CN108118259A - A kind of Wear-resisting plunger and preparation method thereof - Google Patents
A kind of Wear-resisting plunger and preparation method thereof Download PDFInfo
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- CN108118259A CN108118259A CN201711044233.1A CN201711044233A CN108118259A CN 108118259 A CN108118259 A CN 108118259A CN 201711044233 A CN201711044233 A CN 201711044233A CN 108118259 A CN108118259 A CN 108118259A
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- plunger
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- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention belongs to high pressure compressor parts technical fields, and in particular to Wear-resisting plunger and preparation method thereof.The plunger includes following weight percent composition：Cu：1 5%, Cr：0.5 1%, Mo：0.2 0.5%, P：1.2 3.5%, Si：0.8 2%, B：0.5 1.2%, Mn：10 15%, Fe：76 90%.The preparation method of the plunger comprises the following steps：By load weighted component heating and melting, then strand of casting to obtain is heat-treated, obtains plunger.The plunger of the present invention has excellent hardness and toughness and wear-resisting and heat-resisting property etc., excellent combination property.
Description
Technical field
The invention belongs to high pressure compressor parts technical fields, and in particular to Wear-resisting plunger and preparation method thereof.
Background technology
High pressure compressor is the basic product of mechanical industry, is widely used in every profession and trade.Air compressor is will to drive
The rotating mechanical energy of machine (motor or diesel engine) output is converted to the pressure energy of gas, is pneumatic system (or strength purging point)
The core equipment of power is provided.
The characteristics of plunger is one of high pressure compressor core component, it is using its wear resistant corrosion resistant coordinates high pressure sealing
Circle in reciprocating motion, makes water or liquid phase working media form high-pressure fluid.Plunger general shape is by draw ratio 10~20
Solid core or hollow rod-like structure composition, since operating pressure is high, back and forth rubs under high pressure with sealing material and impact push away for a long time
It draws, so not only requirement forms the material hardness height of plunger, good toughness, and requires high appearance and size and surface smoothness.
Plunger material is usually made of antifriction metal (AFM), but in oil, chemical industry, pharmacy, food and high pressure jer cutting, cleaning industry
In, liquid phase working media is often made of pure water or seawater, and not only working medium pressure is high, poor lubricity, and the grain of solid phase containing hard
Son easily causes the corrosion and abrasion of metal plunger in the application, and high pressure compressor continuous work short life or operation is caused to lose
Effect.
The content of the invention
The object of the present invention is to provide a kind of Wear-resisting plungers and preparation method thereof, cause by adjusting the chemical composition of plunger
Plunger has good hardness and toughness, improves the wear-resisting and heat-resisting property of plunger, extends plunger service life.
In order to reach one object of the present invention, the present invention uses following technical scheme：A kind of Wear-resisting plunger, feature exist
In the plunger includes following weight percent composition：
Cu：1-5%, Cr：0.5-1%, Mo：0.2-0.5%, P：1.2-3.5%, Si：0.8-2%, B：0.5-1.2%,
Mn：10-15%, Fe：76-90%.
P generally is regarded as harmful nonmetallic inclusion, and the segregation tendency in alloy graining process is very big, and promotes other
The segregation of element and harmful phase are precipitated, and drop low-alloyed setting rate and final set temperature, so as to finally influence the comprehensive of alloy
Can, therefore the content control by P in the alloy is≤0.02% in the prior art.But in the present invention, by improving Mn
Constituent content, while P content is increased to 1.2-3.5% (content≤0.02% controlled far above prior art needs), lead to
The interaction between each element is crossed, obtains unexpected technique effect unexpectedly：Because between the Mn and component of high-content
Other elements it is reasonably combined, easy segregation phenomenas of the P in alloy graining disappears, and promotes alloy grain refinement degree and hard instead
The generation of phase.
Preferably, plunger component further includes the micro alloying elements such as Ti, V and Nb, can be come with crystal grain thinning, precipitation strength
Improve the intensity of steel, additive amount ＜ 5.0%.
Preferably, the plunger includes following weight percent composition：
Cu：2-4%, Cr：0.8-1%, Mo：0.3-0.5%, P：2.0-3.0%, Si：1.0-1.8%, B：0.6-
1.0%, Mn：12-14%, Fe：78-86%.
Preferably, the plunger weight percentages of components meets 4.5≤Mn/P≤6.
In order to reach another object of the present invention, the present invention uses following technical scheme：A kind of preparation of Wear-resisting plunger
Method, the preparation method comprise the following steps：Raw material is weighed by plunger component formula, raw material heating and melting will have been weighed, poured
Strand is cast to obtain, is then heat-treated, obtains plunger.
Preferably, add in the refining agent for accounting for melt total amount 0.5-1.5% in heating and melting processing.
Preferably, the refining agent for 25-45wt% sodium carbonate, 20-30wt% boraxs, 20-40wt% ice crystals with
And 5-15% micas.Sodium carbonate and ice crystal are that alloy refining purifies common refining agent, but the mixture of the two is as essence
Refining agent still has many deficiencies, such as limited to impurity absorption solvability, it is impossible to chemical action effectively occur with metal bath
Deng.Borax is the structure of bulk multi-hole, more, thinner pore space structure is obtained under the high temperature foaming of sodium carbonate, in lamella
Under the assistance of shape mica, the oxidizing slag effectively in absorption and dissolving alloy reaches refining catharsis.
Preferably, the heat treatment is to 800-900 DEG C by heating strand, 10-15h is handled, after being quickly cooled down, then is added
Heat to 200-300 DEG C tempering 2-6h.After solution treatment is quickly cooled down, using temper, alloy structure is changed into Ovshinsky
Body, the granular boride being precipitated in this course gradually spread, dissolve into austenite and disappear, and are derived from very thin
Small crystal grain greatlys improve the tensile strength and impact flexibility of material.But it the solid solution temperature that uses of the present invention and returns
Fiery temperature will be less than the prior art, because there are the P of the high-content and Mn of high-content in plunger component of the present invention, if
Temperature is excessively high, and the P of high-content can influence the diffusion of other elements, can promote segregation, so as to influence plunger quality, by prolonging
The long solution treatment time so that solid solution is fully dissolved.In subsequent lonneal, P and Mn interactions effectively carry
The intensity and toughness of high material.
Preferably, the strand after heating obtains plunger after rough turn, half smart car, corase grinding, fine grinding, grinding.
The P and Mn of the chemical composition of Wear-resisting plunger of the present invention, especially high-content so that plunger have excellent hardness and
Toughness is effectively improved wear-resisting and heat-resisting property of plunger etc., excellent combination property.
The preparation method of the present invention and the chemical composition of the present invention are used cooperatively, and can play the optimality of chemical composition
Can, simple for process, convenient operation and control, stable quality, production efficiency is high, can large-scale industrial production.
Specific embodiment
Explanation is further described to technical scheme below by specific embodiment.If without specified otherwise,
Raw material employed in the embodiment of the present invention is raw material commonly used in the art, and the method employed in embodiment is this
The conventional method in field.
Embodiment 1
The plunger component of the present embodiment is：Cu：1.3%, Cr：0.6%, Mo：0.2%, P：1.8%, Si：0.8%, B：
0.5%, Mn：11%, Fe：83.8%.Load weighted component in the form of in-between alloy is added according to above-mentioned percentage and is melted
Change in stove, be heated to 720 DEG C under an inert gas and melted, cast after being then down to 600 DEG C, obtain strand, then
It is heat-treated, by heating strand to 850 DEG C, handles 10h, after being quickly cooled down, be again heated to 220 DEG C of tempering 5h, obtain plunger.
Embodiment 2
The plunger component of the present embodiment is：Cu：1.3%, Cr：0.6%, Mo：0.2%, P：2%, Si：0.8%, B：
0.5%, Mn：10.8%, Fe：83.8%.Load weighted component is added in the form of in-between alloy according to above-mentioned percentage
In melting furnace, 720 DEG C are heated under an inert gas and is melted, is cast after being then down to 600 DEG C, obtain strand, with
After be heat-treated, by heating strand to 850 DEG C, handle 10h, after being quickly cooled down, be again heated to 220 DEG C tempering 5h, obtain column
Plug.
Embodiment 3
The plunger component of the present embodiment is：Cu：2%, Cr：1%, Mo：0.4%, P：2.8%, Si：1.1%, B：0.7%,
Mn：13%, Fe：79%.Load weighted component is added in the form of in-between alloy in melting furnace according to above-mentioned percentage,
750 DEG C are heated under inert gas to be melted, is cast after being then down to 620 DEG C, are obtained strand, are then carried out hot place
Reason by heating strand to 800 DEG C, handles 12h, after being quickly cooled down, is again heated to 280 DEG C of tempering 4.5h, obtains plunger.
Embodiment 4
The plunger component of the present embodiment is：Cu：2%, Cr：1%, Mo：0.4%, P：2.8%, Si：1.1%, B：0.7%,
Mn：13%, Fe：79%.Load weighted component is added in the form of in-between alloy in melting furnace according to above-mentioned percentage,
750 DEG C are heated under inert gas to be melted, and are added in 0.6% refining agent of melt total amount and are carried out refining treatment 5min, it is described
Refining agent is 50wt% sodium carbonate and 50wt% ice crystals, is cast after being then down to 620 DEG C, obtains strand, then carries out
Heat treatment by heating strand to 800 DEG C, handles 12h, after being quickly cooled down, is again heated to 280 DEG C of tempering 4.5h, and process is rough turn, half
Plunger is obtained after smart car, corase grinding, fine grinding, grinding.
Embodiment 5
The plunger component of the present embodiment is：Cu：2%, Cr：1%, Mo：0.4%, P：2.8%, Si：1.1%, B：0.7%,
Mn：13%, Fe：79%.Load weighted component is added in the form of in-between alloy in melting furnace according to above-mentioned percentage,
750 DEG C are heated under inert gas to be melted, and are added in 0.6% refining agent of melt total amount and are carried out refining treatment 5min, wherein
Refining agent is 5wt% sodium carbonate, 25wt% boraxs and 30wt% ice crystals, casts, is cast after being then down to 620 DEG C
Base is then heat-treated, and by heating strand to 800 DEG C, handles 12h, after being quickly cooled down, is again heated to 280 DEG C of tempering 4.5h,
Plunger is obtained after rough turn, half smart car, corase grinding, fine grinding, grinding.
Embodiment 6
The plunger component of the present embodiment is：Cu：2%, Cr：1%, Mo：0.4%, P：2.8%, Si：1.1%, B：0.7%,
Mn：13%, Fe：79%.Load weighted component is added in the form of in-between alloy in melting furnace according to above-mentioned percentage,
750 DEG C are heated under inert gas to be melted, and are added in 0.6% refining agent of melt total amount and are carried out refining treatment 5min, wherein
Refining agent be 38wt% sodium carbonate, 25wt% boraxs and 30wt% ice crystals and 7% mica, be then down to 620 DEG C it is laggard
Row casting, obtains strand, is then heat-treated, and by heating strand to 800 DEG C, handles 12h, after being quickly cooled down, is again heated to
280 DEG C of tempering 4.5h, plunger is obtained after rough turn, half smart car, corase grinding, fine grinding, grinding.
Embodiment 7
The plunger component of the present embodiment is：Cu：2%, Cr：1%, Mo：0.4%, P：2.8%, Si：1.1%, B：0.7%,
Mn：13%, Ni:0.8%, Nb：1.0%, Fe：77.2%.According to above-mentioned percentage by load weighted component with in-between alloy
Form add in melting furnace, be heated to 750 DEG C under an inert gas and melted, add in 0.6% refining agent of melt total amount
Refining treatment 5min is carried out, wherein refining agent is 30wt% sodium carbonate, 22wt% boraxs and 33wt% ice crystals and 15%
Biotite is cast after being then down to 620 DEG C, is obtained strand, is then heat-treated, by heating strand to 880 DEG C, processing
14h after being quickly cooled down, is again heated to 300 DEG C of tempering 3h, plunger is obtained after rough turn, half smart car, corase grinding, fine grinding, grinding.
Comparative example 1
Difference lies in the component of 1 plunger of comparative example is comparative example 1 with embodiment 6：Cu：1.3%, Cr：0.6%, Mo：
0.2%, P：0.02%, Si：0.8%, B：0.5%, Mn：10.8%, Fe：85.78%.Remaining is similar to Example 6, not herein
It repeats.
Comparative example 2
Difference lies in the component of 2 plunger of comparative example is comparative example 2 with embodiment 6：Cu：1.3%, Cr：0.6%, Mo：
0.2%, P：0.4%, Si：0.8%, B：0.5%, Mn：10.8%, Fe：85.4%.Remaining is similar to Example 6, does not go to live in the household of one's in-laws on getting married herein
It states.
Comparative example 3
Difference lies in the component of 3 plunger of comparative example is comparative example 3 with embodiment 6：Cu：1.3%, Cr：0.6%, Mo：
0.2%, P：4%, Si：0.8%, B：0.5%, Mn：10.8%, Fe：81.8%.Remaining is similar to Example 6, does not go to live in the household of one's in-laws on getting married herein
It states.
Comparative example 4
Difference lies in the component of 4 plunger of comparative example is comparative example 4 with embodiment 6：Cu：1.3%, Cr：0.6%, Mo：
0.2%, P：2%, Si：0.8%, B：0.5%, Mn：9%, Fe：85.6%.Remaining is similar to Example 6, does not repeat herein.
Comparative example 5
Difference lies in the component of 5 plunger of comparative example is comparative example 5 with embodiment 6：Cu：1.3%, Cr：0.6%, Mo：
0.2%, P：2%, Si：0.8%, B：0.5%, Mn：16%, Fe：78.6%.Remaining is similar to Example 6, does not repeat herein.
Comparative example 6
Difference lies in the component of 6 plunger of comparative example is comparative example 6 with embodiment 6：Cu：1.3%, Cr：0.6%, Mo：
0.2%, P：0.02%, Si：0.8%, B：0.5%, Mn：9%, Fe：87.58%.Remaining is similar to Example 6, does not go to live in the household of one's in-laws on getting married herein
It states.
Comparative example 7
Comparative example 7 and embodiment 6 difference lies in, not through Overheating Treatment in 7 plunger preparation method of comparative example, remaining with
Embodiment 6 is similar, does not repeat herein.
Comparative example 8
Difference lies in the heat treatment in 8 plunger preparation method of comparative example is in the prior art to comparative example 8 with embodiment 6
High temperature solid solution and high tempering：By heating strand to 1000 DEG C, 4h is handled, after being quickly cooled down, is again heated to 500 DEG C of tempering
5h, remaining is similar to Example 6, does not repeat herein.
Performance measurement is carried out to the plunger that embodiment 1-7 and comparative example 1-8 is obtained, performance parameter is as shown in table 1.
The performance parameter of 1 embodiment 1-7 of table and comparative example 1-8 plungers
As shown in Table 1, the performance that the plunger of embodiment 1-7 is presented：Hardness, wear-resisting, toughness etc. will be better than comparative example.
Phosphorus content is not in claims in comparative example 1-3 plunger components, and manganese content does not exist in comparative example 4-5 plunger components
In claims, heat treatment that the preparation methods of comparative example 7-8 plungers uses is not belonging to present claims will
In the range of asking protection, thus the performance that they are shown is substantially less than embodiment 6, illustrates to use technical scheme
It can cause plunger that there is good comprehensive performance.
It is in addition, right in place of the non-limit of claimed technical scope midrange and in embodiment technical solution
Single or multiple technical characteristics replace the new technical solution formed on an equal basis, equally all in claimed model
In enclosing；Simultaneously the present invention program it is all enumerate or unrequited embodiment in, parameters in the same embodiment are only
Represent an example (i.e. a kind of feasible scheme) for its technical solution.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or supplement to described specific embodiment or substitute in a similar way, but simultaneously
The spirit or beyond the scope of the appended claims of the present invention is not deviated by.
Claims (7)
1. a kind of Wear-resisting plunger, which is characterized in that the plunger includes following weight percent composition：
Cu：1-5%, Cr：0.5-1%, Mo：0.2-0.5%, P：1.2-3.5%, Si：0.8-2%, B：0.5-1.2%, Mn：
10-15%, Fe：76-90%.
2. a kind of Wear-resisting plunger according to claim 1, which is characterized in that the plunger includes following weight percent group
Point：
Cu：2-4%, Cr：0.8-1%, Mo：0.3-0.5%, P：2.0-3.0%, Si：1.0-1.8%, B：0.6-1.0%, Mn：
12-14%, Fe：78-86%.
3. a kind of Wear-resisting plunger according to claim 1 or 2, which is characterized in that the plunger weight percentages of components expires
Foot 4.5≤Mn/P≤6.
4. a kind of preparation method of Wear-resisting plunger as described in claim 1, which is characterized in that the preparation method includes following step
Suddenly：Raw material is weighed by plunger component formula, by load weighted raw material heating and melting, then strand of casting to obtain is heat-treated, obtained
Plunger.
5. the preparation method of a kind of Wear-resisting plunger according to claim 4, which is characterized in that added in heating and melting processing
Account for the refining agent of melt total amount 0.5-1.5%.
6. the preparation method of a kind of Wear-resisting plunger according to claim 5, which is characterized in that the refining agent is 25-
45wt% sodium carbonate, 20-30wt% boraxs, 20-40wt% ice crystals and 5-15% micas.
7. the preparation method of a kind of Wear-resisting plunger according to claim 4, which is characterized in that the heat treatment is by strand
800-900 DEG C is heated to, handles 10-15h, after being quickly cooled down, is again heated to 200-300 DEG C of tempering 2-6h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044233.1A CN108118259A (en) | 2017-10-31 | 2017-10-31 | A kind of Wear-resisting plunger and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044233.1A CN108118259A (en) | 2017-10-31 | 2017-10-31 | A kind of Wear-resisting plunger and preparation method thereof |
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Application publication date: 20180605 |