CN1626307A - Formulation of spray welding powder for tungsten carbide - Google Patents
Formulation of spray welding powder for tungsten carbide Download PDFInfo
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- CN1626307A CN1626307A CN 200310107222 CN200310107222A CN1626307A CN 1626307 A CN1626307 A CN 1626307A CN 200310107222 CN200310107222 CN 200310107222 CN 200310107222 A CN200310107222 A CN 200310107222A CN 1626307 A CN1626307 A CN 1626307A
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- tungsten carbide
- welding powder
- spray welding
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- powder
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Abstract
A tungsten carbide powder for spray welding to strengthen the antiwear surface of the workpiece contains tungsten carbide (70-80 wt.%), Ni (13.5-18), Cr (2.5-4.5), B (0.8-1.4), Si (1.0-1.7), Fe (1.0-6.0) and C (0-0.2). It can elongate the service life of said workpiece by 9-14 times.
Description
Technical field
The present invention relates to a kind of welding material of powdered-metal, more particularly, is about tungsten carbide spray welding powder prescription and purposes.
Background technology
Current domestic similar tungsten carbide spray welding powder such as Shanghai smelt, and the weight of tungsten carbide content is 20%, 25% in its prescription of ON ' r-～Wq9, GNI--Wc2 that factory produces and GNT-Wc3.With 35%: the weight ratio of tungsten carbide content is divided into 20%, 40% and 50% in its prescription of the PHNIWC--60A of southwestern metal product plant production, PHNIWC--60B and PHNIWC--80.There is not self-fluxing nature based on tungsten carbide particle itself, with the few wettability of substrate metal material, can oneself be molten withered on the surface of substrate metal, thereby prior art thinks that increasing tungsten carbide content can give and use band adopt difficulty, even can not surfacing.Because tungsten carbide spray welding powder has the content puppet of the tungsten carbide that plays wear-resisting effect in the prescription now so wear-resisting weak effect is not used for the intensive treatment of high abrasion spare as the wearing face of tile machinery and accessory as yet.
Summary of the invention
The objective of the invention is to adjust existing tungsten carbide spray welding powder prescription, improve the welding powder self-fluxing nature, improve its wettability, make the content of tungsten carbide reach 70～80%, to increase the wearability of welding powder, make it to be widely used in the intensive treatment of the wearing face of tile machinery and accessory.
Prescription of the present invention, by tungsten carbide, compositions such as nickel, chromium, boron, silicon, iron, carbon are formed, and it is characterized in that each composition weight proportion is: tungsten carbide 70-80%, nickel 13.5-18%, chromium 2.5-4.5%.Boron 0.8-1.4% silicon 1.0-1.7%, iron 1.0-6.0%, carbon≤0.2%.The above-mentioned material powder size is uniformly mixed to form the tungsten carbide spray welding powder that loose thickness is 3.5-7.0 for the 150-300 order.This welding powder oxygen one acetylene flame surfacing torch, the powder heating is sprayed, be deposited on the steel surface of the work and when solidifying, firmly bite the tungsten carbide particle that is evenly distributed on its surface, thereby form one deck wearing coat at surface of the work by the metal that surface of the work has melted.
The tungsten carbide spray welding powder that adopts prescription of the present invention to make, its boiling property is 16～16 seconds/50 grams in the use, layer hardness is greater than HRC-55, be convenient to account for the tungsten carbide particle hard phase of its surface area more than 60% at the surface of the work one deck that evenly distributes, be used for brick machinery and equipment and accessory such as brick machine reamer, the intensive treatment that mixer stirs vulnerable part wearing faces such as leaf can account on the prior art basis to make and prolong 9-14 its service life doubly.
The specific embodiment
Tungsten carbide 70-80%, nickel 13.5-18%, chromium 2.5-4.5%.Boron 0.8-1.4% silicon 1.0-1.7%, iron 1.0-6.0%, carbon≤0.2% material powder granularity is uniformly mixed to form the tungsten carbide spray welding powder that loose thickness is 3.5-7.0 for the 150-300 order, this welding powder oxygen one acetylene flame surfacing torch, the powder heating is sprayed, be deposited on the steel surface of the work and when solidifying, firmly bite the tungsten carbide particle that is evenly distributed on its surface, thereby form one deck wearing coat at surface of the work by the metal that surface of the work has melted.
Claims (2)
1. a tungsten carbide spray welding powder prescription is characterized in that, each composition weight proportion is: tungsten carbide 70-80%, nickel 13.5-18%, chromium 2.5-4.5%.Boron 0.8-1.4% silicon 1.0-1.7%, iron 1.0-6.0%, carbon≤0.2%.
2. tungsten carbide spray welding powder prescription according to claim 1 is characterized in that, each composition powder size is the 150-300 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310107222 CN1626307A (en) | 2003-12-08 | 2003-12-08 | Formulation of spray welding powder for tungsten carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310107222 CN1626307A (en) | 2003-12-08 | 2003-12-08 | Formulation of spray welding powder for tungsten carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1626307A true CN1626307A (en) | 2005-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310107222 Pending CN1626307A (en) | 2003-12-08 | 2003-12-08 | Formulation of spray welding powder for tungsten carbide |
Country Status (1)
| Country | Link |
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| CN (1) | CN1626307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666389A (en) * | 2019-10-18 | 2020-01-10 | 郑州机械研究所有限公司 | Fiber-toughened tungsten carbide welding rod |
-
2003
- 2003-12-08 CN CN 200310107222 patent/CN1626307A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666389A (en) * | 2019-10-18 | 2020-01-10 | 郑州机械研究所有限公司 | Fiber-toughened tungsten carbide welding rod |
| CN110666389B (en) * | 2019-10-18 | 2021-07-02 | 郑州机械研究所有限公司 | Fiber-toughened tungsten carbide welding rod |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |