CN104493139B - A kind of method of compound two Albatra metals on plunger pump cylinder body blank - Google Patents
A kind of method of compound two Albatra metals on plunger pump cylinder body blank Download PDFInfo
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- CN104493139B CN104493139B CN201510001326.0A CN201510001326A CN104493139B CN 104493139 B CN104493139 B CN 104493139B CN 201510001326 A CN201510001326 A CN 201510001326A CN 104493139 B CN104493139 B CN 104493139B
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- copper alloy
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- plunger pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
Abstract
The invention discloses a kind of method of compound two Albatra metals on plunger pump cylinder body blank, comprise the following steps: one, cleaning needs founding surface and activates, in blank (1) bottom, guiding gutter (4) is installed；Two, preheating；Three, melt the first copper alloy, the first copper alloy is filled in the cylinder bore (2) of blank (1)；Four, insulation stands, put into dividing plate (6), adjust temperature regulating device, the lower temperature making blank (1) in stove is lower 5 15 DEG C than upper end temperature, five, the second copper alloy is placed in the spherical concave surface (3) of blank (1), heat up fusing the second copper alloy, and after the second copper alloy is completely melt, insulation stands；Six, cooling is come out of the stove.The present invention can be implemented in compound different Cu alloy on two different operating faces of plunger pump cylinder body, improves the performance and used life of plunger displacement pump.
Description
Technical field
The processing method that the present invention relates to a kind of plunger pump cylinder body, particularly relates to a kind of complex copper in plunger pump cylinder body
The method of alloy.
Background technology
In the hydraulic components of existing engineering machinery, many high-end products are had to relate to copper alloy and ferrous materials
Complex technique, this being combined is not simple machinery laminating, but the metallurgical binding between both materials, i.e. at bi-material
There is interpenetrating and metallurgical reaction between atom on interface, thus combination process is had the highest technology requirement.As common
Hydraulic plunger pump cylinder body, in order to solve the Friction pairs matching problem of cylinder body and the part such as plunger, oil distribution casing during using, its
Cylinder body is exactly by the composite component of steel matrix Yu copper alloy, and its composite surface includes plane, curved surface, the face of cylinder and hole.
Existing domestic steel matrix (with blank before the founding of steel machine-shaping) is combined with the founding of copper alloy, on the face of cylinder and
The compound aspect in hole, does not also have the manufacturing experience of like, at present, domestic solution hydraulic plunger pump cylinder body plunger hole (cylinder
Hole) Complex Problem, generally use cast or inlay the way of copper sheathing, casting be copper is melted after use manually copper liquid
The mode being poured in steel matrix, it exists, and labor intensity is big, production efficiency is low, potential safety hazard is big, low (the especially chi of qualification rate
Very little bigger product) etc. shortcoming, the cast on the face of cylinder and hole is combined aspect, there is suitable in hole of congenital not enough copper
Sequence freezing problem never has suitable solution.The way inlaying copper sheathing is to use mechanical force to make copper sheathing be interference fitted in steel
In the hole of matrix, being simple machinery laminating, this processing method in use copper sheathing is easily extracted, and there is the biggest making
By potential safety hazard, especially in terms of mesohigh, high-pressure and hydraulic plunger displacement pump, potential safety hazard is bigger.
Chinese patent CN 102513521 B discloses steel matrix and the copper alloy face of cylinder of a kind of hydraulic plunger pump cylinder body
And the casting method in hole, step is as follows: cleaning steel matrix needs founding surface, and activates surface；Copper alloy is positioned over
In steel matrix, preheat；Melting copper alloy enables its flow into steel matrix and needs recombination region；30-60min is placed in insulation；Two sections
Cooling.The problem efficiently solving steel matrix and two kinds of metal material metallurgical binding of copper alloy after using this technology, and make it
The bond strength at interface has reached the reprocessing of product and practical working condition requirement, and (hydraulic planger pump steel matrix is whole to make this series products
Body founding cylinder blank) qualification rate up to more than 95%, production efficiency is at least enhanced about more than once, bond strength improve 20%
Left and right, the most domestic with interior product cost decline about 15%.
But in real work, the work surface operating mode of plunger displacement pump different parts is different, to improve workability further
Can, need compound different copper alloy on different work surfaces, and said method can only on cylinder body founding one Albatra metal,
The development of plunger pump technique can not be met.
Summary of the invention
The technical problem to be solved in the present invention is: can only be combined for current hydraulic plunger pump cylinder body complex copper alloy technology
The problem of one Albatra metal, it is provided that a kind of side that can be combined different Cu alloy on the different operating face of plunger pump cylinder body
Method.
The technical scheme is that
A kind of method of compound two Albatra metals on plunger pump cylinder body blank, the center of top of blank has spherical concave surface,
It is provided with the cylinder bore of a loop pillar shape inside blank, between cylinder bore and spherical concave surface, has interface channel, be combined and comprise the following steps:
One, cleaning blank needs founding surface, the founding surface then metal activation agent being smeared or being placed on steel matrix to enter
Row activation, installs guiding gutter bottom blank；
Two, preheating blank and copper alloy；
Three, melt the first copper alloy, the first copper alloy is filled in the cylinder bore of blank, make copper alloy fill out completely
It is full of cylinder bore；
Four, insulation stands, and puts into dividing plate in the blank cylinder bore interface channel with spherical concave surface, adjusts temperature regulating device,
The lower temperature making blank in stove is lower than upper end temperature 5-15 DEG C；
Five, being placed in the spherical concave surface of blank by the second copper alloy, heat up fusing the second copper alloy, treats the second
After copper alloy is completely melt, insulation stands；
Six, cooling is come out of the stove.
In step one, guiding gutter being provided with plug, plug upper end is inserted in the cylinder bore of blank.
In step 2, fill purity during preheating and make protection gas not less than 99.99% nitrogen；Preheating temperature is 800-860 DEG C, time
Between 30-60min.
In step 3, during fusing with purity not less than 99.99% nitrogen make protection gas, fusion temperature be 1080 DEG C to 1150
℃。
In step 4, holding temperature at 1080-1100 DEG C, allow blank and fusing after copper alloy insulation place 30-
60min。
In step 5, during fusing with purity not less than 99.99% nitrogen make protection gas, fusion temperature be 1080 DEG C to 1150
℃；Insulation stand time temperature at 1080-1100 DEG C, allow blank and fusing after copper alloy insulation place 30-60min.
In step 6, cooling is divided into two stages, and the requirement of first stage is: make not less than 99.99% nitrogen by purity
Protection gas, is incubated 30-60min at 920-940 DEG C；The requirement of second stage is: protect not less than 99.9% nitrogen by purity
Gas, naturally cools to less than 200 DEG C in stove and comes out of the stove.
In blank, interface channel is the cylindrical structural of axis vertical, after completing to be combined, needs interface channel overall
It is processed into the hole of inclination.
Interface channel is a shoulder hole.
Beneficial effects of the present invention:
1. the present invention can be implemented in compound different Cu alloy on two different operating faces of plunger pump cylinder body, improves plunger
Pump performance and service life.
2. utilize guiding gutter each cylinder bore of plunger displacement pump blank to be connected, balance copper alloy liquid in each cylinder bore
Face, it is to avoid the maldistribution of copper alloy in different cylinder bore, and use this structure only can irrigate copper from a hole
Alloy, it is not necessary to irrigate respectively
3. utilize dividing plate to be separated in two founding regions of connection, reduce and make the temperature of inferior part of the cylinder block less than top temperature
Degree, prevents two Albatra metals to be mutually mixed.
4. the technical parameter such as preheating time, temperature retention time, solidification temperature, rate of cooling in fusion-casting process, can effectively drop
There is the probability of the defect such as pore, loose, slag inclusion in low founding face so that it is meet international standards.
5. plug is set in founding hole, the nucleation rate of cylinder can be increased and form certain degree of supercooling, moreover it is possible to save
The usage amount of copper alloy.
6. even with dividing plate by two founding regions separately, still suffer from the alloy middle phase at interface channel of fraction
Mutually mixing, is therefore pre-machined into interface channel straight hole, is processed into inclined hole after founding again, by internal dividing plate and
The alloy position being mutually mixed together is excavated.
7. interface channel is pre-machined into shoulder hole, it is simple to installs dividing plate, and improves the partition effect of dividing plate.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of blank to be composite in the present invention；
Detailed description of the invention:
Such as figure, the center of top of hydraulic plunger pump cylinder body blank 1 has spherical concave surface 3, and blank 1 is internal is provided with a loop pillar shape
Cylinder bore 2, totally 7, having interface channel, interface channel between cylinder bore 2 and spherical concave surface 3 is a vertical shoulder hole, if
In respect of a dividing plate 6, may be mounted in shoulder hole.
Before compound, first installing guiding gutter 4 bottom blank 1, the bottom of 7 cylinder bore 2 can be connected into by guiding gutter 4
One cavity, guiding gutter 4 is provided with 7 plugs 5, and plug 5 upper end is inserted in cylinder bore 2.
Composite steps is as follows:
One, need founding surface, then metal activation agent to be smeared or placed as cleaning agent cleaning blank 1 with dehydrated alcohol
Activating on the founding surface of steel matrix, described metal activation agent is uniformly mixed structure by two parts of Boraxs and a flux
Becoming, flux used is the solder flux that Castolin company produces, and the trade mark is 1802；
Two, preheating blank 1, dividing plate 6 and copper alloy, fills purity and makees protection gas not less than 99.99% nitrogen during preheating；Preheating
Temperature is 800-860 DEG C, time 30-60min；
Three, melt the first copper alloy, the first copper alloy is filled in the cylinder bore 2 of blank 1, make copper alloy complete
Filling full cylinder bore 2, make protection gas by purity not less than 99.99% nitrogen during fusing, fusion temperature is 1080 DEG C to 1150 DEG C；
Four, insulation stands, and holding temperature, at 1080-1100 DEG C, allows the copper alloy insulation after blank 1 and fusing place 30-
60min, then puts into dividing plate 6 in the interface channel of blank 1 cylinder bore 2 and spherical concave surface 3, adjusts temperature regulating device, in making stove
The lower temperature of blank 1 lower than upper end temperature 5-15 DEG C；
Five, being placed in the spherical concave surface 3 of blank 1 by the second copper alloy, heat up fusing the second copper alloy, treats second
After Albatra metal is completely melt, insulation stands, and makees protection gas by purity not less than 99.99% nitrogen during fusing, and fusion temperature is
1080 DEG C to 1150 DEG C；When insulation stands, temperature is at 1080-1100 DEG C, allows the copper alloy insulation after blank 1 and fusing place 30-
60min；Six, cooling is come out of the stove, and cooling is divided into two stages, and the requirement of first stage is: make not less than 99.99% nitrogen by purity
Protection gas, is incubated 30-60min at 920-940 DEG C；The requirement of second stage is: protect not less than 99.9% nitrogen by purity
Gas, naturally cools to less than 200 DEG C in stove and comes out of the stove.
Claims (9)
1. the method for compound two Albatra metals on plunger pump cylinder body blank, it is characterised in that: the center of top of blank (1)
There is spherical concave surface (3), the internal cylinder bore (2) being provided with a loop pillar shape of blank (1), have between cylinder bore (2) and spherical concave surface (3)
Interface channel, is combined and comprises the following steps:
One, cleaning blank (1) needs founding surface, the founding surface then metal activation agent being smeared or being placed on steel matrix to carry out
Activation, installs guiding gutter (4) in blank (1) bottom；
Two, preheating blank (1) and copper alloy；
Three, melt the first copper alloy, the first copper alloy is filled in the cylinder bore (2) of blank (1), makes copper alloy complete
Fill full cylinder bore (2)；
Four, insulation stands, and puts into dividing plate (6) in blank (1) cylinder bore (2) interface channel with spherical concave surface (3), adjusts control
Temperature device, the lower temperature making blank (1) in stove is lower than upper end temperature 5-15 DEG C；
Five, being placed on by the second copper alloy in the spherical concave surface (3) of blank (1), heat up fusing the second copper alloy, treats second
After Albatra metal is completely melt, insulation stands；
Six, cooling is come out of the stove.
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 1, it is characterised in that: in step
In rapid one, guiding gutter (4) being provided with plug (5), plug (5) upper end is inserted in the cylinder bore (2) of blank (1).
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 1, it is characterised in that: in step
In rapid two, fill purity during preheating and make protection gas not less than 99.99% nitrogen；Preheating temperature is 800-860 DEG C, time 30-
60min。
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 3, it is characterised in that: step
In three, making protection gas by purity not less than 99.99% nitrogen during fusing, fusion temperature is 1080 DEG C to 1150 DEG C.
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 4, it is characterised in that: in step
In rapid four, holding temperature at 1080-1100 DEG C, allow blank (1) and fusing after copper alloy insulation stand 30-60min.
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 5, it is characterised in that: step
In five, making protection gas by purity not less than 99.99% nitrogen during fusing, fusion temperature is 1080 DEG C to 1150 DEG C, and insulation stands
Shi Wendu at 1080-1100 DEG C, allow blank (1) and fusing after copper alloy insulation stand 30-60min.
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 6, it is characterised in that: step
In six, cooling is divided into two stages, and the requirement of first stage is: make protection gas by purity not less than 99.99% nitrogen, at 920-
940 DEG C of insulation 30-60min；The requirement of second stage is: make protection gas by purity not less than 99.9% nitrogen, natural in stove
It is cooled to less than 200 DEG C come out of the stove.
8., according to the arbitrary described method of compound two Albatra metals on plunger pump cylinder body blank of claim 1-7, its feature exists
In: in blank (1), interface channel is the cylindrical structural of axis vertical, after completing to be combined, needs to add interface channel entirety
Work becomes the hole of inclination.
The method of compound two Albatra metals on plunger pump cylinder body blank the most according to claim 8, it is characterised in that: connect
Passage is a shoulder hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510001326.0A CN104493139B (en) | 2015-01-05 | 2015-01-05 | A kind of method of compound two Albatra metals on plunger pump cylinder body blank |
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| CN201510001326.0A CN104493139B (en) | 2015-01-05 | 2015-01-05 | A kind of method of compound two Albatra metals on plunger pump cylinder body blank |
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| CN104493139B true CN104493139B (en) | 2016-09-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570689A (en) * | 2020-11-18 | 2021-03-30 | 贵州鼎成熔鑫科技有限公司 | Copper reduction method for plunger hole of bimetallic cylinder body of hydraulic plunger pump and motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106001443B (en) * | 2016-06-30 | 2018-03-13 | 中北大学 | A kind of bimetallic plunger pump rotor moulding process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1214977A (en) * | 1997-10-20 | 1999-04-28 | 屠秋华 | Method for casting bimetal pluger type hydraulic pump or motor cylinder |
| JP3151556B2 (en) * | 1998-05-29 | 2001-04-03 | 株式会社栗本鐵工所 | Composite casting method |
| US6705384B2 (en) * | 2001-10-23 | 2004-03-16 | Alcoa Inc. | Simultaneous multi-alloy casting |
| CN101722344A (en) * | 2009-12-01 | 2010-06-09 | 安徽博一流体传动股份有限公司 | Method for brazing nodular cast iron and copper alloy of hydraulic axial plunger pump cylinder body |
| CN102953968A (en) * | 2011-08-31 | 2013-03-06 | 天津市泽华源泵业科技发展有限公司 | Disc flow distribution variable displacement radial piston pump bimetal composite rotor |
| 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112570689A (en) * | 2020-11-18 | 2021-03-30 | 贵州鼎成熔鑫科技有限公司 | Copper reduction method for plunger hole of bimetallic cylinder body of hydraulic plunger pump and motor |
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