CN1012180B - Agent for aluminium-siliconalloge modification refinement - Google Patents
Agent for aluminium-siliconalloge modification refinementInfo
- Publication number
- CN1012180B CN1012180B CN 86105179 CN86105179A CN1012180B CN 1012180 B CN1012180 B CN 1012180B CN 86105179 CN86105179 CN 86105179 CN 86105179 A CN86105179 A CN 86105179A CN 1012180 B CN1012180 B CN 1012180B
- Authority
- CN
- China
- Prior art keywords
- agent
- alloy
- refinement
- aluminium
- modification
- 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
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Abstract
The present invention relates to an agent for Al-Si alloy modification and refinement, which is used for modifying and refining molten Al-Si alloys. The agent comprises 20 to 40% of NaCl, 40 to 60% of NaF, 5 to 15% of Na3AlF6, 5 to 15% of NaSiF6 or 20 to 30% of NaCl, 45 to 65% of NaF and 15 to 25% of Na2SiF6. Two steps of modification and refinement can be reduced to one step by using the agent for modification and refinement. The pinhole degree of the obtained alloy is less than grade 1.
Description
A kind of metamorphic alloy refining agent.Be mainly used in the melting of aluminum silicon alloy, also can be used for the melting of ZQA19-4 bronze.
Existing rotten, refining agent, " the nontoxic alterant " that " the handling the omnipotent flux of aluminium alloy " described in russian patent application SU-834178 and China shoal flux factory produce etc.Though these flux have played certain rotten and refining effect, performance is stable inadequately, and degassing effect is undesirable, the requirement that makes the pinhole rate of foundry goods not reach the high quality alloy.
The objective of the invention is to develop a kind of inoculating and refining agent rotten, that one step of refining carries out that makes, simplify technology to reach, enhance productivity.Simultaneously guarantee that again degassing effect is good, can improve the performance of aluminum silicon alloy widely, and efficient agent for aluminium-siliconalloge modification refinement free from environmental pollution, that price is low.
For this reason, the present invention has selected following two assembly sides:
（1）NaCl????20-41%
NaF????40-60%
Na
3AlF
65-15%
Na
2SiF
65-15%
（2）NaCl????20-30%
NaF????45-65%
Na
2SiF
615-25%
The manufacture method of this inoculating and refining agent is: in selected ratio prescription above several material are mixed, put into the crucible over hot melting and remove crystal water, be incubated 20～30 minutes then, it is good to cool off post-treatment.
As seen, the composition of this inoculating and refining agent is polynary sodium salt from prescription, and following reaction takes place in the fused aluminium alloy sodium salt, generates the dryness slag.
The sodium that restores enters alloy, play metamorphism, the sodium silicofluoride that adds generates sodium aluminum fluoride with the aluminum oxide reaction alloy is carried out refining in alloy, make rotten like this and refining takes place simultaneously, because in fusion process, aluminum oxide is directly participated in reaction, thereby has shortened smelting time, make the alloying element scaling loss few, simplified operating performance again.Adopt this inoculating and refining agent, furnace charge does not need preheating.Temperature is 720 ℃ thereby to have reduced alloy at high temperature air-breathing during operation, even in intermittent drizzles in the rainy season seasons, indoor relative humidity is up to 94%, the alloy that melting is come out under the situation of average out to 88%, through the low power metallographicinspection, pinhole rate all＜1 grade (space industry ministerial standard).As seen this agent performance is not subjected to the weather condition effect.
Embodiment: according to the inoculating and refining agent of following prescription.
NaCl????20%
NaF????65%
Na
2SiF
615%
Be added to respectively in ZL101, ZL102, ZL104, the ZL111 alloy, the gained alloy property is the row chart as follows.
Fig. 1 is the low power metallograph before the zl102 al-si alloy refinement and denaturation.
Fig. 2, Fig. 2 the-the 1st, and zl102 al-si alloy adds the low power metallograph after 0.5 kilogram of fresh branch melting.
Fig. 3, Fig. 3 the-the 1st, and zl102 al-si alloy adds the low power metallograph after the inoculating and refining agent.
Fig. 4 is the high power 100 * metallograph after zl102 al-si alloy adds 0.5 kilogram of fresh branch melting.
Fig. 5 is a high position 100 * metallograph after zl102 al-si alloy adds the inoculating and refining agent.
From photo as seen, the pinhole rate of the alusil alloy ZL102 that processes through the inoculating and refining agent by＞5 grades become＜1～1 grade. Crystal grain is greatly refinement also. The pinhole rate of ZL 102 alloy and hydrogen content see Table the 1(table and see that literary composition is rear). Wherein, hydrogen content is to survey the hydrogen chromatography with SQH-1 to survey gained before smelting furnace.
Carry out after alloy mechanical performance behind the inoculating and refining sees Table the 2(table and see literary composition through adding this agent). As seen alloy mechanical performance meets the GB1173-74 requirement.
Fig. 6 is the fluidity test low power metallograph of the alusil alloy ZL111 after the agent of this inoculating and refining of adding. Step-thickness is by 10～50mm, and mobile performance is fine as seen from the figure.
After table 3(sees literary composition) be the result that harmful substance is measured in the stokehold when processing alloy with wooden agent.
After table 4(sees literary composition) be the percentage that alusil alloy is allocated magnesium under the different situations.
In addition, aspect expense, during melting equivalent alloy, use the expense of this inoculating and refining agent only to be 78%～58% of alloy refining commonly used, alterant. Energy expenditure also greatly reduces.
Table 1
Adding 0.5 kilogram adds originally rotten
Before the alloy property refinement and denaturation
Fresh branch refining agent
Pinhole rate class 4～5 grade＞5 grades＜1～1 grade
Hydrogen content 0.607ml/100g 0.627ml/100g 0.146ml/100g
Table 2:
Close σ
b(kg/mm
2)
As-heat-treated condition δ (%) HB
Gold trade mark maximum value mean value
ZL101????S、B????19.0????17.6????4～5????＞50
ZL102????S、B????20.0????17.5????7～8????＞50
ZL104????S、B????21.0????18.2????4～5????＞50
T
633 27.1 2～4 ＞70
Table 3:
HCl????HF
Detect
Number of times
Measured quantity state health standards stokehold, state health standards stokehold measured quantity
1 does not detect 0.25(mg/m
3)
15mg/m
31mg/m
3
2 vestiges 0.27
3 do not detect 0.34
4 do not detect 0.25
Claims (3)
1, a kind of agent for aluminium-siliconalloge modification refinement is characterized in that containing:
NaCl????20-41%
NaF?????40-60%
Na
3AlF
65-15%
Na
2SiF
65-15%
2, a kind of agent for aluminium-siliconalloge modification refinement is characterized in that containing:
NaCl??20-30%
NaF??45-65%
Na
2SiF
615-25%
3, claim 1 or 2 agent for aluminium-siliconalloge modification refinement are applied to the melting of aluminum silicon alloy ZL101, ZL102, ZL104, ZL111, also can be applicable to the melting of ZQA19-4 bronze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105179 CN1012180B (en) | 1986-08-16 | 1986-08-16 | Agent for aluminium-siliconalloge modification refinement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86105179 CN1012180B (en) | 1986-08-16 | 1986-08-16 | Agent for aluminium-siliconalloge modification refinement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86105179A CN86105179A (en) | 1988-05-04 |
| CN1012180B true CN1012180B (en) | 1991-03-27 |
Family
ID=4802756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86105179 Expired CN1012180B (en) | 1986-08-16 | 1986-08-16 | Agent for aluminium-siliconalloge modification refinement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012180B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050637C (en) * | 1995-02-11 | 2000-03-22 | 傅立土 | Fluxing agent for melting nonferrous alloy, prepn. method, and application method thereof |
| CN1040775C (en) * | 1995-03-28 | 1998-11-18 | 张鑫珩 | Modified compounded molten solvent for refined Al-Al alloy |
| CN100460535C (en) * | 2006-10-14 | 2009-02-11 | 重庆工学院 | Efficient composite modifying-refining agent for hypoeutectic cast aluminium-silicon alloy and treatment process |
| CN101250636B (en) * | 2008-03-27 | 2010-06-02 | 武汉英立科技研究所 | Nonferrous alloy smelting fusing agent and preparation method |
| CN101343699B (en) * | 2008-09-03 | 2010-06-16 | 营口经济技术开发区金达合金铸造有限公司 | Aluminum-silicon alloy refining agent and preparation thereof |
| CN102644002B (en) * | 2012-05-16 | 2013-09-04 | 山东滨州渤海活塞股份有限公司 | Aluminium alloy solution refined chlorine-free slag remover |
| CN104928506B (en) * | 2015-05-19 | 2017-03-08 | 河北立中有色金属集团有限公司 | A kind of degasification of aluminium liquid melting, slagging-off composite purifying process |
-
1986
- 1986-08-16 CN CN 86105179 patent/CN1012180B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86105179A (en) | 1988-05-04 |
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