CN1063906A - Laser-alloying coating method for grain-making die - Google Patents
Laser-alloying coating method for grain-making die Download PDFInfo
- Publication number
- CN1063906A CN1063906A CN91100637A CN91100637A CN1063906A CN 1063906 A CN1063906 A CN 1063906A CN 91100637 A CN91100637 A CN 91100637A CN 91100637 A CN91100637 A CN 91100637A CN 1063906 A CN1063906 A CN 1063906A
- Authority
- CN
- China
- Prior art keywords
- mould
- flour milling
- laser
- coating method
- grain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 14
- 238000005275 alloying Methods 0.000 title claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 21
- 235000013312 flour Nutrition 0.000 claims abstract description 15
- 238000003801 milling Methods 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000005469 granulation Methods 0.000 claims abstract description 7
- 230000003179 granulation Effects 0.000 claims abstract description 7
- 238000004080 punching Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000009760 electrical discharge machining Methods 0.000 claims description 3
- 238000007750 plasma spraying Methods 0.000 claims description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- -1 polyethylene Polymers 0.000 abstract description 8
- 239000004698 Polyethylene Substances 0.000 abstract description 7
- 229920000573 polyethylene Polymers 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000008676 import Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The granulation mould is one of key part on the chemical materials production line as polyethylene granulation mould, generally by import, uses laser-alloying coating method for grain-making die of the present invention at present, can repair the mould of scrapping, and also can be used for making new mould.Promptly prepare the preparation of hybrid alloys powder, heat coating, laser scanning remelting, last flour milling arrangement and punching by flour milling.Utilize the mould flour milling of manufacturing of the present invention or reparation, surface hardness can reach H
vMore than=1000, have good wear resistance, solidity to corrosion.
Description
The present invention relates to laser processing method.
Granulation mould for example polyethylene granulation mould is generally discoid, which is provided with some apertures, when producing polyethylene, polyethylene is subjected to after the thermal softening to squeeze in through aperture from mould one side and extrudes from opposite side, utilize the scraper of high speed rotating constantly polyethylene to be scraped then and granulate, and solidify with water cooling.Because scraper is to the friction of die surface and the corrosion of high-temperature water, the life-span only one year about, cause the mould of scrapping in a large number.Through investigation, used mould all is import, is to be substrate with the 3Cr13 stainless steel, and the surface increases the Wimet of one deck abrasion-proof corrosion-proof with the method for built-up welding, costs an arm and a leg.
Up to now, someone attempts the mould scrapped with following method reparation, the first, tungsten carbide button's piece, promptly give and make hard alloy blocks earlier, method with soldering is fixed in being subjected on the flour milling of mould then, its shortcoming is a complex process, and the hard alloy blocks of inlaying comes off easily, even has an accident; The second, hot spray coating method, giving the powdered alloy of joining with heat spraying method is sprayed on mould and is subjected on the flour milling, but owing to belong to machinery or half mechanical bond between sprayed coating inside and sprayed coating and the die surface, there are many shortcomings, cause easily and come off, and when boring, be difficult to obtain high-quality Kong Ren.
Purpose of the present invention just is to overcome above-mentioned deficiency, proposes a kind of laser-alloying coating method for grain-making die.In order to die surface coating hard alloy layer to coming of new, or at written-off die surface coating hard alloy layer.
In order to overcome the deficiency of above-mentioned prior art, the present invention proposes laser-alloying coating method for grain-making die, its technology characteristics is:
1. the mould flour milling is prepared, and comprises cleaning, and it is flat to rub, plug-hole sandblast hacking.
2. prepare the hybrid alloys powder.
3. heat coating with thermospray or plasma spraying method, is sprayed on mixed powder and gives on the mold heat flour milling.
4. laser scanning remelting, flour milling arrangement and punching.
Optional nickel-base alloy+the cobalt coated tungsten carbide of said hybrid alloys powder+cobalt+carbon.Said thermospray, one time uniform thickness is chosen as 1.2～2 millimeters; Said laser scanning remelting, power can be selected in more than the 1KW, and hot spot is φ more than 2 millimeters, and sweep velocity is between V=5～20 mm/second.Said punching is chosen as electric spark-erosion perforation.
Aforesaid way promptly is applicable to the preparation of coming of new die surface, also is suitable for the reparation of written-off die surface.
Utilize aforesaid method, on the original mould matrix, thermospray hybrid alloys powder, laser remolten then, base material is little molten, forms one deck hard alloy layer, be subjected to heat rating little like this, speed of cooling is fast, can not influence the metallographic structure of matrix, and hard alloy layer and matrix form metallurgical binding, difficult drop-off, wear-resisting, corrosion-resistant, overcome the defective of prior art.
Introduce below and utilize one embodiment of the present of invention.
The polyethylene granulation utilizes polyethylene granulation mould to carry out, and upper layer requires wear-resisting, corrosion-resistant, thereby requires to be subjected to make on the flour milling one deck new hard alloy layer different with matrix properties at die matrix.This is suitable for the coming of new mould certainly, also is suitable for scrapping mould to be repaired.Its technological process is such:
1. the mould flour milling is prepared, and this comprises cleaning, deoils, polishes, plug-hole, sandblast hacking.
2. prepare the hybrid alloys powder, what be suitable for here is:
36% nickel-base alloy (Ni-cr-B-Si)+60%Co(WC)+3%Co+1%C
3. with thermospray or plasma spraying method, above-mentioned hybrid alloys powder spraying on the above-mentioned flour milling that has prepared that gives heat (about 150 ℃) mould.
4. 250 ℃～280 ℃ of heat are given in laser scanning remelting earlier, and the laser scanning gold is molten then, and power is about 2KW, and hot spot is taken as φ 4, and sweep velocity is V=5～20 mm/second, if need be thicker, then can spray, laser remolten again again.
5. cleaning, the correct grinding flour milling is used electric spark-erosion perforation from the former porose position of mould reverse side, guarantee position, hole and circularity, and hole smooth finish is
5～
6, grind the endoporus that rubs then and make and reach
7～
9.
The mould that utilizes the preparation of such method or repair, microstructure is finer and close, and hardness reaches or increases wear resistance a little more than the hardness (surface hardness reaches more than the HV1000) of import mould, and solidity to corrosion has improved the life-span.In addition, present more than 20 production line in the whole nation annually consumes a lot of moulds, all relies on import, and the import price of a mould is 3～8 dollars (according to sizes, shape and different).Use method of the present invention, under the prerequisite of ensuring the quality of products, can save a large amount of foreign exchanges, good social benefit and economic benefit are arranged.
Claims (2)
1, a kind of laser-alloying coating method for grain-making die, its technology characteristics is:
(1) the mould flour milling is prepared, and comprises cleaning, flat, the plug-hole of rubbing, sandblast hacking;
(2) preparation hybrid alloys powder;
(3) heat coating is being given the hybrid alloys powder spraying on the mold heat flour milling with thermospray or plasma spraying method;
(4) laser scanning remelting;
(5) flour milling arrangement and punching.
2, according to the granulation mould alloy coating method of claim 1, it is characterized in that, said hybrid alloys powder is nickel-base alloy+cobalt coated tungsten carbide+cobalt+carbon, uniform thickness of said thermospray is elected 1.2～2 millimeters as, said laser scanning remelting, power is elected as more than the 1KW, and hot spot is that φ is more than 2 millimeters, sweep velocity is between V=5～20 mm/second, and electric spark-erosion perforation is elected in said punching as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91100637A CN1063906A (en) | 1991-02-07 | 1991-02-07 | Laser-alloying coating method for grain-making die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91100637A CN1063906A (en) | 1991-02-07 | 1991-02-07 | Laser-alloying coating method for grain-making die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1063906A true CN1063906A (en) | 1992-08-26 |
Family
ID=4904742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91100637A Pending CN1063906A (en) | 1991-02-07 | 1991-02-07 | Laser-alloying coating method for grain-making die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063906A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346886C (en) * | 2003-10-16 | 2007-11-07 | 黄仲新 | Sewing machine anti-wear lubircating-piece surface treating method |
| CN102094198A (en) * | 2011-03-25 | 2011-06-15 | 天津市汇利通金属表面技术有限公司 | Alloy laser-cladding method for surface of helical casing in screw pump |
| CN102728989A (en) * | 2012-06-02 | 2012-10-17 | 安徽国通高新管业股份有限公司 | Repairing process of pits on forming mold |
| CN102776468A (en) * | 2012-08-10 | 2012-11-14 | 昆山乔锐金属制品有限公司 | Preparation technology for high-performance steel-based coating |
| CN101559538B (en) * | 2007-10-05 | 2013-09-11 | 斯奈克玛 | Process for altering an assembly of metal parts based on nickel or cobalt alloy by high temperature brazing |
| CN103600214A (en) * | 2013-12-06 | 2014-02-26 | 山东塔高矿业机械装备制造有限公司 | Processing technology for reproducing column head threaded holes of hydraulic support upright column |
| CN104962905A (en) * | 2015-06-17 | 2015-10-07 | 北京瑞观光电科技有限公司 | High-speed rail wheel die laser alloying method |
| CN105945543A (en) * | 2016-06-30 | 2016-09-21 | 南通瑞强机械制造有限公司 | Manufacturing method for brick machine mold and spraying method used in manufacturing process |
| CN110499505A (en) * | 2019-09-02 | 2019-11-26 | 安徽工业大学 | A kind of high-temperature self-lubrication cobalt-based is wear-resistant composite bed, preparation method and application |
-
1991
- 1991-02-07 CN CN91100637A patent/CN1063906A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346886C (en) * | 2003-10-16 | 2007-11-07 | 黄仲新 | Sewing machine anti-wear lubircating-piece surface treating method |
| CN101559538B (en) * | 2007-10-05 | 2013-09-11 | 斯奈克玛 | Process for altering an assembly of metal parts based on nickel or cobalt alloy by high temperature brazing |
| CN102094198A (en) * | 2011-03-25 | 2011-06-15 | 天津市汇利通金属表面技术有限公司 | Alloy laser-cladding method for surface of helical casing in screw pump |
| CN102094198B (en) * | 2011-03-25 | 2012-05-23 | 天津市汇利通金属表面技术有限公司 | Alloy laser-cladding method for surface of helical casing in screw pump |
| CN102728989A (en) * | 2012-06-02 | 2012-10-17 | 安徽国通高新管业股份有限公司 | Repairing process of pits on forming mold |
| CN102728989B (en) * | 2012-06-02 | 2014-11-26 | 安徽国通高新管业股份有限公司 | Repairing process of pits on forming mold |
| CN102776468A (en) * | 2012-08-10 | 2012-11-14 | 昆山乔锐金属制品有限公司 | Preparation technology for high-performance steel-based coating |
| CN103600214A (en) * | 2013-12-06 | 2014-02-26 | 山东塔高矿业机械装备制造有限公司 | Processing technology for reproducing column head threaded holes of hydraulic support upright column |
| CN104962905A (en) * | 2015-06-17 | 2015-10-07 | 北京瑞观光电科技有限公司 | High-speed rail wheel die laser alloying method |
| CN105945543A (en) * | 2016-06-30 | 2016-09-21 | 南通瑞强机械制造有限公司 | Manufacturing method for brick machine mold and spraying method used in manufacturing process |
| CN105945543B (en) * | 2016-06-30 | 2018-04-03 | 南通瑞强机械制造有限公司 | A kind of spraying method used in the manufacture method and manufacturing process of brick machine mould |
| CN110499505A (en) * | 2019-09-02 | 2019-11-26 | 安徽工业大学 | A kind of high-temperature self-lubrication cobalt-based is wear-resistant composite bed, preparation method and application |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |