CN1233500C - Soldering wire with core being wraped utilized in pile up welding - Google Patents
Soldering wire with core being wraped utilized in pile up welding Download PDFInfo
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- CN1233500C CN1233500C CN 02139493 CN02139493A CN1233500C CN 1233500 C CN1233500 C CN 1233500C CN 02139493 CN02139493 CN 02139493 CN 02139493 A CN02139493 A CN 02139493A CN 1233500 C CN1233500 C CN 1233500C
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Abstract
The present invention relates to a metal component surface abrasion resistance strengthening material for build-up welding, and more specifically relates to a wrapped core soldering wire for build-up welding. The present invention overcomes the defects that abrasion resistance and antifriction ability can not be reasonably matched, and manufacturability is poor in the prior art. The present invention has the technical solving scheme that a wrapped core soldering wire for build-up welding is composed of a low carbon steel wrapper and powder for a core part, wherein the powder for a core part and the low carbon steel wrapper have a weight percentage of 30% to 40%: 70% to 60%, and the powder for a core part is formed by mixing the following substances measured by weight percentage: 25% to 30% of Cr, 15% to 19% of Ni, 3% to 5% % of Mn, 2% to 5% of Si, 3.5 % to 6% of B, 1% to 3% of C, and Fe as the rest. The present invention can satisfy the basic performance requirements of new-type alloy for wear resistance and friction reducing performance, and has the advantages of superior manufacturability and reasonable matching of wear resistance and friction reducing performance. The present invention has a wide range of application, and is widely applied to the field of a surface treatment project of a petroleum industry machine, a subsurface tool, etc.
Description
Affiliated technical field:
The present invention relates to a kind of built-up welding material of the wear-resisting reinforcement of metal component surface, be specifically related to a kind of built-up welding with wrapping the core welding wire.
Background technology:
The loss that hardware causes because of wearing and tearing is quite huge.According to statistics, in industrially developed country, the economic loss that causes owing to wearing and tearing accounts for 1～4% of whole national economy budget.In China; because scientific and technological level is low; be several times lower than even tens times than external like product the service life of most machine components; a wherein considerable part is to scrap in advance because of the wear resistence difference; this has not only consumed a large amount of steel spare parts; and, reduced production efficiency owing to the part reason need be shut down maintenance, wasted lot of manpower and material resources.Wearing and tearing generally all occur in surface of the work, and improving the surface of the work antiwear property by surface engineering technology at present is newer method.In the application of these new technologies (as thermal spraying, built-up welding, thermo-chemical treatment, vapour deposition, plating etc.), the selection of wear resistant friction reducing alloy material is the key of technology success.The problem of wear resistant friction reducing alloy material existence at present is that antifriction quality can not rationally mate, or the wear resistence of self is very high, but very serious to the wearing and tearing of another friction member (fastness), the coefficient of friction height between the fastness; Be that alloy material is less to the wearing and tearing of component surface, coefficient of friction is also lower, but self serious wear, the alloy loss is serious, the cost height.For example, in the fastness of oil drill rocker and sleeve pipe, if at the surface overlaying 14-30 of tool joint order tungsten carbide, then tungsten carbide itself is wear-resisting, but is 15% to the casing wear rate, coefficient of friction 0.22.If in the surface overlaying conventional iron-based alloys of tool joint, then can reduce to 8% to the wear rate of sleeve pipe, coefficient of friction 0.16, but self wearing and tearing very fast.
Summary of the invention:
The present invention will overcome the prior art wear resistence and antifriction quality can not rationally mate, the shortcoming of manufacturability difference.
For overcoming the shortcoming of prior art, technical solution of the present invention is: a kind of built-up welding is with wrapping the core welding wire, its special character is, by mild steel foreskin and core powder constituent, the percentage by weight of core powder and mild steel foreskin is 30～40%: 70～60%, described core powder is mixed by following material by weight percentage, and Cr 20～28%; Ni 12～19%; Mn 2.0～2.9%; Si 3.0～3.9%; B 3.0～3.8%; C 1.0-1.6%, the Fe surplus.
The percentage by weight of above-mentioned core powder and mild steel foreskin is 33～35%: 67～65% o'clock, and the wear resistant friction reducing effect is better.
Above-mentioned core powder is mixed by following material by weight percentage, and Cr 25%; Ni 17%; Mn 2.6%; Si 3.7%; B 3.7%; C 1.4%; The Fe surplus, this scheme wear resistant friction reducing effect is best.
Compared with prior art, advantage of the present invention is:
1, the present invention can satisfy the basic performance requirement of novel alloy Wear-resistant, promptly has the requirement of characteristics He " stability " of " balance wearing and tearing "." balance wearing and tearing " are meant under the prerequisite minimum to component wear, it is also little self to wear and tear, or in the wear range that allows, " stability " is no matter be meant that this alloy is under clear water or different mud condition, its antiwear property should keep relative stablizing, and should not change with condition to occur than big-difference.The present invention promptly is a kind of new alloy of preparing on the basis of wear resistant friction reducing alloy principle analysis, has good wear resistant friction reducing performance;
2, manufacturability is good: bag core welding wire of the present invention is when implementing, and bead-welding technology (wetability, levelability, deslagging, venting quality) is good, and the built-up welding rear surface is smoothly even, and crackle is few, does not have the piece that comes off;
3, wear resistence and antifriction quality coupling rationally: among the present invention, the prescription of core powder and proportioning make the present invention under clear water or different mud condition, have wear rate low the low characteristics of coefficient of friction, therefore has good performance, when forming fastness with medium carbon steel, coating wear resistence and antifriction quality surpass similar products at home and abroad; And the wearing and tearing of mating plate are compared with similar products at home and abroad, and small size raising is also arranged.For example, after the tool joint surface overlaying, overlay cladding is a cobblestone air quenching martensitic structure, organizes tinyly, and hardness is moderate.Mainly be that the adding of B alloying element has increased Ni in the martensite owing to Ni
3B, Ni
2B, Cr
2B, hard such as CrB point improves himself wear resistence greatly, and the abrasiveness to sleeve pipe is also lower simultaneously.By the wear resistant friction reducing alloy that the present invention produces, built-up welding shows by the wear test under clear water, barite and Iron Ore Powder mud in tool joint, compares with the steel joint, can prolong the tool joint life-span more than 2 times, reduces casing wear more than 50%;
4, the present invention is applied widely, is widely used in the Surface Treatment Engineering fields such as petroleum industry machinery, downhole tool, can be used for oil drill rocker, sucker rod and some other needs are wear-resisting and the surface abrasion resistance of the metallic magnetism spare of antifriction is strengthened.
The specific embodiment:
The present invention will be by being described in further detail with following preferred embodiment, but the present invention is not limited to following several embodiment.
(by weight percentage)
Wherein best with embodiment 3.
Preparation technology among the present invention is conventional preparation method.
Claims (3)
1, a kind of built-up welding is with wrapping the core welding wire, it is characterized in that: it is by mild steel foreskin and core powder constituent, the percentage by weight of core powder and mild steel foreskin is 30～40%: 70～60%, and described core powder is mixed by following material by weight percentage, and Cr 20～28%; Ni 12～19%; Mn 2.0～2.9%; Si 3.0～3.9%; B 3.0～3.8%; C 1.0-1.6%, the Fe surplus.
2, a kind of built-up welding as claimed in claim 1 is with wrapping the core welding wire, and it is characterized in that: the percentage by weight of described core powder and mild steel foreskin is 33～35%: 67～65%.
3, a kind of built-up welding as claimed in claim 1 or 2 is with wrapping the core welding wire, and it is characterized in that: described core powder is mixed by following material by weight percentage, and Cr 25%; Ni 17%; Mn 2.6%; Si 3.7%; B 3.7%; C 1.4%; The Fe surplus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139493 CN1233500C (en) | 2002-10-29 | 2002-10-29 | Soldering wire with core being wraped utilized in pile up welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139493 CN1233500C (en) | 2002-10-29 | 2002-10-29 | Soldering wire with core being wraped utilized in pile up welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415453A CN1415453A (en) | 2003-05-07 |
| CN1233500C true CN1233500C (en) | 2005-12-28 |
Family
ID=4750108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139493 Expired - Fee Related CN1233500C (en) | 2002-10-29 | 2002-10-29 | Soldering wire with core being wraped utilized in pile up welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1233500C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553855C (en) * | 2007-05-23 | 2009-10-28 | 山东大学 | A kind of sandwiched alloy powder block used for built-up welding and preparation method thereof and application |
| CN101870046B (en) * | 2010-06-03 | 2012-01-11 | 辽宁工程技术大学 | Impact-resistant and high-wear-resistant surfacing alloy material |
| CN102380716A (en) * | 2011-09-08 | 2012-03-21 | 北京工业大学 | Flux-cored wire for medium chromium boron-containing iron-based hardfacing and method for preparing surfacing alloys |
-
2002
- 2002-10-29 CN CN 02139493 patent/CN1233500C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1415453A (en) | 2003-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051228 Termination date: 20121029 |