CN105463447A - Double-alloy integral sleeve and manufacturing method thereof - Google Patents
Double-alloy integral sleeve and manufacturing method thereof Download PDFInfo
- Publication number
- CN105463447A CN105463447A CN201510948226.9A CN201510948226A CN105463447A CN 105463447 A CN105463447 A CN 105463447A CN 201510948226 A CN201510948226 A CN 201510948226A CN 105463447 A CN105463447 A CN 105463447A
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- China
- Prior art keywords
- alloy
- matrix sleeve
- sleeve
- wearing layer
- pair
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Classifications
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
- C23C24/085—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/682—Barrels or cylinders for twin screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
Abstract
The invention relates to the field of parallel twin-screw extruders, and discloses a double-alloy integral sleeve and a manufacturing method thereof. The integral sleeve is used in a machine barrel of a parallel twin-screw extruder and comprises a matrix sleeve (1) and an abrasion-resistant layer (2). The abrasion-resistant layer (2) is attached to the inner side wall of the matrix sleeve (1). The manufacturing method comprises the following steps that 1, the matrix sleeve (1) is prepared; 2, an appropriate organic binding agent is added into a powder raw material for manufacturing the abrasion-resistant layer (2), and the powder raw material is modulated into a pasty raw material; 3, the inner side wall of the matrix sleeve (1) is uniformly coated with the pasty raw material; 4, normal-pressure heat treatment is conducted on the pasty raw material coating the inner side wall of the matrix sleeve (1); and 5, vacuum sintering is conducted on the pasty raw material after normal-pressure heat treatment is conducted, and the abrasion-resistant layer (2) is obtained. According to the double-alloy integral sleeve manufactured through the manufacturing method, the abrasion resistance and the corrosion resistance of the inner side wall of the matrix sleeve can be effectively improved.
Description
Technical field
The present invention relates to parallel double-screw extruder field, particularly a kind of for two alloy monolithic covers in parallel double-screw extruder machine barrel and preparation method thereof.
Background technology
In the machine barrel of parallel double-screw extruder, usually use at present the matrix sleeve be made up of die steel material prevent in process of production plastic pellet to the abrasion and corrosion of machine barrel, along with the development of plastics, the performance of plastics constantly improves, requirements at the higher level be it is also proposed to plastic pellet, thus at modified plastics particle producer in the face of the wear resistance of machine and erosion resistance propose requirements at the higher level, simple die steel matrix sleeve cannot meet the requirement of wear resistance and the erosion resistance day by day improved.
Summary of the invention
Goal of the invention: for problems of the prior art, the invention provides a kind of two alloy monolithic cover and preparation method thereof, the two alloy monolithic covers using this making method to make effectively can promote wear resistance and the erosion resistance of matrix sleeve inner side-wall.
Technical scheme: the invention provides a kind of two alloy monolithic cover, in parallel double-screw extruder machine barrel, comprise matrix sleeve and wearing layer, described wearing layer is attached to described matrix sleeve inner side-wall.
Preferably, described matrix sleeve is made up of No. 45 steel or die steel, and described wearing layer is strengthened nickel-bass alloy material by nickel-bass alloy material or tungsten carbide particle and made.
Preferably, the outline of described matrix sleeve is oval, and Internal periphery is the double C-type that opening end is oppositely arranged.
Present invention also offers the making method of a kind of pair of alloy monolithic cover, comprise following steps: S1: prepare described matrix sleeve; S2: add appropriate organic binder bond in the powder stock making described wearing layer, described powder stock is modulated into paste raw materials; S3: described paste raw materials is evenly coated on the inner side-wall of described matrix sleeve; S4: normal pressure thermal treatment is carried out to the paste raw materials be coated on described matrix sleeve inner side-wall; S5: vacuum sintering is carried out to the described paste raw materials after having carried out described normal pressure thermal treatment, obtains described wearing layer.
Preferably, in described S2, the quality of described organic binder bond accounts for 3% ~ 5% of described powder stock quality.
Preferably, in described S3, the coat-thickness of described paste raw materials on described matrix sleeve inner side-wall is 1mm ~ 5mm.Coat-thickness controls within the scope of 1mm ~ 5mm, be beneficial to that coating is shock-resistant, corrosion resistance, help avoid the generation of defect in coating simultaneously, in drying and sintering process, heat-up rate is slower, above-mentioned thickness effectively can prevent coating cracking, is conducive to the diffusion of element in coating and matrix sleeve simultaneously, the defect such as simultaneously prevent that coating from cracking.
Further, in described S4, described normal pressure thermal treatment comprises the following steps: S4-1: be warming up to 150 DEG C ~ 200 DEG C with the speed of 5 DEG C/min ~ 20 DEG C/min; S4-2: at 150 DEG C ~ 200 DEG C insulation 0.5h ~ 4h.
Further, in described S5, described vacuum sintering comprises the following steps: S5-1: be 10 at pressure
-4pa ~ 10
- 31020 DEG C ~ 1150 DEG C are warming up to the speed of 2 DEG C/min ~ 15 DEG C/min under the vacuum condition of Pa; S5-2: at 1020 DEG C ~ 1150 DEG C insulation 0.1h ~ 1h; S5-3: be cooled to room temperature obtain described wearing layer with the 0.5 DEG C/min ~ 10 DEG C/speed of min.Composition and the tissue on coated material surface can be changed through vacuum sintering, thus obtain densification by the method for surface metallurgic, be combined firmly, have the wearing layer of the property such as wear-resistant, corrosion-resistant and high temperature resistant with matrix sleeve.
Preferably, described powder stock is Co-based alloy powder or tungsten carbide particle strengthening Co-based alloy powder.
Preferably, in described tungsten carbide particle strengthening Co-based alloy powder, the mass percent of described tungsten carbide particle is 10% ~ 35%, and the mass percent of described nickel-base alloy is 65% ~ 90%.Co-based alloy powder preferably uses Ni60 powdered alloy, and Ni60 powdered alloy has good solidity to corrosion, wear resistance, if but use temperature is higher, hardness can be caused to decline, add hard phase ceramic particle WC, then can avoid above-mentioned shortcoming, thus significantly improve its hardness, wear resistance etc.Beneficial effect: owing to being coated with one deck wearing layer in this pair of alloy monolithic cover, through special complete processing, the wear resistance of this wearing layer and erosion resistance are had can be greatly improved, compared with the entirety cover not having wearing layer in prior art, wear resistance and erosion resistance improve nearly 3 times, in addition, due to the existence of this wearing layer, outside matrix sleeve can select the material of relative moderate to make, thus save the cost of manufacture of matrix sleeve, the material decreased on the matrix sleeve inner side-wall that causes due to abrasion and corrosion runs off, thus the unnecessary wasting of resources avoiding short period of time interior a large amount of replacing matrix sleeve to cause and financial loss, meet working condition requirement.Accompanying drawing explanation
Fig. 1 is the three-dimensional arrangement skeleton view of two alloy monolithic cover;
Fig. 2 is the cross sectional representation of two alloy monolithic cover;
Fig. 3 is the sectional view along A-A face in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1:
Present embodiments provide for a kind of two alloy monolithic cover, as shown in Fig. 1 ~ 3, this entirety is overlapped the wearing layer that the matrix sleeve be made up of No. 45 steel or die steel and nickel-bass alloy material make and is formed, wearing layer is attached on the inner side-wall of matrix sleeve by coating and sintered compact, in actual applications, wearing layer preferably uses Ni60, preferredly can also mix tungsten carbide wc particle in Ni60, makes this wearing layer while meeting erosion resistance, possess higher wear resistance.
The matrix sleeve can found out in present embodiment by Fig. 1 ~ 3 is exterior contour is ellipse, in-profile is the double C-type that opening end is oppositely arranged, each several part size can adjust arbitrarily according to customer demand, be applicable to the machine barrel of the parallel double-screw extruder of different model, cost performance is higher.
Embodiment 2:
Present embodiments provide for the making method of two alloy monolithic cover in a kind of embodiment 1:
First produce the matrix sleeve of No. 45 steel matter of conformance with standard size, processing method and the prior art of this making matrix sleeve are as good as, and do not repeat herein;
Secondly in the powder stock of making wearing layer, add the organic binder bond of 4.5%, in present embodiment, the mixed powder of preferred Ni60 powdered alloy and WC particle is as the powder stock of wearing layer, preferably polyethylene alcohol is organic binder bond, so that above-mentioned powder stock is modulated into paste, wherein, the mass percent of WC particle is the mass percent of 25%, Ni60 alloy is 75%;
Then paste raw materials be coated in equably on the inner side-wall of matrix sleeve, the gauge control of coating is at about 4mm;
Then the matrix sleeve being coated with paste raw materials is positioned in normal pressure heat treatment furnace to carry out normal pressure thermal treatment to the wearing layer of paste raw materials; In the heat treated process of normal pressure, be first warming up to 180 DEG C with the speed of 10 DEG C/min, and at 180 DEG C of insulation 2.5h;
Then the matrix sleeve after normal pressure thermal treatment is positioned in vacuum sintering furnace, to carry out vacuum heat treatment to wearing layer; In the process of vacuum sintering, be first 10 at pressure
-3be warming up to 1100 DEG C with the speed of 3 DEG C/min under the vacuum condition of Pa, and at 1100 DEG C of insulation 0.5h, be finally cooled to the speed of 2 DEG C/min the wearing layer that room temperature obtains required wear resistance and erosion resistance.
Embodiment 3:
Present embodiment is roughly the same with embodiment 2, and main difference is:
The material of matrix sleeve is die steel, and the mass percent of WC particle is the mass percent of 10%, Ni60 alloy is 90%; The quality of polyvinyl alcohol accounts for 5% of WC particle and Ni60 mixed powder for alloy quality; Coat-thickness is 1mm, in normal pressure heat treatment process, is warming up to 200 DEG C with the speed of 20 DEG C/min, and at 200 DEG C of insulation 4h; In vacuum sintering process, be first 10 at pressure
-3be warming up to 1150 DEG C with the speed of 2 DEG C/min under the vacuum condition of Pa, and at 1150 DEG C of insulation 1h, be finally cooled to the speed of 10 DEG C/min the wearing layer that room temperature obtains required wear resistance and erosion resistance.In addition, present embodiment is identical with embodiment 2, does not repeat herein.
Embodiment 4:
Present embodiment is roughly the same with embodiment 2, and main difference is:
The material of matrix sleeve is die steel, and the mass percent of WC particle is the mass percent of 30%, Ni60 alloy is 65%; The quality of polyvinyl alcohol accounts for 3% of WC particle and Ni60 mixed powder for alloy quality; Coat-thickness is 5mm, in normal pressure heat treatment process, is warming up to 150 DEG C with the speed of 5 DEG C/min, and at 150 DEG C of insulation 0.5h; In vacuum sintering process, be first 10 at pressure
-4be warming up to 1020 DEG C with the speed of 2 DEG C/min under the vacuum condition of Pa, and at 1020 DEG C of insulation 0.1h, be finally cooled to the speed of 0.5 DEG C/min the wearing layer that room temperature obtains required wear resistance and erosion resistance.In addition, present embodiment is identical with embodiment 2, does not repeat herein.
The respective embodiments described above, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations of doing according to spirit of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a two alloy monolithic cover, in parallel double-screw extruder machine barrel, it is characterized in that, comprise matrix sleeve (1) and wearing layer (2), described wearing layer (2) is attached to described matrix sleeve (1) inner side-wall.
2. according to claim 1 pair of alloy monolithic cover, is characterized in that, described matrix sleeve (1) is made up of No. 45 steel or die steel, and described wearing layer (2) is strengthened nickel-bass alloy material by nickel-bass alloy material or tungsten carbide particle and made.
3. according to claim 1 and 2 pair of alloy monolithic cover, is characterized in that, the outline of described matrix sleeve (1) is oval, and Internal periphery is the double C-type that opening end is oppositely arranged.
4. a making method for two alloy monolithic cover as described in claim 1, is characterized in that, comprise following steps:
S1: prepare described matrix sleeve (1);
S2: add appropriate organic binder bond in the powder stock making described wearing layer (2), described powder stock is modulated into paste raw materials;
S3: described paste raw materials is evenly coated on the inner side-wall of described matrix sleeve (1);
S4: normal pressure thermal treatment is carried out to the paste raw materials be coated on described matrix sleeve (1) inner side-wall;
S5: vacuum sintering is carried out to the described paste raw materials after having carried out described normal pressure thermal treatment, obtains described wearing layer (2).
5. the making method of according to claim 4 pair of alloy monolithic cover, it is characterized in that, in described S2, the quality of described organic binder bond accounts for 3% ~ 5% of described powder stock quality.
6. the making method of according to claim 4 pair of alloy monolithic cover, it is characterized in that, in described S3, the coat-thickness of described paste raw materials on described matrix sleeve (1) inner side-wall is 1mm ~ 5mm.
7. the making method of according to claim 4 pair of alloy monolithic cover, it is characterized in that, in described S4, described normal pressure thermal treatment comprises the following steps:
S4-1: be warming up to 150 DEG C ~ 200 DEG C with the speed of 5 DEG C/min ~ 20 DEG C/min;
S4-2: at 150 DEG C ~ 200 DEG C insulation 0.5h ~ 4h.
8. the making method of according to claim 4 pair of alloy monolithic cover, it is characterized in that, in described S5, described vacuum sintering comprises the following steps:
S5-1: be 10 at pressure
-4pa ~ 10
-31020 DEG C ~ 1150 DEG C are warming up to the speed of 2 DEG C/min ~ 15 DEG C/min under the vacuum condition of Pa;
S5-2: at 1020 DEG C ~ 1150 DEG C insulation 0.1h ~ 1h;
S5-3: be cooled to room temperature obtain described wearing layer (2) with the 0.5 DEG C/min ~ 10 DEG C/speed of min.
9. the making method of the two alloy monolithic covers according to any one of claim 4 ~ 8, is characterized in that, described powder stock is Co-based alloy powder or tungsten carbide particle strengthening Co-based alloy powder.
10. the making method of according to claim 9 pair of alloy monolithic cover, it is characterized in that, in described tungsten carbide particle strengthening Co-based alloy powder, the mass percent of described tungsten carbide particle is 10% ~ 35%, and the mass percent of described nickel-base alloy is 65% ~ 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510948226.9A CN105463447A (en) | 2015-12-17 | 2015-12-17 | Double-alloy integral sleeve and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510948226.9A CN105463447A (en) | 2015-12-17 | 2015-12-17 | Double-alloy integral sleeve and manufacturing method thereof |
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| CN105463447A true CN105463447A (en) | 2016-04-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694889A (en) * | 2017-01-17 | 2017-05-24 | 苏州艾盾合金材料有限公司 | Inner liner with composite alloy layer and preparation method of inner liner |
| CN106735228A (en) * | 2017-01-06 | 2017-05-31 | 昆山中士设备工业有限公司 | A kind of manufacture method of plastic molding press machine barrel |
| CN111618306A (en) * | 2020-06-11 | 2020-09-04 | 太仓欧兹机械科技有限公司 | Preparation method of hole inner wall with composite metal layer |
| CN112643000A (en) * | 2020-11-27 | 2021-04-13 | 张正良 | Manufacturing method of double-screw barrel bushing |
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Application publication date: 20160406 |
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