CN1049853C - Method for welding alloy cast aluminium part and used welding rod - Google Patents
Method for welding alloy cast aluminium part and used welding rod Download PDFInfo
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- CN1049853C CN1049853C CN96100212A CN96100212A CN1049853C CN 1049853 C CN1049853 C CN 1049853C CN 96100212 A CN96100212 A CN 96100212A CN 96100212 A CN96100212 A CN 96100212A CN 1049853 C CN1049853 C CN 1049853C
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Abstract
The present invention discloses a method for welding alloy cast aluminium components and a welding rod used by the method. Alloy cast aluminium components are divided into different kinds of alloy, such as silicon-aluminium alloy, aluminium-magensium alloy, aluminium-copper copper, aluminium-zinc alloy, etc.; thereby, firstly, the alloy kinds are distinguished, and different kinds of alloy castings use different kinds of welding rods. The welding rod is divided into the aluminium-silicon welding rod, the aluminium-magensium welding rod, the aluminium-copper welding rod and the aluminium-copper welding rod; the four welding rods are different and have the same alloy ingredients of 7 to 13% of silicon, 0.3 to 1% of magnesium, 0.05 to 0.5% of copper, 0.2 to 0.5% of manganese and 85 to 91.5% of aluminium. The welding rod does not have coatings; thereby, any fluxing agent and welding powder are not added during welding, and oxygen-acetylene gases can be directly used for welding aluminium castings with optional thickness and aluminium thin plates. The present invention has the advantages of no coating at the appearance, and flat and smooth welding seam; various indexes can meet national standards.
Description
The present invention relates to the used welding rod of a kind of welding of aluminum silicon alloy parts, belong to welding technology field.
In existing technology, aluminium and aluminium alloy mainly are welded with three kinds of methods promptly: argon arc welding, arc welding and oxygen, acetylene welding.Argon arc welding and the arc welding throat thickness is limited, equipment investment is high needs welding powder to make scaling powder during operation, or uses the aluminium alloy electrode that scribbles coating, produce during welding float, splash, pore and slag inclusion.Welding rod and parent can not well fuse.Though autogenous soldering has small investment, simple operation and other advantages, but the main at present welding wire that uses, welding rod need welding powder to make scaling powder when welding, can only weld thin parts, postwelding is prone to crackle, pore, and can not weld strength, sealing, the aluminium alloy part of having relatively high expectations such as withstand voltage, shock-resistant.Chinese patent literature disclosed " Oxygeng welding rod for cast aluminium " (CN1091344A) in, a kind of Oxygeng welding rod for cast aluminium is disclosed first, its main component is made up of silicon (8-13%), iron (0.4-0.7%), copper (1-1.5%), manganese (0.02-0.05%), magnesium (0.5-1.5%), nickel (0.7-0.9%), aluminium (83-88%) etc., and form by casting after the high temperature melting.Above-mentioned cast aluminium gas-welding rod has played welding cast aluminium part and welding rod need not scaling powder and the effect of welding powder, but in the daily welding assembly that runs into, especially maximum with silico-aluminum, secondly be aluminum bronze and almag, for the silico-aluminum parts, there is following shortcoming in above-mentioned cast aluminium gas-welding rod: 1. the content of manganese is low, and contains ferro element, makes welding rod quality inferior; Contain the ferro element about 0.4-0.7% in the welding rod, ferro element is not to have a mind to add, but from the furnace charge in the cast aluminium production process and smelting furnace, instrument etc., in alusil alloy, iron occurs mutually with β .Fe, β .Fe is mutually hard and crisp, pass α (Al) crystal grain with thick needle shape, weakened matrix widely, reduced alloy mechanical performance, especially percentage elongation and impact, and the etch resistant properties of alloy is reduced.The content of manganese has only 0.02-0.05% in the above-mentioned cast aluminium gas-welding rod, can not eliminate the illeffects of the content 0.4-0.7% of iron to matrix far away, and correct ratio should be: Mn: Fe=(0.67～0.83): effect was best in 1 o'clock; 2. magnesium, copper content height, in the component of above-mentioned cast aluminium welding rod, magnesium 0.5-1.5%, copper 1-1.5%, copper in the weld seam of welding back, when content of magnesium is too high, plasticity and toughness and parent composition have big difference, from the commissure fracture, with this welding rod welding silico-aluminum foundry goods quality problems will often take place easily; 3. with above-mentioned a kind of cast aluminium gas-welding rod, removing to weld the mother metal of different components, is the bad prescription with " a kind of medicine is controlled various diseases ".In fact in the alloy aluminum foundry goods different-alloy types such as silico-aluminum, almag, aluminium copper, alumin(i)um zinc alloy are arranged, used welding rod be should have branch other.Therefore it is not right welding different types of alloy component with the welding rod of same prescription.The welding rod of welding aluminium-silicon alloy casting should be different from the welding rod of welding of aluminum magnesium alloy, aluminium copper, alumin(i)um zinc alloy foundry goods.
The objective of the invention is problem, develop the used welding rod of a kind of welding of aluminum silicon alloy parts at above-mentioned existence.
The solution of the present invention is as follows: welding rod should be with approaching as much as possible by the material of weldering mother metal, and the component of this welding rod is:
Silicon 7-13%
Aluminium 85-91.5%
Magnesium 0.3-1.0%
Copper 0.05-0.5%
Manganese 0.2-0.5%
During manufacturing, each component is melted under 750 ° ± 30 ° temperature, go into the die casting moulding.
The welding rod that the present invention is used need not any welding powder during welding, flux, directly welding.Can weld the alusil alloy parts of any thickness.There is not the hydro-planing of splashing during welding.When having changed present gas welding different-alloy cast aluminium part, with the unreasonable state of " a kind of medicine is controlled various diseases ".The present invention is specially in order to welding of aluminum silicon alloy parts, and wherein the ratio of silicon is at 7-13%, because of the material welding.Also contain manganese in the welding rod, because harmful ferro element has inevitably been sneaked in casting during welding rod, the purpose that adds manganese is to make thick β Fe be phase-changed into the Al-Si-Mn-Fe phase of diversification, is shaft-like or bulk, thereby has eliminated the illeffects of iron to matrix.The content of copper, magnesium is moderate, and toughness, plasticity, the intensity of weld seam are all significantly improved.Show that through the result of thousands of cast aluminium parts of REPAIR WELDING during the last ten years smooth, the firm and durable of smooth welded seam, its welding quality reach and surpass the intensity and the performance of mother metal.Tensile strength reaches 150MPa, and every index meets national standard.
Below by embodiment the present invention is illustrated:
Most preferred embodiment 1 (differentiation of silico-aluminum foundry goods and used welding rod):
Aluminium 87.96%
Magnesium 0.4%
Copper 0.2%
Silicon 11.1%
Manganese 0.34%
According to the alusil alloy smelting technology,, go into die casting and form during manufacturing by than each component being heated to 750 ± 30 ℃.
Claims (1)
1. used welding rod of welding of aluminum silicon alloy parts is characterized in that component and content thereof are:
Silicon 7-13%
Aluminium 85-91.5%
Magnesium 0.3-1.0%
Copper 0.05-0.5%
Manganese 0.2-0.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96100212A CN1049853C (en) | 1996-05-02 | 1996-05-02 | Method for welding alloy cast aluminium part and used welding rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96100212A CN1049853C (en) | 1996-05-02 | 1996-05-02 | Method for welding alloy cast aluminium part and used welding rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1143553A CN1143553A (en) | 1997-02-26 |
| CN1049853C true CN1049853C (en) | 2000-03-01 |
Family
ID=5116494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96100212A Expired - Fee Related CN1049853C (en) | 1996-05-02 | 1996-05-02 | Method for welding alloy cast aluminium part and used welding rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049853C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436326B (en) * | 2018-03-19 | 2020-07-24 | 南昌航空大学 | Preparation method of aluminum-silicon alloy welding rod for brazing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2807541A (en) * | 1954-07-09 | 1957-09-24 | Nat Res Dev | Welding aluminium alloys |
| US2812419A (en) * | 1955-09-29 | 1957-11-05 | Smith Corp A O | Welding procedure for joining aluminum plates |
| CN1091344A (en) * | 1993-12-20 | 1994-08-31 | 王克礼 | Oxygeng welding rod for cast aluminium |
-
1996
- 1996-05-02 CN CN96100212A patent/CN1049853C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2807541A (en) * | 1954-07-09 | 1957-09-24 | Nat Res Dev | Welding aluminium alloys |
| US2812419A (en) * | 1955-09-29 | 1957-11-05 | Smith Corp A O | Welding procedure for joining aluminum plates |
| CN1091344A (en) * | 1993-12-20 | 1994-08-31 | 王克礼 | Oxygeng welding rod for cast aluminium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1143553A (en) | 1997-02-26 |
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