CN101722344A - Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body - Google Patents
Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body Download PDFInfo
- Publication number
- CN101722344A CN101722344A CN200910252896A CN200910252896A CN101722344A CN 101722344 A CN101722344 A CN 101722344A CN 200910252896 A CN200910252896 A CN 200910252896A CN 200910252896 A CN200910252896 A CN 200910252896A CN 101722344 A CN101722344 A CN 101722344A
- Authority
- CN
- China
- Prior art keywords
- copper alloy
- iron
- spheroidal graphite
- graphite cast
- cast iron
- 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
Links
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to a complex method for large-area brazing of nodular cast iron and copper alloy of a hydraulic axial plunger pump cylinder body, which mainly comprises the following steps of: (1) degreasing the copper alloy, and degreasing and de-rusting the nodular cast iron; (2) assembling the copper alloy and the nodular cast iron, coating a brazing flux on the copper alloy and the nodular cast iron, and preparing a brazing filler metal; (3) putting the copper alloy and the nodular cast iron into a furnace and raising the temperature; (4) keeping the temperature; and (5) cooling the copper alloy and the nodular cast iron. The method effectively solves the problems of making two types of different metals achieve metallurgical bonding at a non-melting temperature, and makes the bonding strength of an interface meet the requirements on reprocessing and practical working condition of products; besides, the method overcomes the defects such as interface air holes, inclusions and the like of large curved surface brazing compounding, and solves the process problem in the brazing filler metal for the large curved surface brazing compounding of the nodular cast iron and the copper alloy, and the process problems in stripping and the like.
Description
Technical field
The present invention relates to a kind of soldering tech of metal material, the large-area brazing complex method of particularly a kind of spheroidal graphite cast-iron and copper alloy.
Technical background
It is compound that present domestic like product adopts the method for founding or sintering to carry out the large tracts of land of spheroidal graphite cast-iron and copper alloy mostly.Its shortcoming one is that the high meeting of heating-up temperature exert an adverse impact to the spheroidal graphite cast-iron material; The 2nd, combination interface exists than multiple hole, and fragility equates defective, also can have bigger residual stress, and it is unfavorable that this can cause the serviceability of follow-up Precision Machining and product.The application of present technique can be avoided above-mentioned defective, can reduce energy resource consumption simultaneously, enhances productivity.
Summary of the invention
The technical problem to be solved in the present invention is to improve the large-area brazing complex method of a kind of spheroidal graphite cast-iron and copper alloy.
The present invention solves the technical scheme that above technical problem adopts: the method for welding of a kind of spheroidal graphite cast-iron and copper alloy may further comprise the steps:
(1) degreasing of copper alloy and degreasing and eliminating rust of spheroidal graphite cast-iron;
(2) assembling of copper alloy and spheroidal graphite cast-iron be coated with brazing flux, preseting solder;
(3) going into stove heats up;
(4) insulation;
(5) cooling;
Copper alloy and spheroidal graphite cast-iron adopt alcohol or the dirt of acetone Solvent degreasing, and spheroidal graphite cast-iron adopts emery paper polishing or acid washing method rust cleaning.
Solder adopts Ag-Cu-Zn-Sn quaternary alloy solder, and its fusing point is between 620 ℃～650 ℃, and its ratio is:
Ag：39％-41％、Cu：20％-22％、Sn：28％-36％、Sn：33.4％-38.2％.
Described brazing flux has been selected KF-KBF for use
4-B
2O
3Its ratio difference of ternary chemical mixture:
KF:10%, KBF
4: B 60%,
2O
3: 30%, its active temperature is 600 ℃～850 ℃.
Described solder is shaped as thread or sheet, and its sectional dimension is respectively: thread Φ 1.6～Φ 2.0, sheet 50*0.2mm..
Describedly go into stove and heat up its heating-up temperature at 650 ℃～680 ℃.
Beneficial effect of the present invention is to have solved to make two kinds of different metals reach the problem of metallurgical binding under non-melting temperature, and the bond strength that makes its interface will reach the reprocessing and the practical working condition requirement of product, comprising having overcome the compound interface pore of large curved surface soldering and defect problem such as being mingled with; Spheroidal graphite cast-iron and the compound solder of copper alloy large curved surface soldering have been solved, striping and some other technological problemses.
Specific implementation method
Below in conjunction with the specific embodiment invention is described in further detail:
Embodiment one
The soldering of cast iron and copper alloy is compound, must clean workpiece before the weldering, and its step is as follows:
The first step is carried out careful cleaning to copper alloy and ductile iron workpiece, and the removing surface of copper alloy is fairly simple, only needs with the dirt of alcohol Solvent degreasing, and the surface of ductile iron workpiece need degrease with alcohol equally, thoroughly eliminates rust with emery paper simultaneously.
Second step will need the spheroidal graphite cast-iron of soldering and copper alloy to assemble, and the spheroidal graphite cast-iron of need soldering and the surface of copper alloy are coated KF-KBF
4-B
2O
3, ratio is respectively: KF10%, KBF
460%, B
2O
330% ternary compound brazing flux, and the ratio of putting into is the quaternary alloy solder of Ag39%～41%, Cu20%～22%, Su2.8%～3.6%, Zn33.4%～38.2%, thread sectional dimension is Φ 1.6～Φ 2.0.
The 3rd step put into air furnace and heats, and was rapidly heated, solder fusing when temperature reaches 650 ℃～680 ℃, and have good mobility, and can do long flowing after the fusing, be convenient to large-area joint filling, in the process of heating, need add solder simultaneously.
The 4th step stopped heating when the temperature of air furnace reaches between 650 ℃-680 ℃, needed to keep temperature to be controlled between 650 ℃-680 ℃ 20 minutes.
The 5th step, cooling, after the solder fusing, liquation is taken out air furnace and is slowly cooled off after the slit between spheroidal graphite cast-iron and the copper alloy is filled up fully, and cooling back embodiments of the present invention are just finished
Embodiment two
The first step is carried out careful cleaning to copper alloy and ductile iron workpiece, and the removing surface of copper alloy is fairly simple, degreases with acetone, and the surface of ductile iron workpiece can degrease with acetone equally, thoroughly eliminates rust with emery paper polishing or pickling simultaneously.
Second step will need the spheroidal graphite cast-iron of soldering and copper alloy to assemble, and the spheroidal graphite cast-iron of need soldering and the surface of copper alloy are coated KF-KBF
4-B
2O
3, ratio is respectively: KF10%, KBF
460%, B
2O
330% ternary compound brazing flux, and the ratio of putting into is the quaternary alloy solder of Ag39%～41%, Cu20%～22%, Su2.8%～3.6%, Zn33.4%～38.2%, its sheet sectional dimension is 50*0.2mm.
The 3rd step put into air furnace and heats, and was rapidly heated, solder fusing when temperature reaches 650 ℃～680 ℃, and have good mobility, and can do long flowing after the fusing, be convenient to large-area joint filling, in the process of heating, need add solder simultaneously.
The 4th step of the 4th step stops heating when the temperature of air furnace reaches between 650 ℃-680 ℃, needs to keep temperature to be controlled between 650 ℃-680 ℃ 20 minutes.
The 5th step, cooling, after the solder fusing, liquation is taken out air furnace and is slowly cooled off after the slit between spheroidal graphite cast-iron and the copper alloy is filled up fully, and cooling back embodiments of the present invention are just finished.
Claims (6)
1. the method for welding of hydraulic axial plunger pump cylinder body spheroidal graphite cast-iron and copper alloy is characterized in that may further comprise the steps:
(1) degreasing of copper alloy and degreasing and eliminating rust of spheroidal graphite cast-iron;
(2) assembling of copper alloy and spheroidal graphite cast-iron be coated with brazing flux, preseting solder;
(3) going into stove heats up;
(4) insulation;
(5) cooling;
2. the method for welding of spheroidal graphite cast-iron according to claim 1 and copper alloy is characterized in that: copper alloy and spheroidal graphite cast-iron adopt alcohol or acetone Solvent degreasing, and spheroidal graphite cast-iron adopts the emery paper rust cleaning.
3. the method for welding of spheroidal graphite cast-iron according to claim 1 and copper alloy is characterized in that: described solder adopts Ag-Cu-Zn-Sn quaternary alloy solder, and it is molten between 620-650 ℃, its ratio is: Ag:39%-41%, Cu:20%-22%, Sn:2.8%-3.6%, Zn:33.4%-38.2%
4. want the method for welding of 1 described spheroidal graphite cast-iron and copper alloy according to right, it is characterized in that: described brazing flux has been selected KF-KBF4-B2O3 ternary chemical mixture for use, its ratio is respectively: KF:10%, and KBF4:60%, its active temperature of B2O3:30% is 600-850 ℃.
5. according to the method for welding of claim 1 or 2 any described spheroidal graphite cast-iron and copper alloy, it is characterized in that: described solder is shaped as thread or its sectional dimension of sheet is respectively: thread Φ 1.6-Φ 2.0, sheet 50*0.2mm.
6. the method for welding of spheroidal graphite cast-iron according to claim 1 and copper alloy is characterized in that: describedly go into stove and heat up its heating-up temperature between 650 ℃-680 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910252896A CN101722344A (en) | 2009-12-01 | 2009-12-01 | Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910252896A CN101722344A (en) | 2009-12-01 | 2009-12-01 | Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101722344A true CN101722344A (en) | 2010-06-09 |
Family
ID=42444218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910252896A Pending CN101722344A (en) | 2009-12-01 | 2009-12-01 | Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101722344A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179520A (en) * | 2011-04-08 | 2011-09-14 | 无锡市汉力士液压泵制品有限公司 | Preparation method of nodular cast iron-bronze composite material for cylinder body of plunger pump |
| CN102390005A (en) * | 2011-11-14 | 2012-03-28 | 山东常林机械集团股份有限公司 | Bimetallic sintering process of spheroidal graphite cast iron and copper |
| CN102513521A (en) * | 2012-01-12 | 2012-06-27 | 贵州鼎成熔鑫科技有限公司 | Method for casting cylindrical surfaces and holes of steel matrix and copper alloy of hydraulic plunger pump cylinder body |
| CN102528000A (en) * | 2012-01-12 | 2012-07-04 | 贵州鼎成熔鑫科技有限公司 | Method for casting copper alloy and nodular cast iron matrix of cylinder of hydraulic plunger pump |
| CN104493139A (en) * | 2015-01-05 | 2015-04-08 | 贵州鼎成熔鑫科技有限公司 | Method for compounding two types of copper alloy on plunger pump cylinder blank |
-
2009
- 2009-12-01 CN CN200910252896A patent/CN101722344A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179520A (en) * | 2011-04-08 | 2011-09-14 | 无锡市汉力士液压泵制品有限公司 | Preparation method of nodular cast iron-bronze composite material for cylinder body of plunger pump |
| CN102390005A (en) * | 2011-11-14 | 2012-03-28 | 山东常林机械集团股份有限公司 | Bimetallic sintering process of spheroidal graphite cast iron and copper |
| CN102513521A (en) * | 2012-01-12 | 2012-06-27 | 贵州鼎成熔鑫科技有限公司 | Method for casting cylindrical surfaces and holes of steel matrix and copper alloy of hydraulic plunger pump cylinder body |
| CN102528000A (en) * | 2012-01-12 | 2012-07-04 | 贵州鼎成熔鑫科技有限公司 | Method for casting copper alloy and nodular cast iron matrix of cylinder of hydraulic plunger pump |
| CN102513521B (en) * | 2012-01-12 | 2013-05-15 | 贵州鼎成熔鑫科技有限公司 | Method for casting cylindrical surfaces and holes of steel matrix and copper alloy of hydraulic plunger pump cylinder body |
| CN104493139A (en) * | 2015-01-05 | 2015-04-08 | 贵州鼎成熔鑫科技有限公司 | Method for compounding two types of copper alloy on plunger pump cylinder blank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104907724A (en) | Reed-type environment-friendly coated silver brazing filler metal ring | |
| CN106475679B (en) | A kind of discontinuous pressure process diffusion connecting process of unrepeatered transmission of copper and aluminium alloy | |
| CN104907728A (en) | Environment-friendly coated copper brazing filler metal | |
| CN101543923B (en) | Method for welding target material and back board | |
| CN109732166B (en) | Diffusion brazing method for hard alloy and austenitic stainless steel | |
| US20070251410A1 (en) | Method For Reducing Metal Oxide Powder And Attaching It To A Heat Transfer Surface And The Heat Transfer Surface | |
| CN101722344A (en) | Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body | |
| CN102489813B (en) | Vacuum active brazing process of molybdenum-copper alloys and stainless steel | |
| CN102114561B (en) | Method of pre-copper-plated induction welding-brazing of aluminum-steel stud bolt | |
| CN101733494B (en) | Flame soldering method of high volume fraction SiC particle-reinforced Al matrix composite | |
| CN101648303A (en) | Welding method of target materials and back plates | |
| CN113210785A (en) | Brazing method of aluminum-scandium alloy target | |
| JP2009113114A (en) | Method of soldering magnesium alloy workpiece | |
| CN101722380A (en) | High volume fraction grain enhanced aluminum-base compound material brazing filler metal and preparation method thereof | |
| CN111203606A (en) | Metal target vacuum magnetron sputtering nickel plating and welding method | |
| CN111482731B (en) | Preparation method and application of metal welding material | |
| CN113732559A (en) | Composite brazing filler metal and preparation method thereof | |
| CN101992331B (en) | Vacuum brazing process for super-Ni laminated material and Cr18-Ni8 stainless steel | |
| CN113492296A (en) | Preparation method of aluminum bronze/titanium alloy bimetal | |
| CN102489809A (en) | Induction welding-brazing process for cladding copper onto aluminum-steel bolts | |
| CN104028982B (en) | The preparation method of a kind of meteor plektron CuW alloy and steel composites structure contact | |
| CN106756244A (en) | A kind of laser manufacture and the transition zone alloy material for remanufacturing copper plate of crystallizer | |
| CN106334883A (en) | High-strength corrosion-resistant high-temperature copper-based brazing material and manufacturing method thereof | |
| CN108145342B (en) | 45CrNiMoV and D6AC steel cladding welding protective agent | |
| CN106181113A (en) | A kind of soldering composite aluminium alloy solder silk and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |