CN1012885B - Welding agent and its use for reparing cast-iron part - Google Patents
Welding agent and its use for reparing cast-iron partInfo
- Publication number
- CN1012885B CN1012885B CN 87102464 CN87102464A CN1012885B CN 1012885 B CN1012885 B CN 1012885B CN 87102464 CN87102464 CN 87102464 CN 87102464 A CN87102464 A CN 87102464A CN 1012885 B CN1012885 B CN 1012885B
- Authority
- CN
- China
- Prior art keywords
- welding
- weight
- gas shielded
- shielded arc
- groove
- 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.)
- Expired
Links
Abstract
The present invention belongs to a repair class of iron casting. The welding flux is prepared from AL, Ni, Fe and other components (magnetic Fe3O4 powder as a main component) which are uniformly mixed according to a certain proportion, and powder size is 100 meshes. The welding flux is fully magnetized, CO2 gas shielded welding is adopted, and welding is carried out according to the cold welding requirements of cast iron. Thus, the purpose of repair can be achieved.
Description
The invention belongs to ironcasting and repair class.
For the reparation that solves ironcasting multiple approaches and methods was arranged once in the world.Nickel-base welding rod welding technology as propositions such as the U.S.; The argon arc welding technology that the Soviet Union that relevant document is introduced proposes with the pure nickel welding wire; " method that prevents of component of machine crackle " that also has Japan Patent (clear 39-18230 bulletin) to introduce, this method is at the local bevel that crackle takes place; Mother metal is carried out 150～200 ℃ of preheatings; Imbed the pure nickel electrode core in the groove and carry out arc welding; The welding back is incubated 4 hours in 540～560 ℃, and carries out machining after the cooling in stove.These methods generally can solve the reparation problem of ironcasting, but used nickel-base welding rod and the welding wire of these methods cost an arm and a leg, and the welder is required height, as weld the improper bad problem of processability that then still exists.And complex process, productivity ratio are difficult to improve.And CO
2The former welding that is mainly used in steel part of gas shielded arc welding.
The present invention is with general CO
2Gas shielded arc welding adds the restorative procedure that is used for ironcasting behind the solder flux, has overcome the drawback that exists such as Japan Patent (clear 39-18230 bulletin).And with magnetization solder flux-its main component that US 3097979 is provided be manganese oxide, rutile, aluminium oxide, tri-iron tetroxide etc.; this magnetization agent is to enter welding region to finish the gas shield welding with granular with protective gas; not only on composition, and on adding mode and use object, essential difference is arranged.
A kind of magnetic flux that is used for gas shielded arc welding.It is characterized in that its composition is an AL6.9-11.1%(weight), Ni11.9-19.1%(weight), Cu1.5-2.4%(weight), Fe56.0-74.7%(weight) and less than 5% other (with magnetic Fe
3O
4Powder is main-＜4%, and the surplus impurity of bringing into for each raw material constitutes) composition evenly mix.Powder size is-100 orders.
The restorative procedure that aforementioned solder flux is used for ironcasting is to leave groove at position to be welded; It is characterized in that welding agent is fully magnetized, will clean out near the groove, and drying; Through abundant magnetized welding agent, its thickness can be fully with its degree of being molten into (routine I100, U20, then δ≤0.8mm with described standard in the topped equably skim of groove face; I80, U19, then δ≤0.5mm); Impose CO
2Gas shielded arc welding, welding job press cold welding of cast iron main points-weak point section, interrupted, disperse weldering, less electric current fusion penetration shallow, every section hammering stress-removal, normalizing pass leading portion are soft.-carry out.
Solder flux of the present invention is because of the arc space by strong oxidizing property not; make the fusion area have higher aluminum content and have strong graphitizability; use this solder flux when the reparation of ironcasting, because welding agent has been carried out abundant magnetization, the protected air-flow of solder flux dispels when having prevented welding.Thereby realized welding under the full location status, promptly workpiece can weld under situation about not dismantling.Use this solder flux also to have and guarantee the tensile strength that welding point is close with mother metal, fusion character is good, and processability such as is guaranteed at advantage.Owing to having fully phased out preceding preheating and the welding back of weldering mother metal is heat-treated technology simultaneously, and that employing is common CO to mother metal
2The welding wire of gas shielded arc welding, low price, technical process are greatly simplified, are easy to grasp, and have improved productivity ratio, and have obtained the welding point of high-quality.The reparation that this invention is used for engine cylinder head system, cylinder body has obtained satisfied result, produces effects obviously.
Below introduce embodiments of the invention:
The present invention is used for the reparation of the automobile engine cylinder-body face crack of the special model of French Baily.This crackle is to produce in the engine use.Method with head it off of the present invention is:
(1), leaves " U " type groove in the place that cylinder body cracks;
(2), solder flux of the present invention is magnetized;
(3), with groove and near clean out and drying;
(4), with fine aluminium silk friction groove face, slightly be silvery white in color to the surface;
(5), in the topped equably skim of groove face through abundant magnetized solder flux, its thickness is≤0.5mm, adopts the welding wire of φ 0.8mm H08Mn2SiA then, carries out CO
2Gas shielded arc welding, welding job is undertaken by the cold welding of cast iron main points, I=80A, U=19V when carrying out the bottom welding, during the weldering second layer, standard is got I=100A, U=20V, speed is grasped appropriateness, and layer is thinner, and welding quality is satisfied;
(6), weldment is carried out machining.
Claims (3)
1, a kind of magnetic flux that is used for gas shielded arc welding, the composition that it is characterized in that solder flux be AL6.9～11.1% (weight), Ni11.9～19.1% (weight), Fe56.0～74.7% (weight) and less than 5% (weight) other (with magnetic Fe
3O
4Powder＜4%, the surplus impurity of bringing into for each raw material constitutes) uniform ingredients mix.
2, the magnetic flux that is used for gas shielded arc welding according to claim 1 is characterized in that powder size is-100 orders.
3, use claim 1,2 described welding agent to be used for the restorative procedure of ironcasting, leave groove at position to be welded; Carry out machining on demand, it is characterized in that welding agent is fully magnetized; With groove and near clean out and drying; In the topped equably skim of groove face through abundant magnetized welding agent, its thickness with selected standard can be fully with its degree of being molten into (work as I100, during U20, δ≤0.8mm then; Work as I80, during U19, δ≤0.5mm) then; Impose CO
2Gas shielded arc welding, welding job press cold welding of cast iron main points-weak point section, interrupted, disperse weldering, less electric current fusion penetration shallow, every section hammering stress-removal, the normalizing pass leading portion is soft.-carry out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102464 CN1012885B (en) | 1987-03-30 | 1987-03-30 | Welding agent and its use for reparing cast-iron part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87102464 CN1012885B (en) | 1987-03-30 | 1987-03-30 | Welding agent and its use for reparing cast-iron part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87102464A CN87102464A (en) | 1988-10-12 |
| CN1012885B true CN1012885B (en) | 1991-06-19 |
Family
ID=4813965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87102464 Expired CN1012885B (en) | 1987-03-30 | 1987-03-30 | Welding agent and its use for reparing cast-iron part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012885B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7878387B2 (en) * | 2009-05-07 | 2011-02-01 | GM Global Technology Operations LLC | Magnetic particle containing material for fastening together parts or substrates |
| CN108788355B (en) * | 2017-04-27 | 2021-05-25 | 河北宇天材料科技有限公司 | Electric field driven soldering method and application of solder |
| CN108480912A (en) * | 2018-05-31 | 2018-09-04 | 广州中船文冲船坞有限公司 | Welding repair method is changed in the digging of ironcasting |
-
1987
- 1987-03-30 CN CN 87102464 patent/CN1012885B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87102464A (en) | 1988-10-12 |
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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 | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |