CN1274866C - Rare earth nickel chromium alloy powdered material and its preparation method - Google Patents
Rare earth nickel chromium alloy powdered material and its preparation method Download PDFInfo
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- CN1274866C CN1274866C CNB031346030A CN03134603A CN1274866C CN 1274866 C CN1274866 C CN 1274866C CN B031346030 A CNB031346030 A CN B031346030A CN 03134603 A CN03134603 A CN 03134603A CN 1274866 C CN1274866 C CN 1274866C
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Abstract
The present invention relates to a rare earth nichrome powder material. The purpose of the present invention is to enhance the abrasion-resistant performance of workpieces, simplify production technology and reduce production cost. The material comprises the components by weight percentage: 0.5 to 3.5% of Re, 50 to 60% of Ni, 18 to 30% of Cr, 2.0 to 5.0% of B, 2.0 to 5.0% of Si, 0.2 to 1.2% of C, at most 15% of Fe and at most 1% of impurities. Raw materials are mixed according to the components; the mixed raw materials are melted in a heating device. When the temperature rises to 1400 to 1500 DEG C, silicon iron is added; then, a deoxidizing agent, an exhaust agent and a slag removal agent are added; the alloy liquid is fully mixed and purified. Afterwards, slag is harrowed and pressed in mixed rare earth by a bell cover. When the temperature rises to about 1500 DEG C, the alloy liquid is discharged after quiescence of 3 to 5 minutes. The alloy liquid is injected into a powder preparation device; alloys are gasified and atomized under the protection of inert gases. The liquid alloys are prepared into powder of 100 to 350 meshes.
Description
Technical field
The present invention relates to rare earth alloy powder powder material and preparation method thereof, be used for the surfacing of oil drilling and extracting equipment component.
Background technology
Present oil drilling and extracting equipment part cylinder sleeve, valve body, valve seat, the drilling rod wear-resistant ring, parts such as extension tongs dental lamina adopt 100V, rich chromium cast iron, high carbon and high chromium cast iron, wear resistant alloy material integral casting formings such as 20CrMo, handle by once annealing or normalizing and secondary quenching and to make hardness reach HRC 〉=56, this traditional material and complete processing, the process complexity, production cycle is long, the scrap rate height, cost is big, and the poor toughness of material, crackle and brittle failure phenomenon often take place in making processing and use, workpiece does not reach the purpose of creep rupture life, directly influences petroleum drilling operation.
Summary of the invention
The objective of the invention is to improve the wear resisting property of workpiece, simplify production technique, reduce production costs.
Rare earth nickel-chromium alloy powder material is measured its composition by weight percentage and is: RE0.5 ∽ 3.5%, Ni50 ∽ 60%, Cr18 ∽ 30%, B2.0 ∽ 5.0%, Si2.0 ∽ 5.0%, C0.2 ∽ 1.2, Fe≤15%, impurity≤1%; The preparation method of above-mentioned rare earth nickel-chromium alloy powder material is: prepare burden by above-mentioned alloying constituent; to melt in the starting material heating unit that prepare; treat to add when temperature rises to 1400～1500 ℃ ferrosilicon; and then add deoxidation, exhaust, slag-cleaning agent; fully stir and purify alloy liquid; harrow slag then; be pressed into mishmetal with bell jar; when rising to 1500 ℃ of left and right sides, temperature comes out of the stove after static 3～5 minutes; alloy liquid is injected powder manufacturing apparatus; at protection of inert gas therapeutic method to keep the adverse qi flowing downward atomized alloy, liquid alloy is prepared into 100～350 order powder.
Beneficial effect of the present invention is: nickel in its composition and chromium can improve hardness, wear resistance and the corrosion resistance of alloy material, fuse into antioxidant property, hardness and wear resisting property that chromium metal can improve alloy in the nickel-base alloy, form nickel chromium triangle sosoloid (NiCr), chromium can also form boron chromium cpd (Cr with boron, carbon
2B, CrB) and carbon chromium cpd (Cr
7C
3, Cr
23C
6) the raising alloy rigidity; Add mishmetal and can purify alloy, crystal grain thinning, reinforcement nickel chromium triangle sosoloid, improve the wear resisting property of alloy; Boron and silicon can make material form new particle in fusion process, strengthen wear resisting property, and have automatic deoxidation and return slag ability.Its hardness of cast form height without any need for heat treatment process, can directly use at the workpiece surface surfacing.After invention is applied to parts such as mud slurry pump cylinder jacket, valve body, valve seat, can save traditional monoblock casting and secondary insert technology, the part of manufacturing does not need heat treatment step, directly as cast condition is used, optimize manufacturing processing technic, shortened the manufacturing cycle, reduced manufacturing cost.Because good mechanical property and Practical Performance, the mud slurry pump cylinder jacket of manufacturing reaches more than 1000 hours work-ing life.
Specific implementation
Measure by weight percentage, composition of the present invention is: RE0.5 ∽ 3.5%, Ni50 ∽ 60%, Cr18 ∽ 30%, B2.0 ∽ 5.0%, Si2.0 ∽ 5.0%, C0.2 ∽ 1.2, Fe≤15%, impurity≤1%.
Prepare burden by above-mentioned alloying constituent; with the starting material pure nickel plate for preparing; chromium metal; ferro-boron; pure iron; melt in the disposable middle frequency furnace of packing into such as carbon granules; add deoxidation again after treating to add ferrosilicon when temperature rises to 1400～1500 ℃; exhaust; slag-cleaning agent; fully stir and purify alloy liquid; harrow slag then; be pressed into mishmetal with bell jar; static 3～5 minutes sampling analysis when temperature rises to 1500 ℃ of left and right sides afterwards; come out of the stove after qualified; alloy liquid is injected powder manufacturing apparatus,, liquid alloy is prepared into 100～350 order powder at protection of inert gas therapeutic method to keep the adverse qi flowing downward atomized alloy; then, sifting sort; store.Adopt spray welding process at workpiece surface melting welding 0.5～3mm thick wear-resistant, preservative coat again in the qualified rare earth nickel-chromium alloy powder of preparation, and fuse into one securely, finish workpiece through the processing grinding with base material.
Claims (2)
1, rare earth nickel-chromium alloy powder material is characterized in that measuring by weight percentage its composition and is: RE0.5 ∽ 3.5%, Ni50 ∽ 60%, Cr18 ∽ 30%, B2.0 ∽ 5.0%, Si2.0 ∽ 5.0%, C0.2 ∽ 1.2, Fe≤15%, impurity≤1%.
2, the preparation method of rare earth nickel-chromium alloy powder material; it is characterized in that preparing burden by the described alloying constituent of claim 1; to melt in the starting material heating unit that prepare; treat to add when temperature rises to 1400～1500 ℃ ferrosilicon; and then add deoxidation, exhaust, slag-cleaning agent; fully stir and purify alloy liquid; harrow slag then; be pressed into mishmetal with bell jar; when rising to 1500 ℃ of left and right sides, temperature comes out of the stove after static 3～5 minutes; alloy liquid is injected powder manufacturing apparatus,, liquid alloy is prepared into 100～350 order powder at protection of inert gas therapeutic method to keep the adverse qi flowing downward atomized alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031346030A CN1274866C (en) | 2003-09-03 | 2003-09-03 | Rare earth nickel chromium alloy powdered material and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031346030A CN1274866C (en) | 2003-09-03 | 2003-09-03 | Rare earth nickel chromium alloy powdered material and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590576A CN1590576A (en) | 2005-03-09 |
| CN1274866C true CN1274866C (en) | 2006-09-13 |
Family
ID=34597169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031346030A Expired - Fee Related CN1274866C (en) | 2003-09-03 | 2003-09-03 | Rare earth nickel chromium alloy powdered material and its preparation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1274866C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643194B (en) * | 2013-12-10 | 2015-10-28 | 镇江市华阳机电制造有限公司 | A kind of Wear-resistant Treatment technique of instrument valve spool |
| CN104827027B (en) * | 2015-06-05 | 2017-01-18 | 哈尔滨工程大学 | Method for preparing Ni-(ta/Zr/Hf)-Re alloy powder for plasma cladding |
| CN105861880A (en) * | 2016-04-18 | 2016-08-17 | 华能国际电力股份有限公司 | Plasma spray welding rare earth nickel-based alloy suitable for boiler pipeline and preparation method thereof |
| CN105937013B (en) * | 2016-05-31 | 2017-10-27 | 同济大学 | High-performing car lubricating oil pump precision gear metallurgical powder and gear preparation method |
-
2003
- 2003-09-03 CN CNB031346030A patent/CN1274866C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1590576A (en) | 2005-03-09 |
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