CN86101207A - New method of amending surface defects of castings - Google Patents
New method of amending surface defects of castings Download PDFInfo
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- CN86101207A CN86101207A CN 86101207 CN86101207A CN86101207A CN 86101207 A CN86101207 A CN 86101207A CN 86101207 CN86101207 CN 86101207 CN 86101207 A CN86101207 A CN 86101207A CN 86101207 A CN86101207 A CN 86101207A
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- amending
- castings
- packing material
- new method
- surface defects
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Abstract
The present invention is the new method of amending surface defects of castings.It has broken through traditional melting welding process for welding repair, the new repair technology that bonds together with the atom method of diffusion between packing material and mother metal.Adopt the blemish of this method casting repair, the same hardness of its mend and parent, same color and luster, and do not have the microgap crackle, reached the requirement of Ministry of Machine-Building Industry.The present invention is easy and simple to handle, and the repairing efficiency height has high economic benefit.
Description
The invention belongs to the method for repairing and mending of casting surface defect.
Cast(ing) surface defective occurs and is difficult to avoid, because it relates to each technical process from raw material to the solidification forming.In casting industry,, casting surface defect is repaired with regard to needing for improving the yield rate of product.Repairing with machine tool guideway is an example, and according to Ministry of Machine-Building Industry's requirement: the difference of hardness of (1) mend and parent must not surpass the HB25 degree; (2) color and luster after repairing should with the parent basically identical.But all at present method for repairing and mending all do not reach specified standard, can not fundamentally solve the problem of repairing quality.As cold welding soldering method, very easily form sclerosis in soldering place and heat affected area thereof and reach defectives such as micro-flaw mutually.Hot weld soldering method and for example, though can prevent to produce the sclerosis phase to a certain extent, owing to need the workpiece preheating, thereby power consumption is big, efficient is low, complex process, quality instability, foundry goods easily produce shortcomings such as stress and distortion.And two kinds of methods all are difficult to solve the color consistency problem.In recent years, though factory has adopted nickel-base welding rod cold welding soldering method more at large,, its color and luster, hardness etc. make its range of application be subjected to bigger restriction because all can not reaching the requirement consistent with mother metal.
In addition, insert method in the defective, tangible repairing vestige is all arranged if get to be processed into the mother metal identical materials that taper pin shape is pressed into fault location with mechanical force again or to transfer with powerful metallochemistry binding agent with metal dust.Thereby many producers would rather melt down defective foundry goods again for prestige and product quality, also are reluctant it is repaired and uses reluctantly, thereby have improved the percent defective of product, cause bigger economic loss.With the machine industry is example, the annual only bed ways defective in the whole nation and the foundry goods scrapped promptly reaches 500～1,000 ten thousand yuan/year (comprising the loss of processing charges).
The repair method that the present invention is intended to break traditions works out and a kind ofly can guarantee repairing quality, reaches specification requirement that Ministry of Machine-Building Industry is proposed, and new method for repairing and mending easy and simple to handle again, as to improve repairing efficiency reduces percent defective, reduces cost, and increases economic efficiency.
The present invention is the integrated application of composite casting principle in salvage of casting technology during the diffusion in the welding is connect principle and casts.It has broken through traditional welding process, makes the new repair technology that bonds together with the atom method of diffusion between packing material and the mother metal.The main points of technology of the present invention are to get product to be made packing material by the material that dribbleware adapts, on the surface of packing material with the side of hot dipping degree or plating with plate the skim activator, to reduce the activation energy of atom.To cast(ing) surface wait to fill a vacancy fall into be regular hole shape with electric drill or hand drill cleaning earlier after, treat the surface of perforations adding again and handle with another kind of activator.Then the surface is added 1～100 atmospheric pressure with the packing material of coating with methods such as air pressure or hydraulic pressure, packing material can closely be contacted with the composition surface for the treatment of perforations adding, help the atom diffusion.Energising in pressurization plays heat effect, and its energising voltage is 1～15 volt, and electrical current is 1～100 kilo-ampere, and be 1～60 minute conduction time, active layer and top layer iron atom is melted separate And to spread rapidly, and packing material and mother metal are bonded to one.Then, be cooled to normal temperature lentamente, promptly finish a repair procedure with the cooldown rate of 3 ℃～60 ℃ of per minutes.The height that comes regulation voltage according to the area and the degree of depth of repairing area and the size of electric current, just can control heating-up temperature by the height of regulation voltage and the size of electric current, just can control the hardness of mend by controlling heating-up temperature and cooling velocity, make it consistent with parent hardness.
Because packing material and fertile material that this method for repairing and mending is got adapt, so the color and luster of mend also is consistent.Again since between mend and the mother metal for atom level combines, so no microgap crackle.The present invention is easy and simple to handle, and the repairing efficiency height is low to operating personnel's specification requirement, easy to utilize, and high economic benefit is arranged.
Claims (4)
1, new method of amending surface defects of castings, be that to get the material that adapts with mother metal be packing material, after the blemish of foundry goods is regular hole with drilling processing cleaning, again packing material is put into technologies such as treating perforations adding, it is characterized in that at the surface of packing material plating skim activator, and in the another kind of Treatment with activating agent in the surface for the treatment of perforations adding after cleaning, switch on simultaneously to putting into the packing material Jia Ya And that treats perforations adding, slowly cool to normal temperature then.
2,, it is characterized in that described is 1～100 atmospheric pressure to the pressure of putting into the packing material pressurization for the treatment of perforations adding according to the described new method of amending surface defects of castings of claim 1.
3, according to the described new method of amending surface defects of castings of claim 1, it is characterized in that described energising voltage is 1～15 volt, electrical current is 1～100 kilo-ampere, be 1～60 minute conduction time.
4, according to the described new method of amending surface defects of castings of claim 1, it is characterized in that describedly, slowly cool off with the cooldown rate of 3 ℃～60 ℃ of per minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86101207 CN86101207A (en) | 1986-02-26 | 1986-02-26 | New method of amending surface defects of castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86101207 CN86101207A (en) | 1986-02-26 | 1986-02-26 | New method of amending surface defects of castings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86101207A true CN86101207A (en) | 1987-09-09 |
Family
ID=4801327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86101207 Pending CN86101207A (en) | 1986-02-26 | 1986-02-26 | New method of amending surface defects of castings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86101207A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102478C (en) * | 2000-10-27 | 2003-03-05 | 重庆大学 | Crack welding and repairing process for ferrous metal parts |
| US7713361B2 (en) | 2003-06-11 | 2010-05-11 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Metal product producing method, metal product, metal component connecting method, and connection structure |
| CN101618494B (en) * | 2009-07-21 | 2012-02-01 | 神龙汽车有限公司 | Method for restoring surface defects of casting machine after machining |
| CN103056586A (en) * | 2012-12-14 | 2013-04-24 | 贵州黎阳航空动力有限公司 | Repairing process for surface defect of magnesium alloy casting |
| CN104942276A (en) * | 2015-06-02 | 2015-09-30 | 遵义金业机械铸造有限公司 | Casting gap repair method |
| CN109454349A (en) * | 2018-11-23 | 2019-03-12 | 安徽应流集团霍山铸造有限公司 | A kind of heat treatment method reducing steel-casting machined surface weld hardness |
| CN113399659A (en) * | 2021-04-29 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting surface defect repairing method |
-
1986
- 1986-02-26 CN CN 86101207 patent/CN86101207A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102478C (en) * | 2000-10-27 | 2003-03-05 | 重庆大学 | Crack welding and repairing process for ferrous metal parts |
| US7713361B2 (en) | 2003-06-11 | 2010-05-11 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Metal product producing method, metal product, metal component connecting method, and connection structure |
| CN1826430B (en) * | 2003-06-11 | 2011-12-28 | 株式会社Ihi | Metal product and manufacture method thereof, metal component joint method and joint structure body |
| CN101618494B (en) * | 2009-07-21 | 2012-02-01 | 神龙汽车有限公司 | Method for restoring surface defects of casting machine after machining |
| CN103056586A (en) * | 2012-12-14 | 2013-04-24 | 贵州黎阳航空动力有限公司 | Repairing process for surface defect of magnesium alloy casting |
| CN103056586B (en) * | 2012-12-14 | 2016-07-06 | 贵州黎阳航空动力有限公司 | A kind of repair technology of Mg alloy castings surface defect |
| CN104942276A (en) * | 2015-06-02 | 2015-09-30 | 遵义金业机械铸造有限公司 | Casting gap repair method |
| CN109454349A (en) * | 2018-11-23 | 2019-03-12 | 安徽应流集团霍山铸造有限公司 | A kind of heat treatment method reducing steel-casting machined surface weld hardness |
| CN113399659A (en) * | 2021-04-29 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting surface defect repairing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |