A kind of anti-surrender aluminium alloy car sheet material
Technical field
The present invention relates to field of aluminum alloys, be exactly a kind of anti-surrender aluminium alloy car sheet material.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structural material in industry, widely applies in Aeronautics and Astronautics, automobile, machine-building, boats and ships and chemical industry.
Cast aluminium alloy gold utensil has excellent casting character.Suitable alloy and suitable casting method can be selected according to the requirement of each side such as application target, part shape, dimensional accuracy, quantity, quality standard, mechanical performance and economic benefit.Cast aluminium alloy gold is mainly used in the non-engine components such as casting engine cylinder block, clutch housing, rear axle housing, steering gear housing, variator, valve actuating mechanism, lubricating oil pump, water pump, rocker arm cover, wheel, engine frame, caliper, oil cylinder and braking dish.
Summary of the invention
It is an object of the invention to provide a kind of anti-surrender aluminium alloy car sheet material.
Above-mentioned purpose is realized by below scheme:
A kind of anti-surrender aluminium alloy car sheet material, it is characterized in that: its each element consists of by mass percentage: Ti0.05-0.1, Ge0.1-0.2, Cr0.05-0.08, W0.14-0.16, Er0.06-0.12, Mg0.4-0.6, Sr0.015-0.025, Ta0.01-0.02, Mo0.06-0.12, Co0.05-0.15, surplus is Al and impurity.
The anti-surrender aluminium alloy car sheet material of described one, it is characterised in that: casting technique is:
(1), mass percent described in claim 1 takes a certain amount of each simple metal ingot, by demagging ingot, a certain amount of simple metal ingot melting at the temperature of 850-950 DEG C outside molybdenum ingot is aluminum alloy melt, high-temperature alloy steel two-blade stirrer is adopted to stir 10 minutes with the speed of 30-50 rev/min, after stirring terminates, obtain the molten metal after melting, again the molten metal after melting is proportionally added into refining agent in 800 DEG C of holding furnaces, high-temperature alloy steel two-blade stirrer is adopted to stir 8-15 minute with the speed of 25-35 rev/min, stirring is warming up to 850 DEG C and stands insulation 10-20 minute after terminating, skim, sample analysis after skimming, after melt qualified for composition is poured in powder by gas-atomization equipment, adopt gas atomization method that proportioning material is prepared into particle diameter alloyed spherical powder below 100 μm, obtain alloy powder;
(2) mass percent described in claim 1 takes the melting at the temperature of 800-900 DEG C of a certain amount of magnesium ingot, molybdenum ingot is aluminium alloy, melt pours in powder by gas-atomization equipment, adopt gas atomization method that proportioning material is prepared into particle diameter alloyed spherical powder below 100 μm, obtain magnesium molybdenum alloy powder;
(3) after step (1) gained alloy powder being mixed with step (2) gained magnesium molybdenum alloy powder mass percent described in claim 1, at the temperature of 850-950 DEG C, melting is aluminum alloy melt, again the molten metal after melting is proportionally added into refining agent in 800 DEG C of holding furnaces, carry out second time refine, high-temperature alloy steel two-blade stirrer is adopted to stir 8-15 minute with the speed of 25-35 rev/min, stirring is warming up to 850 DEG C and stands insulation 10-20 minute after terminating, skim, sample analysis after skimming;
(4) after qualified for composition melt is covered standing, after 390~410 DEG C of preheatings 3~5 hours, then it is warming up to 440-450 DEG C and preheats 1-2 hour, then be warming up to 500-550 DEG C and preheat 1-2 hour, then cool to 350-380 DEG C, after being incubated 5-6 hour, roll forming;
(5) after, having rolled, 520~530 DEG C of salt baths process 20~40 minutes;
(6), after aluminum alloy plate materials recrystallization annealing after described salt bath processes, to obtain final product.
The anti-surrender aluminium alloy car sheet material of described one, it is characterised in that: described refining agent is prepared by the raw material of following weight parts: sodium sulfate 5-10, calcium fluoride 2-4, potassium carbonate 1-2, potassium nitrate 1-2, prodan 3-6, celestite powder 5-8;
The preparation method of described refining agent is:
(1) after celestite powder being steeped 20-30 minute while stirring in the hydrogen peroxide that concentration is 10-15%, refilter, clean with deionized water, dry, grind to form sub-micron powder;
(2) except celestite powder after all the other raw material blendings, will pulverize and add step (1) gained sub-micron powder, after stirring, to obtain final product.
The invention have the benefit that the present invention is after multiple preheating and overaging, salt bath process, has good anti-yield behavior.
Detailed description of the invention
A kind of anti-surrender aluminium alloy car sheet material, its each element consists of by mass percentage: Ti0.05, Ge0.2, Cr0.08, W0.16, Er0.12, Mg0.4, Sr0.015, Ta0.02, Mo0.12, Co0.15, and surplus is Al and impurity.
The anti-surrender aluminium alloy car sheet material of described one, casting technique is:
(1), mass percent described in claim 1 takes a certain amount of each simple metal ingot, by demagging ingot, the melting at the temperature of 950 DEG C of a certain amount of simple metal ingot outside molybdenum ingot is aluminum alloy melt, high-temperature alloy steel two-blade stirrer is adopted to stir 10 minutes with the speed of 50 revs/min, after stirring terminates, obtain the molten metal after melting, again the molten metal after melting is proportionally added into refining agent in 800 DEG C of holding furnaces, high-temperature alloy steel two-blade stirrer is adopted to stir 15 minutes with the speed of 35 revs/min, stirring is warming up to 850 DEG C and stands insulation 20 minutes after terminating, skim, sample analysis after skimming, after melt qualified for composition is poured in powder by gas-atomization equipment, adopt gas atomization method that proportioning material is prepared into particle diameter alloyed spherical powder below 100 μm, obtain alloy powder;
(2) mass percent described in claim 1 takes the melting at the temperature of 900 DEG C of a certain amount of magnesium ingot, molybdenum ingot is aluminium alloy, melt pours in powder by gas-atomization equipment, adopt gas atomization method that proportioning material is prepared into particle diameter alloyed spherical powder below 100 μm, obtain magnesium molybdenum alloy powder;
(3) after step (1) gained alloy powder being mixed with step (2) gained magnesium molybdenum alloy powder mass percent described in claim 1, at the temperature of 850 DEG C, melting is aluminum alloy melt, again the molten metal after melting is proportionally added into refining agent in 800 DEG C of holding furnaces, carry out second time refine, high-temperature alloy steel two-blade stirrer is adopted to stir 15 minutes with the speed of 35 revs/min, stirring is warming up to 850 DEG C and stands insulation 20 minutes after terminating, skim, sample analysis after skimming;
(4) after qualified for composition melt is covered standing, after 390 DEG C of preheatings 5 hours, then it is warming up to 450 DEG C and preheats 2 hours, then be warming up to 550 DEG C and preheat 2 hours, then cool to 380 DEG C, after being incubated 6 hours, roll forming;
(5), rolled rear 530 DEG C of salt baths to process 40 minutes;
(6), after aluminum alloy plate materials recrystallization annealing after described salt bath processes, to obtain final product.
Described refining agent is prepared by the raw material of following weight kg: sodium sulfate 10, calcium fluoride 4, potassium carbonate 2, potassium nitrate 1, prodan 6, celestite powder 8;
The preparation method of described refining agent is:
(1) after celestite powder being steeped 30 minutes while stirring in the hydrogen peroxide that concentration is 15%, refilter, clean with deionized water, dry, grind to form sub-micron powder;
(2) except celestite powder after all the other raw material blendings, will pulverize and add step (1) gained sub-micron powder, after stirring, to obtain final product.
The aluminium alloy prepared is through inspection, and its main performance is: tensile strength 445Mpa, shearing strength 265MPa, elongation percentage 14.6%.