot with the outer circle of phi 200mm with a material trade mark of 6061 into blank with the length of 800mm; smelting; pouring; modeling; cutting a dead head; charging a casting blank, heating and fixing the temperature at 530 DEG C; forging and pressing the casting blank by a 5000-ton oil press and a forging mould; forging and pressing to obtain a forged piece; etching and washing; treating with solid solution; and manually correcting the specific deformation degree of the forged piece. The precast blank is cast and molded by the method, the shape of the blank is good in consistency, the shape of a curved surface is easy to control, a casting material can be cyclically utilized, and the material utilization can be furthest improved; and the batch production practice proves that the finished forged piece produced by a casting and forging technological process has no forging defects, the thermal treatment performance meets the demand, and the final status of the forged piece completely accords with user demand.

Description

Wheelchair frame structural member casting and forging molding method
(1) technical field
The present invention relates to casting and forge process technology, is exactly a kind of wheelchair frame structural member casting and forging molding method specifically.
(2) background technology
Forging is widely used in the important force structure position on the various device with its superior mechanical performance; Wherein aluminum alloy forge piece becomes the maximum forging of application in the non-ferrous metal forging with its in light weight, corrosion-resistant advantage such as good again; In fields such as automobile, Aero-Space, locomotive, shipbuildings application is very widely arranged all, its output is only second to the ferrous metal forging.The wheelchair frame structural member is the important stress members on a kind of wheelchair; The former employing steel pipe of offshore company is welded; But weight is heavier; Profile is common not to have sight, problem such as the forging that the structural parts whole forging molding process of domestic research and development and Technology for Heating Processing are produced exists material use low than rate, and operation is loaded down with trivial details.
(3) summary of the invention
The object of the present invention is to provide a kind of wheelchair frame structural member casting and forging molding method.
The objective of the invention is to realize like this: step is following:
Step 1: blanking: with material trademark is that 6061 cylindrical φ 200mm aluminium ingot casting sawing becomes the long blank of 800mm;
Step 2: melting: place crucible to heat blank, constant temperature is heated to fusing for 650 ℃;
Step 3: mould assembly: rising head and mold cavity surface at casting mould are smeared releasing agent, close tight casting mould, urgent geometrical clamp;
Step 4: cast: contain 4.5 kilograms of the liquid aluminium get after the blank fusing with crucible, be poured into die cavity to die cavity from the sprue gate and be full of fully;
Step 5: removing from mould: open geometrical clamp, molded blank is taken out in the casting mould die sinking;
Step 6: cut rising head: utilize toothless saw excision rising head, obtain strand;
Step 7: cleaning defective: cleaning finishing strand rising head position and blemish;
Step 8: homogenizing annealing: 530 ℃ of strand shove charge heating constant temperatures; Insulation: 4 hours, insulation finished can carry out mold pressing production after the back strand is cooled to 470 ℃ with stove;
Step 9: forging mold preheating: heating constant temperature: 400 ℃; Insulation: 4 hours;
Step 10: mold pressing: utilize 5000 tons of hydraulic presses and forging mold that the strand that step 8 obtains is forged and pressed, obtain forging after the forging and pressing;
Step 11: cut edge: utilize 800 tons of punch presses and edger that forging is carried out cold-trim(ming) after the forging cooling;
Step 12: erosion is washed: 1: ungrease treatment: with the forging stock stainless steel framework of packing into, immersed the alkali groove 10-15 minute, tank liquor temperature: 50-60 ℃; 2: the warm water washing: the stainless steel framework that forging stock will be housed immersed warm water tank 1-4 minute, water temperature: 50-60 ℃; 3: cold water washing: the stainless steel framework that forging stock will be housed immersed cold rinse bank 1-4 minute, water temperature: room temperature; 4: pickling: the stainless steel framework that forging stock will be housed immerses nitric acid groove 0.5-3min till the light; 5: cold water washing: the stainless steel framework that forging stock will be housed immerses cold rinse bank flushing 1-4 minute, water temperature: room temperature; 6: oven dry naturally;
Step 13: cleaning defective: cleaning polishing forging blemish;
Step 14: solution treatment: heating constant temperature: 530 ℃; Insulation: 1.5 hours; Entry immediately after forging is come out of the stove, forging time of staying in water is not less than 15 minutes, is not more than 17 seconds transfer time; Water temperature: 30-50 ℃;
Step 15: proofread and correct: the forging after utilizing 5000 tons of hydraulic presses and straightening die to solution treatment is proofreaied and correct;
Step 10 six: artificial aging: forging shove charge heating, constant temperature: 155 ℃; Insulation: 10 hours;
Step 10 seven: manual synchronizing: carry out manual synchronizing to the concrete deformation extent of forging;
Step 10 eight: erosion is washed: forging is lost wash the acquisition clean Surface, operate same step 12;
Step 10 nine: cleaning defective: forging is carried out monolithic finish eliminate the burr or the defective of colliding with.
A kind of wheelchair frame structural member of the present invention casting and forging molding method for solving the production problem of prefabricated blank, adopts casting and forging molding; Be that prefabricated blank adopts casting; Obtain the finished product forging through compression molding then, the shape high conformity of blank like this, curve form is easy to control; Simultaneously the casting process material can recycle, has improved stock utilization to greatest extent; In order to eliminate forging defect, adopt compression molding at twice, certain under-voltage amount is reserved in mold pressing for the first time, thoroughly repaiies wound after the mold pressing; The forging warpage is serious in the forging process, adopts twice correcting process to eliminate the forging buckling deformation here.Batch process facts have proved that the finished product forging of under this cast forging process flow process, being produced does not have forging defect, and heat treatment performance meets the requirements, and the forging end-state meets user's request fully.
(4) description of drawings:
Fig. 1 is a wheelchair frame structural member forging profile sketch map;
Fig. 2 is a wheelchair frame structural member forging strand profile sketch map;
Fig. 3 is that wheelchair frame structural member forging model cavity is arranged sketch map;
Fig. 4 is that wheelchair frame structural member forging straightening die die cavity is arranged sketch map;
Fig. 5 is a wheelchair frame structural member forging edger structural representation;
Fig. 6 is a wheelchair frame structural member forging strand casting mould structure sketch map.
(5) specific embodiment
For example the present invention is described further below in conjunction with accompanying drawing.
Embodiment 1: combine Fig. 1-Fig. 6, and a kind of wheelchair frame structural member of the present invention casting and forging molding method, step is following:
Step 1: blanking: with material trademark is that 6061 cylindrical φ 200mm aluminium ingot casting sawing becomes the long blank of 800mm;
Step 2: melting: place crucible to heat blank, constant temperature is heated to fusing for 650 ℃;
Step 3: mould assembly: rising head and mold cavity surface at casting mould are smeared releasing agent, close tight casting mould, urgent geometrical clamp;
Step 4: cast: contain 4.5 kilograms of the liquid aluminium get after the blank fusing with crucible, be poured into die cavity to die cavity from the sprue gate and be full of fully;
Step 5: removing from mould: open geometrical clamp, molded blank is taken out in the casting mould die sinking;
Step 6: cut rising head: utilize toothless saw excision rising head, obtain strand;
Step 7: cleaning defective: cleaning finishing strand rising head position and blemish;
Step 8: homogenizing annealing: 530 ℃ of strand shove charge heating constant temperatures; Insulation: 4 hours, insulation finished can carry out mold pressing production after the back strand is cooled to 470 ℃ with stove;
Step 9: forging mold preheating: heating constant temperature: 400 ℃; Insulation: 4 hours;
Step 10: mold pressing: utilize 5000 tons of hydraulic presses and forging mold that the strand that step 8 obtains is forged and pressed, obtain forging after the forging and pressing;
Step 11: cut edge: utilize 800 tons of punch presses and edger that forging is carried out cold-trim(ming) after the forging cooling;
Step 12: erosion is washed: 1: ungrease treatment: with the forging stock stainless steel framework of packing into, immersed the alkali groove 10-15 minute, tank liquor temperature: 50-60 ℃; 2: the warm water washing: the stainless steel framework that forging stock will be housed immersed warm water tank 1-4 minute, water temperature: 50-60 ℃; 3: cold water washing: the stainless steel framework that forging stock will be housed immersed cold rinse bank 1-4 minute, water temperature: room temperature; 4: pickling: the stainless steel framework that forging stock will be housed immerses nitric acid groove 0.5-3min till the light; 5: cold water washing: the stainless steel framework that forging stock will be housed immerses cold rinse bank flushing 1-4 minute, water temperature: room temperature; 6: oven dry naturally;
Step 13: cleaning defective: cleaning polishing forging blemish;
Step 14: solution treatment: heating constant temperature: 530 ℃; Insulation: 1.5 hours; Entry immediately after forging is come out of the stove, forging time of staying in water is not less than 15 minutes, is not more than 17 seconds transfer time; Water temperature: 30-50 ℃;
Step 15: proofread and correct: the forging after utilizing 5000 tons of hydraulic presses and straightening die to solution treatment is proofreaied and correct;
Step 10 six: artificial aging: forging shove charge heating, constant temperature: 155 ℃; Insulation: 10 hours;
Step 10 seven: manual synchronizing: carry out manual synchronizing to the concrete deformation extent of forging;
Step 10 eight: erosion is washed: forging is lost wash the acquisition clean Surface, operate same step 12;
Step 10 nine: cleaning defective: forging is carried out monolithic finish eliminate the burr or the defective of colliding with.
Embodiment 2: combine Fig. 1-Fig. 6, and a kind of wheelchair frame structural member of the present invention casting and forging molding method, step is following:
Step 1: blanking: with material trademark is that 6061 cylindrical φ 200mm ingot casting sawing becomes the long blank of 800mm;
Step 2: melting: place crucible to heat constant temperature blank: 650 ℃, be heated to fusing fully;
Step 3: mould assembly: smear releasing agent at casting mould (Fig. 6) rising head and mold cavity surface, close tight casting mould, urgent geometrical clamp;
Step 4: cast: 1 (Fig. 6) is poured into die cavity and is full of fully from the sprue gate to contain 4.5 kilograms of the liquid aluminium get after the blank fusing with crucible, is poured into the rising head die cavity from rising head 2,3 successively again and is full of liquid aluminium;
Step 5: removing from mould: open geometrical clamp, slowly separately, take out molded blank with the casting mould upper and lower mould;
Step 6: cut rising head: utilize toothless saw to cut redundance acquisition strands (Fig. 2) such as rising head;
Step 7: cleaning defective: cleaning finishing strand rising head cutting part and casting billet surface defective;
Step 8: homogenizing annealing: constant temperature is heated in the strand shove charge: 530 ℃, insulation: 4 hours, insulation finished can carry out mold pressing production after the back strand is cooled to 470 ℃ with stove;
Step 9: forging mold preheating: with forging mold shove charge heating, constant temperature: 400 ℃, be incubated 4 hours;
Step 10: mold pressing: utilize 5000 tons of hydraulic presses and forging die (Fig. 6) to carry out mold pressing, mold pressing front mold die cavity and forging surface spray oil foundation stone China ink lubricant, lubricated promptly need the spraying evenly obtains the forging of band burr after the mold pressing;
Step 11: cut edge: after treating that forging with burr at room temperature cools off, utilize 800 tons of punch presses and edger (Fig. 5) to cut edge;
Step 12: erosion is washed: 1: ungrease treatment: with the forging stock stainless steel framework of packing into, immerse alkali groove (composition: NaOH concentration: 80-120g/L, Na 2CO 3Concentration: 25-30g/L), soak time 10-15 minute, tank liquor temperature: 50-60 ℃; 2: the warm water washing: the stainless steel framework that forging stock will be housed immerses warm water tank (composition: water for industrial use), soaked water temperature: 50-60 ℃ 1-4 minute; 3: cold water washing: the stainless steel framework that forging stock will be housed immerse cold rinse bank (composition: mobile water for industrial use), washing time 1-4 minute, water temperature: room temperature; 4: pickling: the stainless steel framework that forging stock will be housed immerses nitric acid groove (composition: HNO 3, concentration: 200-300g/L), soak time: 0.5-3min is till the light; 5: cold water washing: the stainless steel framework that forging stock will be housed immerse cold rinse bank (composition: mobile water for industrial use), washing time 1-4 minute, water temperature: room temperature; 6: oven dry naturally;
Step 13: cleaning defective: remaining burr and forging blemish when polishing finishing forging is cut edge;
Step 14: solution treatment: heating constant temperature: 530 ℃; Insulation: 1.5 hours; Entry immediately after forging is come out of the stove moves up and down in water and is no less than 6 times,, forging can not surface in the whipping process, and forging time of staying in water is not less than 15 minutes, is not more than 17 seconds transfer time; Water temperature: 30-50 ℃;
Step 15: proofread and correct: utilize 5000 tons of hydraulic presses and straightening die (Fig. 4) that forging is proofreaied and correct to eliminate part torsional deformation and buckling deformation;
Step 10 six: artificial aging: forging shove charge heating, constant temperature: 155 ℃; Insulation: 10 hours;
Step 10 seven: manual synchronizing: proofread and correct to eliminate the residual deformation after straightening die is proofreaied and correct to the different deformation extent of each forging, obtain the forging of The profile;
Step 10 eight: erosion is washed: forging is lost wash the acquisition clean surface, operate same step 12;
Step 10 nine: cleaning defective: forging is carried out monolithic finish eliminate the burr or the defective of colliding with, and polishing forging surface.

Claims (1)

1. wheelchair frame structural member casting and forging molding method, it is characterized in that: step is following:
Step 1: blanking: with material trademark is that 6061 cylindrical φ 200mm aluminium ingot casting sawing becomes the long blank of 800mm;
Step 2: melting: place crucible to heat blank, constant temperature is heated to fusing for 650 ℃;
Step 3: mould assembly: rising head and mold cavity surface at casting mould are smeared releasing agent, close tight casting mould, urgent geometrical clamp;
Step 4: cast: contain 4.5 kilograms of the liquid aluminium get after the blank fusing with crucible, be poured into die cavity to die cavity from the sprue gate and be full of fully;
Step 5: removing from mould: open geometrical clamp, molded blank is taken out in the casting mould die sinking;
Step 6: cut rising head: utilize toothless saw excision rising head, obtain strand;
Step 7: cleaning defective: cleaning finishing strand rising head position and blemish;
Step 8: homogenizing annealing: 530 ℃ of strand shove charge heating constant temperatures; Insulation: 4 hours, insulation finished can carry out mold pressing production after the back strand is cooled to 470 ℃ with stove;
Step 9: forging mold preheating: heating constant temperature: 400 ℃; Insulation: 4 hours;
Step 10: mold pressing: utilize 5000 tons of hydraulic presses and forging mold that the strand that step 8 obtains is forged and pressed, obtain forging after the forging and pressing;
Step 11: cut edge: utilize 800 tons of punch presses and edger that forging is carried out cold-trim(ming) after the forging cooling;
Step 12: erosion is washed: 1: ungrease treatment: with the forging stock stainless steel framework of packing into, immersed the alkali groove 10-15 minute, tank liquor temperature: 50-60 ℃; 2: the warm water washing: the stainless steel framework that forging stock will be housed immersed warm water tank 1-4 minute, water temperature: 50-60 ℃; 3: cold water washing: the stainless steel framework that forging stock will be housed immersed cold rinse bank 1-4 minute, water temperature: room temperature; 4: pickling: the stainless steel framework that forging stock will be housed immerses nitric acid groove 0.5-3min till the light; 5: cold water washing: the stainless steel framework that forging stock will be housed immerses cold rinse bank flushing 1-4 minute, water temperature: room temperature; 6: oven dry naturally;
Step 13: cleaning defective: cleaning polishing forging blemish;
Step 14: solution treatment: heating constant temperature: 530 ℃; Insulation: 1.5 hours; Entry immediately after forging is come out of the stove, forging time of staying in water is not less than 15 minutes, is not more than 17 seconds transfer time; Water temperature: 30-50 ℃;
Step 15: proofread and correct: the forging after utilizing 5000 tons of hydraulic presses and straightening die to solution treatment is proofreaied and correct;
Step 10 six: artificial aging: forging shove charge heating, constant temperature: 155 ℃; Insulation: 10 hours;
Step 10 seven: manual synchronizing: carry out manual synchronizing to the concrete deformation extent of forging;
Step 10 eight: erosion is washed: forging is lost wash the acquisition clean Surface, operate same step 12;
Step 10 nine: cleaning defective: forging is carried out monolithic finish eliminate the burr or the defective of colliding with.
CN 201110283392 2011-09-22 2011-09-22 Molding method for casting and forging structure piece of wheelchair frame Expired - Fee Related CN102363259B (en)

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Application Number Priority Date Filing Date Title
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CN102363259B CN102363259B (en) 2013-01-23

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699636A (en) * 2012-06-18 2012-10-03 西南大学 Liquid die-forging and rolling composite forming method for 6082 aluminum alloy special-section large ring piece
CN104694723A (en) * 2013-12-05 2015-06-10 北京航星机器制造有限公司 Rapid correction method for deformation due to heat treatment of exocentric casting aluminum alloy member
CN104741592A (en) * 2015-03-19 2015-07-01 新荣株式会社 Continuous casting-forging device for manufacturing aluminous automobile component and manufacturing method with use of continuous forging device
CN105234634A (en) * 2015-10-22 2016-01-13 苏州胜利精密制造科技股份有限公司 Machining method of liquid crystal television set support
CN105401018A (en) * 2015-11-14 2016-03-16 合肥标兵凯基新型材料有限公司 High-strength high-toughness ultra-fine grain wrought aluminum alloy and preparation method thereof
CN104694857B (en) * 2013-12-05 2016-08-24 北京航星机器制造有限公司 Thin-walled inlets structure Cast aluminium alloy gold cabin section method for controlling heat treatment deformation
CN107697855A (en) * 2017-08-30 2018-02-16 宁波韧霸货叉有限公司 A kind of high rigidity fork of forklift truck
CN108746469A (en) * 2018-05-17 2018-11-06 湖北三环锻造有限公司 The cold and hot joint trimming technology of aluminum alloy forge piece
CN115194083A (en) * 2022-06-29 2022-10-18 中国第一汽车股份有限公司 Production method of aluminum alloy rear steering knuckle of casting and forging combined passenger car

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CN1050512A (en) * 1989-09-29 1991-04-10 天津大学机电分校 Al-Zn-Mg is an alloy casting-die forging assembling process
JPH11286758A (en) * 1998-04-02 1999-10-19 Nippon Light Metal Co Ltd Production of forged product using aluminum casting material
JP2002361399A (en) * 2001-06-07 2002-12-17 Aisin Seiki Co Ltd Casting and forging method for aluminum alloy, and aluminum alloy for casting and forging
CN1861288A (en) * 2005-05-10 2006-11-15 徐名钧 Procedure for processing aluminium alloy products
CN101486087A (en) * 2009-02-11 2009-07-22 江苏大学 Casting and forging combined technique of aluminum alloy linkage rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1050512A (en) * 1989-09-29 1991-04-10 天津大学机电分校 Al-Zn-Mg is an alloy casting-die forging assembling process
JPH11286758A (en) * 1998-04-02 1999-10-19 Nippon Light Metal Co Ltd Production of forged product using aluminum casting material
JP2002361399A (en) * 2001-06-07 2002-12-17 Aisin Seiki Co Ltd Casting and forging method for aluminum alloy, and aluminum alloy for casting and forging
CN1861288A (en) * 2005-05-10 2006-11-15 徐名钧 Procedure for processing aluminium alloy products
CN101486087A (en) * 2009-02-11 2009-07-22 江苏大学 Casting and forging combined technique of aluminum alloy linkage rod

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102699636A (en) * 2012-06-18 2012-10-03 西南大学 Liquid die-forging and rolling composite forming method for 6082 aluminum alloy special-section large ring piece
CN102699636B (en) * 2012-06-18 2015-08-19 西南大学 The liquid forging Rolling compund manufacturing process of 6082 aluminium alloy different cross section large rings
CN104694723A (en) * 2013-12-05 2015-06-10 北京航星机器制造有限公司 Rapid correction method for deformation due to heat treatment of exocentric casting aluminum alloy member
CN104694857B (en) * 2013-12-05 2016-08-24 北京航星机器制造有限公司 Thin-walled inlets structure Cast aluminium alloy gold cabin section method for controlling heat treatment deformation
CN104741592A (en) * 2015-03-19 2015-07-01 新荣株式会社 Continuous casting-forging device for manufacturing aluminous automobile component and manufacturing method with use of continuous forging device
CN105234634A (en) * 2015-10-22 2016-01-13 苏州胜利精密制造科技股份有限公司 Machining method of liquid crystal television set support
CN105401018A (en) * 2015-11-14 2016-03-16 合肥标兵凯基新型材料有限公司 High-strength high-toughness ultra-fine grain wrought aluminum alloy and preparation method thereof
CN105401018B (en) * 2015-11-14 2018-05-15 合肥市易远新材料有限公司 A kind of high-strength tenacity ultrafine crystal deformed aluminium alloy and preparation method thereof
CN107697855A (en) * 2017-08-30 2018-02-16 宁波韧霸货叉有限公司 A kind of high rigidity fork of forklift truck
CN108746469A (en) * 2018-05-17 2018-11-06 湖北三环锻造有限公司 The cold and hot joint trimming technology of aluminum alloy forge piece
CN115194083A (en) * 2022-06-29 2022-10-18 中国第一汽车股份有限公司 Production method of aluminum alloy rear steering knuckle of casting and forging combined passenger car

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