CN102912184B - Strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze and method for manufacturing same - Google Patents
Strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze and method for manufacturing same Download PDFInfo
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Abstract
Disclosed are a strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze and a method for manufacturing the same. The strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze is characterized by comprising strontium (Sr) (0.012-0.047%), titanium (Ti) (0.028-0.073%), boron (B) (0.006-0.015%) and the balance high-manganese aluminum bronze. The method for manufacturing the strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze includes melting the high-manganese aluminum bronze, and then sequentially adding Al-Sr master alloy and AlTiB master alloy into the melted high-manganese aluminum bronze to obtain a mixture; adding slag removing agents into the mixture after the mixture is completely melted, and feeding high-purity nitrogen to refine the mixture; and finally, pouring the refined mixture into a ladle, allowing the mixture to stand, then removing slag, and casting the mixture to form ingots to obtain the strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze. Compared with conventional high-manganese aluminum bronze, the strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze is fine in structure, the hardness is increased by 26.8% as compared to the conventional high-manganese aluminum bronze, the uniform corrosion rate is reduced by 5.6% when the strontium-titanium-boron composite micro-alloyed high-manganese aluminum bronze is placed in 3.5% NaCl solution, and the friction coefficient is obviously reduced. The high-manganese aluminum bronze meets requirements of high-speed development of fields of propellers of large ships, seawater pumps, valves, seawater desalination equipment and the like of China on high-performance high-manganese aluminum bronze.
Description
Technical field
The present invention relates to a kind of xantal and preparation method thereof, especially a kind of novel high manganic aluminum bronze Alloy And Preparation Method, specifically the high manganic aluminum bronze and preparation method thereof of a kind of strontium, titanium and boron combined microalloying.
Background technology
High manganic aluminum bronze is on the basis of conventional aluminium bronze, adds manganese element and the class alloy formed.This alloy has excellent mechanical property, anti-high speed seawater scouring performance and Seawater durability, its casting welding property is also better than other xantal, is one of material of main part manufacturing marine large ship water screw, sea-water pump, offshore oil platform, seawater pipe etc.
As everyone knows, alloying and microalloying are the effective means improving alloy structure and performance.From composition (copper (Cu) 70 ~ 80%, manganese (Mn) 8.0 ~ 20.0%, the aluminium (Al) 6.5 ~ 9.0% of high manganic aluminum bronze, iron (Fe) 2.0 ~ 5.0%, nickel (Ni) 1.5 ~ 3.0%, zinc (Zn) 6.0%, surplus is impurity element), this alloy not yet carries out microalloying.Titanium (Ti) and boron (B) element are combined and are joined in McGill metals, not only form TiB
2, the high-melting-point thing phase such as TiAl, Heterogeneous Nucleation effect is played to the follow-up copper alloy solidified, refining alloy tissue, and in the process of cooling of Ti element after alloy graining, forms sosoloid and intermetallic compound (g is equal) with Cu, reinforced alloys.Strontium (Sr) is a kind of active element, and solid solubility in high manganic aluminum bronze is minimum.In xantal, add micro strontium (Sr) effectively to purify melt, improve the distributing homogeneity of element, in addition the scaling loss of titanium (Ti), boron (B) is played a protective role.
Up to the present, China not yet has a kind of high manganic aluminum bronze of strontium, titanium and the boron combined microalloying with independent intellectual property right available, and this constrains the high speed development of the industrial equipmentss such as Chinese large-sized ship propeller, sea-water pump, valve, sea water desalting equipment to a certain extent.
Summary of the invention
The object of the invention is on the basis of high manganic aluminum bronze main component, by adding micro strontium, titanium and boron, inventing a kind of high performance high manganic aluminum bronze and preparation method thereof.
One of technical scheme of the present invention is:
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, is characterized in that it comprises:
Strontium (Sr), mass percent is 0.012 ~ 0.047%;
Titanium (Ti), mass percent is 0.028 ~ 0.073%;
Boron (B), mass percent is 0.006 ~ 0.015%;
High manganic aluminum bronze, surplus;
The mass percent sum of each component is 100%.
Described high manganic aluminum bronze forms primarily of copper (Cu), manganese (Mn), aluminium (Al), iron (Fe), nickel (Ni) and zinc (Zn), wherein, the mass percent of manganese (Mn) is 8.0 ~ 20%, the mass percent of aluminium (Al) is 6.5 ~ 9.0%, the mass percent of iron (Fe) is 2.0 ~ 5.0%, the mass percent of nickel (Ni) is 1.5 ~ 3.0%, and the mass percent of zinc (Zn) is 6%.
Two of technical scheme of the present invention is:
A preparation method for the high manganic aluminum bronze of strontium, titanium and boron combined microalloying, is characterized in that:
First, after high manganic aluminum bronze is melted, add Al-Sr master alloy and AlTiB master alloy successively, must add by listed order in adding procedure, after namely must waiting front a kind of master alloy fusing, add rear a kind of master alloy again; Secondly, after all melting, add into the agent of Cheongju slag (removing impurity), then pass into high pure nitrogen refining; Finally, pour casting ladle into, remove the gred and be cast into ingot after leaving standstill; The high manganic aluminum bronze of strontium, titanium and boron combined microalloying can be obtained
In described Al-Sr master alloy, strontium (Sr) mass percent is that the mass percent of titanium (Ti) in 8.901% ~ 10.879%, AlTiB master alloy is 4.509% ~ 5.511%, the mass percent of boron (B) is 0.882% ~ 1.078 %.
In described Al-Sr master alloy, the best in quality per-cent of Sr is that the best in quality per-cent of Ti in 9.89%, Al-Ti-B master alloy is 5.01%, the best in quality per-cent of B is 0.98 %.
The invention has the beneficial effects as follows:
(1) high manganic aluminum bronze of strontium of the present invention, titanium and boron combined microalloying, has the features such as crystal grain is tiny, hardness is high, erosion resistance is good, frictional coefficient is low.As the high manganic aluminum bronze (for embodiment one) of strontium of the present invention, titanium and boron combined microalloying, its hardness (HV) is 215.1HV, improves 26.8% than hardness (for the comparative example one) high manganic aluminum bronze of routine; For another example, by GB GB 10124-88(uniform corrosion test method), it is 20 DEG C in 3.5% NaCl(test temperature) uniform corrosion rate in solution is 0.02335mm/a, than the uniform corrosion rate 0.02474mm/a(of conventional high manganic aluminum bronze for comparative example one) reduce 5.62%;
(2) high manganic aluminum bronze of strontium of the present invention, titanium and boron combined microalloying, on high-frequency reciprocating friction wear testing machine, (frequency 20Hz, load 1N, time 10min, stroke 0.8 ~ 1 mm, friction pair part is the Si of diameter 4 mm
3n
4ball), the frictional coefficient (for embodiment one) in 3.5%NaCl solution is 0.02245, and reduce 6.45% than conventional high manganic aluminum bronze (for comparative example one) frictional coefficient 0.024, frictional coefficient significantly reduces.
(3) the present invention obtains desirable preparation method by a large amount of tests, especially by adopting the method adding each master alloy in order to control each component content, the high manganic aluminum bronze material of satisfactory microalloying easily can be obtained by technique of the present invention.
(4) the invention discloses the preparation method of the high manganic aluminum bronze of a kind of strontium, titanium and boron combined microalloying, broken the external blockade on new techniques to high-performance high manganic aluminum bronze to a certain extent, Chinese large-sized ship propeller, water pump can be met
,the demand in the fields such as valve, bullet train traction asynchronous motor rotor retaining ring, sea water desalting equipment.
Accompanying drawing explanation
Fig. 1 is the high manganic aluminum bronze metallographic structure of the strontium of the embodiment of the present invention one, titanium and boron combined microalloying.
Fig. 2 is the conventional high manganic aluminum bronze metallographic structure of comparative example one of the present invention.
Embodiment
Below in conjunction with drawings and Examples comparative example, the present invention is further illustrated.
embodiment one
As shown in Figure 1.
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its preparation method:
Example is formulated as by 8.577kg.
First, commercially available or the self-control high manganic aluminum bronze (copper (Cu) 70 ~ 80% by 8.45kg, manganese (Mn) 8.0 ~ 20.0%, aluminium (Al) 6.5 ~ 9.0%, iron (Fe) 2.0 ~ 5.0%, nickel (Ni) 1.5 ~ 3.0%, zinc (Zn) 6.0%, surplus is impurity element) fusing after add 42.7gAl-Sr master alloy (89.85%Al successively, the content of 9.89%Sr(Sr also can float in 8.901% ~ 10.879% scope, lower same), 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 84.3g AlTiB master alloy (93.5%Al, the content of 5.01%Ti(Ti also can float in 4.509% ~ 5.511% scope, lower same), the content of 0.98%B(B can at 0.882% ~ 1.078 %, float in scope, lower same) 0.19%Fe, 0.13%Si) (rate of loss of Ti is about 8%), described master alloy can directly be purchased from the market, also ordinary method can be adopted to prepare voluntarily, rear a kind of master alloy is added again after must waiting front a kind of master alloy fusing in melting process, after whole fusings, to add into the agent of Cheongju slag to remove impurity, then pass into high pure nitrogen refining 3min, finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot, namely the high manganic aluminum bronze of strontium, titanium and boron combined microalloying is obtained.
The high manganic aluminum bronze of the present embodiment through spectrum actual measurement composition is: 11.81% Mn, 8.01 % Al, 3.81% Fe, 1.76% Ni, 0.029% Sr, 0.045% Ti, 0.0095% B, and surplus is copper and a small amount of impurity element.
The high manganic aluminum bronze fine microstructures (Fig. 1) of the present embodiment, its hardness (HV) is 215.1HV, by GB GB 10124-88(uniform corrosion test method), it is 20 DEG C in 3.5% NaCl(test temperature) uniform corrosion rate in solution is 0.02335mm/a, under high-frequency reciprocating friction-wear test condition, with Si
3n
4ball is to when rubbing, and the wet friction coefficient in 3.5%NaCl solution is 0.02245.
embodiment two
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its preparation method:
Example is formulated as by 8.577kg.
First, 37.7gAl-Sr master alloy (89.85%Al is added successively after being melted by 8.455kg high manganic aluminum bronze, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 84.3g AlTiB master alloy (93.5%Al, 5.01%Ti, 0.98%B, 0.19%Fe, 0.13%Si) (rate of loss of Ti is about 8%), described master alloy can directly be purchased from the market, and ordinary method also can be adopted to prepare voluntarily, adds rear a kind of master alloy again after the medium front a kind of master alloy fusing of melting process; After all melting, add into the agent of Cheongju slag (removing impurity), then pass into high pure nitrogen refining 3min; Finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot; Namely the high manganic aluminum bronze of strontium, titanium and boron combined microalloying is obtained.
The high manganic aluminum bronze of the present embodiment through spectrum actual measurement composition is: 11.91% Mn, 8.70 % Al, 3.85% Fe, 1.76 % Ni, 0.045% Ti, 0.026% Sr, 0.0095% B, and surplus is copper and a small amount of impurity element.
Embodiment three.
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its preparation method:
Example is formulated as by 8.577kg.
First, commercially available or the self-control high manganic aluminum bronze (copper (Cu) 70 ~ 80% by 8.476kg, manganese (Mn) 8.0 ~ 20.0%, aluminium (Al) 6.5 ~ 9.0%, iron (Fe) 2.0 ~ 5.0%, nickel (Ni) 1.5 ~ 3.0%, zinc (Zn) 6.0%, surplus is impurity element) fusing after add 17.34gAl-Sr master alloy (89.85%Al successively, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 84.3g AlTiB master alloy (93.5%Al, 5.01%Ti, 0.98%B, 0.19%Fe, 0.13%Si) (rate of loss of Ti is about 8%), described master alloy can directly be purchased from the market, also ordinary method can be adopted to prepare voluntarily, rear a kind of master alloy is added again after must waiting front a kind of master alloy fusing in melting process, after whole fusings, to add into the agent of Cheongju slag to remove impurity, then pass into high pure nitrogen refining 3min, finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot, namely the high manganic aluminum bronze of strontium, titanium and boron combined microalloying is obtained.
The high manganic aluminum bronze of the present embodiment through spectrum actual measurement composition is: 11.81% Mn, 8.01 % Al, 3.81% Fe, 1.76% Ni, 0.012% Sr, 0.045% Ti, 0.0095% B, and surplus is copper and a small amount of impurity element.
Embodiment four.
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its preparation method:
Example is formulated as by 8.577kg.
First, commercially available or the self-control high manganic aluminum bronze (copper (Cu) 70 ~ 80% by 8.42kg, manganese (Mn) 8.0 ~ 20.0%, aluminium (Al) 6.5 ~ 9.0%, iron (Fe) 2.0 ~ 5.0%, nickel (Ni) 1.5 ~ 3.0%, zinc (Zn) 6.0%, surplus is impurity element) fusing after add 67.93gAl-Sr master alloy (89.85%Al successively, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 84.3g AlTiB master alloy (93.5%Al, 5.01%Ti, 0.98%B, 0.19%Fe, 0.13%Si) (rate of loss of Ti is about 8%), described master alloy can directly be purchased from the market, also ordinary method can be adopted to prepare voluntarily, rear a kind of master alloy is added again after must waiting front a kind of master alloy fusing in melting process, after whole fusings, to add into the agent of Cheongju slag to remove impurity, then pass into high pure nitrogen refining 3min, finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot, namely the high manganic aluminum bronze of strontium, titanium and boron combined microalloying is obtained.
The high manganic aluminum bronze of the present embodiment through spectrum actual measurement composition is: 11.81% Mn, 8.01 % Al, 3.81% Fe, 1.76% Ni, 0.047% Sr, 0.045% Ti, 0.0095% B, and surplus is copper and a small amount of impurity element.
Embodiment five.
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its preparation method:
Example is formulated as by 8.577kg.
First, commercially available or the self-control high manganic aluminum bronze (copper (Cu) 70 ~ 80% by 8.48kg, manganese (Mn) 8.0 ~ 20.0%, aluminium (Al) 6.5 ~ 9.0%, iron (Fe) 2.0 ~ 5.0%, nickel (Ni) 1.5 ~ 3.0%, zinc (Zn) 6.0%, surplus is impurity element) fusing after add 42.7gAl-Sr master alloy (89.85%Al successively, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 52.1g AlTiB master alloy (93.5%Al, 5.01%Ti, 0.98%B, 0.19%Fe, 0.13%Si) (rate of loss of Ti is about 8%), described master alloy can directly be purchased from the market, also ordinary method can be adopted to prepare voluntarily, rear a kind of master alloy is added again after must waiting front a kind of master alloy fusing in melting process, after whole fusings, to add into the agent of Cheongju slag to remove impurity, then pass into high pure nitrogen refining 3min, finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot, namely the high manganic aluminum bronze of strontium, titanium and boron combined microalloying is obtained.
The high manganic aluminum bronze of the present embodiment through spectrum actual measurement composition is: 11.81% Mn, 8.01 % Al, 3.81% Fe, 1.76% Ni, 0.029% Sr, 0.028% Ti, 0.006% B, and surplus is copper and a small amount of impurity element.
Embodiment six.
A high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its preparation method:
Example is formulated as by 8.577kg.
First, commercially available or the self-control high manganic aluminum bronze (copper (Cu) 70 ~ 80% by 8.4kg, manganese (Mn) 8.0 ~ 20.0%, aluminium (Al) 6.5 ~ 9.0%, iron (Fe) 2.0 ~ 5.0%, nickel (Ni) 1.5 ~ 3.0%, zinc (Zn) 6.0%, surplus is impurity element) fusing after add 42.7gAl-Sr master alloy (89.85%Al successively, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 40%), 135.8g AlTiB master alloy (93.5%Al, 5.01%Ti, 0.98%B, 0.19%Fe, 0.13%Si) (rate of loss of Ti is about 8%), described master alloy can directly be purchased from the market, also ordinary method can be adopted to prepare voluntarily, rear a kind of master alloy is added again after must waiting front a kind of master alloy fusing in melting process, after whole fusings, to add into the agent of Cheongju slag to remove impurity, then pass into high pure nitrogen refining 3min, finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot, namely the high manganic aluminum bronze of strontium, titanium and boron combined microalloying is obtained.
The high manganic aluminum bronze of the present embodiment through spectrum actual measurement composition is: 11.81% Mn, 8.01 % Al, 3.81% Fe, 1.76% Ni, 0.029% Sr, 0.73% Ti, 0.015% B, and surplus is copper and a small amount of impurity element.
Metallographic structure shows, and the organization and implementatio example of the combined microalloying high manganic aluminum bronze of embodiment two ~ six is close.
comparative example one
As shown in Figure 2.
A kind of conventional high manganic aluminum bronze, prepare by the following method and obtain:
Example is formulated as by 8.09 kg.
First, after 8.09 kg high manganic aluminum bronze fusings, add slag-cleaning agent (removing impurity), then pass into high pure nitrogen refining 3min; Finally, pour casting ladle into, after leaving standstill 1 ~ 5min, remove the gred and be cast into ingot; Namely conventional high manganic aluminum bronze is obtained.
The high manganic aluminum bronze of this comparative example through spectrum actual measurement composition is: 12.05 % Mn, 7.08 % Al, 3.23% Fe, 2.04% Ni, and surplus is copper and a small amount of impurity element.
The high manganic aluminum bronze of this comparative example is organized thick (Fig. 2), its hardness (HV) is 169.65HV, by GB GB 10124-88(uniform corrosion test method), it is 20 DEG C in 3.5% NaCl(test temperature) uniform corrosion rate in solution is 0.02474mm/a, under high-frequency reciprocating friction-wear test condition, with Si
3n
4ball is to when rubbing, and the wet friction coefficient in 3.5%NaCl solution is 0.024.
Below proportioning and the manufacture method of the high manganic aluminum bronze of several common strontium, titanium and boron combined microalloying is only listed, those skilled in the art can according to above-described embodiment, suitably adjust the proportioning of each component and strictly manufacture by above-mentioned steps, the high manganic aluminum bronze of desirable strontium, titanium and boron combined microalloying can be obtained.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (2)
1. a high manganic aluminum bronze for strontium, titanium and boron combined microalloying, its employing following steps of its feature are prepared and obtain:
First, after high manganic aluminum bronze is melted, add Al-Sr master alloy and AlTiB master alloy successively, must add by listed order in adding procedure, after namely must waiting front a kind of master alloy fusing, add rear a kind of master alloy again; In described Al-Sr master alloy, strontium (Sr) mass percent is that the mass percent of titanium (Ti) in 8.901% ~ 10.879%, AlTiB master alloy is 4.509% ~ 5.511%, the mass percent of boron (B) is 0.882% ~ 1.078 %;
Secondly, after all melting, add slag-cleaning agent to remove impurity, then pass into high pure nitrogen refining;
Finally, pour casting ladle into, remove the gred and be cast into ingot after leaving standstill;
The high manganic aluminum bronze of strontium, titanium and boron combined microalloying can be obtained, wherein: strontium (Sr) mass percent is 0.012 ~ 0.047%; The mass percent of titanium (Ti) is 0.028 ~ 0.073%; The mass percent of boron (B) is 0.006 ~ 0.015%, and surplus is high manganic aluminum bronze, and the mass percent sum of each component is 100%;
Described high manganic aluminum bronze is primarily of copper, manganese, aluminium, iron, nickel and zinc composition, and wherein, the mass percent of manganese is 8.0 ~ 20%, the mass percent of aluminium is 6.5 ~ 9.0%, the mass percent of iron is 2.0 ~ 5.0%, and the mass percent of nickel is 1.5 ~ 3.0%, and the mass percent of zinc is 6%.
2. the high manganic aluminum bronze of strontium according to claim 1, titanium and boron combined microalloying, it is characterized in that the mass percent of strontium (Sr) in described Al-Sr master alloy be the mass percent of Ti in 9.89%, Al-Ti-B master alloy is 5.01%, the mass percent of B is 0.98 %.
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| CN104745861B (en) * | 2015-04-07 | 2017-04-05 | 江苏科技大学 | A kind of preparation method of yorcalnic plastic mould material |
| CN106399728B (en) * | 2016-11-28 | 2018-06-12 | 中国船舶重工集团公司第十二研究所 | The method of smelting of high manganic aluminum bronze alloy |
| CN108707779A (en) * | 2018-06-05 | 2018-10-26 | 镇江金叶螺旋桨有限公司 | A kind of high manganic aluminum bronze alloy propeller |
| CN111850344A (en) * | 2020-07-22 | 2020-10-30 | 镇江金叶螺旋桨有限公司 | High-wear-resistance corrosion-resistance high-manganese aluminum bronze alloy propeller and manufacturing method thereof |
| CN111876628A (en) * | 2020-07-31 | 2020-11-03 | 苏州金仓合金新材料有限公司 | Alloy material for power parts and preparation method thereof |
| CN113462926B (en) * | 2021-06-30 | 2023-06-09 | 太原工业学院 | High-strength wear-resistant high-lead tin bronze material and preparation method thereof |
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