CN107699754A - A kind of aluminium alloy bars bat of high fatigue resistance and preparation method thereof - Google Patents
A kind of aluminium alloy bars bat of high fatigue resistance and preparation method thereof Download PDFInfo
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- CN107699754A CN107699754A CN201710769577.2A CN201710769577A CN107699754A CN 107699754 A CN107699754 A CN 107699754A CN 201710769577 A CN201710769577 A CN 201710769577A CN 107699754 A CN107699754 A CN 107699754A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
- A63B59/50—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball
- A63B59/51—Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball made of metal
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
Abstract
The invention discloses aluminium alloy bars bat of a kind of high fatigue resistance and preparation method thereof, it is related to technical field of aluminum alloy technology, its constituent includes by weight percentage：Si 0.12 0.18%, Fe 0.5 0.7%, Cu 0.12 0.24%, Mn 0.05 0.13%, Mg 1.4 1.8%, Cr 0.01 0.03%, Zn 4.5 5.7%, Ti 0.05 0.07%, Li 0.05 0.08%, Y 0.12 0.18%, Mo 0.12 0.18%, surplus Al.Reasonably optimizing each element and its content of the present invention, suppress the appearance of brittlement phase, and crystal grain thinning, toughness and corrosion stability are improved, so as to obtain excellent comprehensive mechanical performance；Melting and Technology for Heating Processing are optimized, intermediate alloy segmentation is melted, add the relatively low metal simple-substance of fusing point, avoid the excessive scaling loss of various elements in alloy, obtain the good melt of high quality, physicochemical property, casting after solid solution, Ageing Treatment eliminates internal stress, has good mechanical performance and endurance damaging, can crack or deform after avoiding long-term use.
Description
Technical field
The present invention relates to the aluminium alloy bars bat and its system of technical field of aluminum alloy technology, more particularly to a kind of high fatigue resistance
Preparation Method.
Background technology
As flourishing for sports, baseball are strong with its craftsmenship height, excitant as a kind of sports item
The features such as attract numerous fans.In baseball, baseball bat hits away high speed ball for confession user
Instrument, therefore, good baseball bat must possess the advantages that strong, the elastic good and damping capaicty of light weight, rigidity is good, and baseball bat
Surface also allows for bearing the enormous impact strength of high speed spheroid moment.
At present, baseball bat used in baseball common are wood based baseball bat, aluminum baseball bat and composite stick
Bat.Wherein, aluminum baseball bat is generally hollow structure, for wood based baseball bat, its lighter in weight, and its equalization point
Also it is more satisfactory, therefore performance of batting is preferable, meanwhile, aluminum baseball bat is more durable in use, therefore this baseball bat accounts for market part
Volume is more than 70%.High-quality aluminium alloy bars bat needs to have certain hardness and intensity bears the impact of ball that flies out, also
With good toughness, the impulsive force to human body is reduced.However, the aluminium bar of existing commercial aluminum alloy material processing often intensity
The requirement of baseball can not be met with toughness, can crack or deform after long-term use of, endurance is damaging poor.This
Outside, compared to wooden bats, burn out rate is higher in production for aluminium alloy bars bat, causes production cost height.Therefore, height is being pursued
More to focus on the overall lifting of material combination property on the basis of intensity, i.e., it is further while aluminum alloy machinery intensity is improved
The antifatigue damage performance of aluminium alloy is improved, controls burn out rate, so as to extend the service life of aluminium alloy and expand aluminium alloy
Application.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of aluminium alloy bars bat of high fatigue resistance
And preparation method thereof.
A kind of aluminium alloy bars bat of high fatigue resistance proposed by the present invention, its constituent are wrapped by weight percentage
Include：Si 0.12-0.18%, Fe 0.5-0.7%, Cu 0.12-0.24%, Mn 0.05-0.13%, Mg 1.4-1.8%, Cr
0.01-0.03%, Zn 4.5-5.7%, Ti 0.05-0.07%, Li 0.05-0.08%, Y 0.12-0.18%, Mo 0.12-
0.18%, surplus Al.
Preferably, " the relational expression of 0.6%≤Mo × Mg/Fe+Y × Zn/Mg≤1.0% " is met.
Preferably, its constituent includes by weight percentage：Si 0.14-0.18%, Fe 0.56-0.62%, Cu
0.15-0.20%, Mn 0.05-0.08%, Mg 1.5-1.7%, Cr 0.01-0.02%, Zn 4.9-5.3%, Ti 0.05-
0.06%th, Li 0.06-0.07%, Y 0.14-0.16%, Mo 0.13-0.16%, surplus Al.
The present invention also proposes a kind of preparation method of the aluminium alloy bars bat of above-mentioned high fatigue resistance, and step is as follows：
S1, melting：Dispensing is carried out by constituent, corner aluminium scrap material, metallic silicon and molybdenum block are mated formation in melting furnace bottom,
Mat formation successively again aluminium ingot, ferro-aluminum intermediate alloy, aluminium manganese intermediate alloy, aluminium chromium hardener, aluminium titanium intermediate alloy, close among aluminium yttrium
Gold, it is warming up to 700-710 DEG C with 160 DEG C/h average speed and is melted, when melting to semisolid, with is averaged for 140 DEG C/h
Speed is warming up to 730-740 DEG C, and after furnace chargeization is flat, 710-720 DEG C is at the uniform velocity cooled to 140 DEG C/h speed, with bell jar by gold
Category lithium, zinc ingot metal, copper coin, MAG block are pressed into aluminium liquid successively, after furnace charge all melts, are at the uniform velocity heated up with 160 DEG C/h speed
To 730-740 DEG C, stir melt and skim, refining is skimmed, and controls each slag-removing time in 10min, stands insulation 15-
25min, alloy melt is obtained, be poured into metal type dies, molded after alloy melt solidification, and casting is air-cooled to room temperature；
S2, solid solution：Casting in step S1 is placed in holding furnace, 460 DEG C are warming up to 100 DEG C/h average speed,
20-40min is incubated, then 470 DEG C are at the uniform velocity warming up to 70 DEG C/h speed, is incubated 20-40min, then it is even with 50 DEG C/h speed
Speed is warming up to 480 DEG C, is incubated 1-2h, is transferred in glowing furnace, water cooling to room temperature；
S3, timeliness：Casting in S2 is removed into surface water drops after placing 20-30min in atmosphere at room temperature, is transferred to
It is pre-heated in 90-100 DEG C of holding furnace, 180-190 DEG C is at the uniform velocity warming up to 40 DEG C/h speed, is incubated 3-5h, it is cold with stove
But to 120-130 DEG C, come out of the stove and be air-cooled to room temperature.
Preferably, in the S1, the smelting furnace is preheated to 240-300 DEG C.
Preferably, in the S1,700-710 DEG C is warming up to 160 DEG C/h average speed, with the rise of temperature, heating
Speed increases, and temperature and time is in tan relation；Preferably, 730-740 is warming up to 140 DEG C/h average speed
DEG C, with the rise of temperature, programming rate increase, and temperature and time is in SIN function relation.
Preferably, in the S1, melt is frozen into casting under vibrating conditions.
Preferably, the vibration frequency is 100-140Hz.
Preferably, in the S2,460 DEG C are warming up to 100 DEG C/h average speed, with the rise of temperature, programming rate
Increase, and temperature and time is in SIN function relation.
Preferably, in the S2, water temperature is 30-40 DEG C in glowing furnace.
Compared with prior art, beneficial effects of the present invention are withdrawn deposit in the following aspects：
1st, alloying component and content are optimized, with the addition of the trace elements such as Li, Y, Mo, and according to Mo, Y of addition
Element, have adjusted the content of the elements such as Zn, Fe, Mg, Cu, meet " the relation of 0.6%≤Mo × Mg/Fe+Y × Zn/Mg≤1.0% "
Formula, so as to suppress the appearance of brittlement phase, and crystal grain thinning, toughness and corrosion stability are improved, so as to obtain excellent comprehensive mechanical
Energy.
2nd, melting and Technology for Heating Processing are optimized, select silicon and molybdenum block as raw material, energy after it reacts with aluminium liquid
Be dissolved in well in aluminium liquid, reduce production cost, and by intermediate alloy segmentation melted, and rationally set programming rate and
Every section of smelting temperature, the relatively low metal simple-substance of fusing point is added, so as to avoid temperature from crossing the excessive burning of various elements in high alloy
Damage, obtains the good melt of high quality, physicochemical property, and contrast uses the melting that once adds and heat up in traditional method of smelting to be made
Aluminum alloy materials containing same composition composition, burn out rate of the present invention decline 0.5-1.1%；Using staged heating and per the stage
Held for some time, it can dissolve segregation and the part of compounds being enriched on crystal boundary and dendritic network, improve alloying element
Solid solubility in the base, internal stress is reduced, can crack or deform after avoiding long-term use, improve the damage of its endurance
Property, first furnace cooling air cooling again, is capable of the distribution of effective coordination intercrystalline strengthening phase, homogenizes matrix in Ageing Treatment,
Coordinate intensity and toughness.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of aluminium alloy bars bat of high fatigue resistance proposed by the present invention, its constituent are wrapped by weight percentage
Include：Si 0.12%, Fe 0.7%, Cu 0.12%, Mn 0.13%, Mg 1.4%, Cr 0.03%, Zn 4.5%, Ti
0.07%th, Li 0.05%, Y 0.18%, Mo 0.12%, surplus Al.
The preparation method of the aluminium alloy bars bat of high fatigue resistance, step are as follows：
S1, melting：Dispensing is carried out by constituent, corner aluminium scrap material, metallic silicon and molybdenum block are mated formation in melting furnace bottom,
Mat formation successively again aluminium ingot, ferro-aluminum intermediate alloy, aluminium manganese intermediate alloy, aluminium chromium hardener, aluminium titanium intermediate alloy, close among aluminium yttrium
Gold, it is warming up to 700 DEG C with 160 DEG C/h average speed and is melted, when melting to semisolid, with 140 DEG C/h average speed
It is warming up to 730 DEG C, after furnace chargeization is flat, 710 DEG C is at the uniform velocity cooled to 140 DEG C/h speed, with bell jar by lithium metal, zinc ingot metal, copper
Plate, MAG block are pressed into aluminium liquid successively, after furnace charge all melts, are at the uniform velocity warming up to 730 DEG C with 160 DEG C/h speed, stirring
Melt is simultaneously skimmed, and refining is skimmed, and controls each slag-removing time in 10min, is stood insulation 15min, is obtained alloy melt, be poured into
In metal type dies, molded after alloy melt solidification, and casting is air-cooled to room temperature；
S2, solid solution：Casting in step S1 is placed in holding furnace, 460 DEG C are warming up to 100 DEG C/h average speed,
20min is incubated, then 470 DEG C are at the uniform velocity warming up to 70 DEG C/h speed, is incubated 20min, then at the uniform velocity heat up with 50 DEG C/h speed
To 480 DEG C, 1h is incubated, is transferred in glowing furnace, water cooling to room temperature；
S3, timeliness：Casting in S2 is removed into surface water drops after placing 20min in atmosphere at room temperature, is transferred to
It is preheated in 90 DEG C of holding furnace, is at the uniform velocity warming up to 180 DEG C with 40 DEG C/h speed, is incubated 3h, cools to 120 DEG C with the furnace, go out
Stove is air-cooled to room temperature.
Embodiment 2
A kind of aluminium alloy bars bat of high fatigue resistance proposed by the present invention, its constituent are wrapped by weight percentage
Include：Si 0.16%, Fe 0.55%, Cu 0.22%, Mn 0.09%, Mg 1.6%, Cr 0.02%, Zn 4.8%, Ti
0.05%th, Li 0.06%, Y 0.17%, Mo 0.15%, surplus Al.
The preparation method of the aluminium alloy bars bat of high fatigue resistance, step are as follows：
S1, melting：Dispensing is carried out by constituent, corner aluminium scrap material, metallic silicon and molybdenum block are mated formation and are being pre-heated to
240-300 DEG C of melting furnace bottom, then aluminium ingot of mating formation successively, ferro-aluminum intermediate alloy, aluminium manganese intermediate alloy, aluminium chromium hardener, aluminium
Titanium intermediate alloy, aluminium yttrium intermediate alloy, it is warming up to 700 DEG C with 160 DEG C/h average speed and is melted, when melts to semisolid
When, 740 DEG C are warming up to 140 DEG C/h average speed, after furnace chargeization is flat, 710 DEG C are at the uniform velocity cooled to 140 DEG C/h speed,
Lithium metal, zinc ingot metal, copper coin, MAG block are pressed into aluminium liquid successively with bell jar, after furnace charge all melts, with 160 DEG C/h speed
Degree is at the uniform velocity warming up to 740 DEG C, stirs melt and skims, and refining is skimmed, and controls each slag-removing time in 10min, stands insulation
25min, alloy melt is obtained, be poured into metal type dies, melt is frozen into casting in the case where vibration frequency is 100Hz vibration condition
Part, molded after alloy melt solidification, and casting is air-cooled to room temperature；
Wherein, 700 DEG C are warming up to 160 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature
It is in tan relation with the time；740 DEG C are warming up to 140 DEG C/h average speed, with the rise of temperature, programming rate increases
Greatly, and temperature and time is in SIN function relation；
S2, solid solution：Casting in step S1 is placed in holding furnace, 460 DEG C are warming up to 100 DEG C/h average speed,
20min is incubated, then 470 DEG C are at the uniform velocity warming up to 70 DEG C/h speed, is incubated 40min, then at the uniform velocity heat up with 50 DEG C/h speed
To 480 DEG C, 2h is incubated, is transferred in glowing furnace, water temperature is 30 DEG C, water cooling to room temperature；
Wherein, 460 DEG C are warming up to 100 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature
It is in SIN function relation with the time；
S3, timeliness：Casting in S2 is removed into surface water drops after placing 20min in atmosphere at room temperature, is transferred to
It is preheated in 90 DEG C of holding furnace, is at the uniform velocity warming up to 190 DEG C with 40 DEG C/h speed, is incubated 4h, cools to 120 DEG C with the furnace, go out
Stove is air-cooled to room temperature.
Embodiment 3
A kind of aluminium alloy bars bat of high fatigue resistance proposed by the present invention, its constituent are wrapped by weight percentage
Include：Si 0.15%, Fe 0.6%, Cu 0.17%, Mn 0.07%, Mg 1.65%, Cr 0.01%, Zn 5.2%, Ti
0.055%th, Li 0.065%, Y 0.15%, Mo 0.14%, surplus Al.
The preparation method of the aluminium alloy bars bat of high fatigue resistance, step are as follows：
S1, melting：Dispensing is carried out by constituent, corner aluminium scrap material, metallic silicon and molybdenum block are mated formation and are being pre-heated to 260
Closed among DEG C melting furnace bottom, then aluminium ingot of mating formation successively, ferro-aluminum intermediate alloy, aluminium manganese intermediate alloy, aluminium chromium hardener, aluminium titanium
Gold, aluminium yttrium intermediate alloy, are warming up to 705 DEG C with 160 DEG C/h average speed and are melted, when melting to semisolid, with 140
DEG C/h average speed is warming up to 735 DEG C, and after furnace chargeization is flat, 715 DEG C are at the uniform velocity cooled to 140 DEG C/h speed, will with bell jar
Lithium metal, zinc ingot metal, copper coin, MAG block are pressed into aluminium liquid successively, after furnace charge all melts, are at the uniform velocity risen with 160 DEG C/h speed
Temperature stirs melt and skimmed to 735 DEG C, and refining is skimmed, and controls each slag-removing time in 10min, stands insulation 20min, obtains
Alloy melt, it is poured into metal type dies, melt is frozen into casting in the case where vibration frequency is 100Hz vibration condition, waits to close
Molded after golden melt solidification, and casting is air-cooled to room temperature；
Wherein, 705 DEG C are warming up to 160 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature
It is in tan relation with the time；735 DEG C are warming up to 140 DEG C/h average speed, with the rise of temperature, programming rate increases
Greatly, and temperature and time is in SIN function relation；
S2, solid solution：Casting in step S1 is placed in holding furnace, 460 DEG C are warming up to 100 DEG C/h average speed,
30min is incubated, then 470 DEG C are at the uniform velocity warming up to 70 DEG C/h speed, is incubated 30min, then at the uniform velocity heat up with 50 DEG C/h speed
To 480 DEG C, 1.5h is incubated, is transferred in glowing furnace, water cooling to room temperature；
Wherein, 460 DEG C are warming up to 100 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature
It is in SIN function relation with the time；
S3, timeliness：Casting in S2 is removed into surface water drops after placing 25min in atmosphere at room temperature, is transferred to
It is preheated in 95 DEG C of holding furnace, is at the uniform velocity warming up to 185 DEG C with 40 DEG C/h speed, is incubated 4h, cools to 125 DEG C with the furnace, go out
Stove is air-cooled to room temperature.
Embodiment 4
A kind of aluminium alloy bars bat of high fatigue resistance proposed by the present invention, its constituent are wrapped by weight percentage
Include：Si 0.18%, Fe 0.5%, Cu 0.24%, Mn 0.05%, Mg 1.8%, Cr 0.01%, Zn 5.7%, Ti
0.05%th, Li 0.08%, Y 0.12%, Mo 0.18%, surplus Al.
The preparation method of the aluminium alloy bars bat of high fatigue resistance, step are as follows：
S1, melting：Dispensing is carried out by constituent, corner aluminium scrap material, metallic silicon and molybdenum block are mated formation and are being pre-heated to 300
Closed among DEG C melting furnace bottom, then aluminium ingot of mating formation successively, ferro-aluminum intermediate alloy, aluminium manganese intermediate alloy, aluminium chromium hardener, aluminium titanium
Gold, aluminium yttrium intermediate alloy, are warming up to 710 DEG C with 160 DEG C/h average speed and are melted, when melting to semisolid, with 140
DEG C/h average speed is warming up to 740 DEG C, and after furnace chargeization is flat, 720 DEG C are at the uniform velocity cooled to 140 DEG C/h speed, will with bell jar
Lithium metal, zinc ingot metal, copper coin, MAG block are pressed into aluminium liquid successively, after furnace charge all melts, are at the uniform velocity risen with 160 DEG C/h speed
Temperature stirs melt and skimmed to 740 DEG C, and refining is skimmed, and controls each slag-removing time in 10min, stands insulation 25min, obtains
Alloy melt, it is poured into metal type dies, melt is frozen into casting in the case where vibration frequency is 120Hz vibration condition, waits to close
Molded after golden melt solidification, and casting is air-cooled to room temperature；
Wherein, 710 DEG C are warming up to 160 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature
It is in tan relation with the time；740 DEG C are warming up to 140 DEG C/h average speed, with the rise of temperature, programming rate increases
Greatly, and temperature and time is in SIN function relation；
S2, solid solution：Casting in step S1 is placed in holding furnace, 460 DEG C are warming up to 100 DEG C/h average speed,
40min is incubated, then 470 DEG C are at the uniform velocity warming up to 70 DEG C/h speed, is incubated 40min, then at the uniform velocity heat up with 50 DEG C/h speed
To 480 DEG C, 2h is incubated, is transferred in glowing furnace, water temperature is 40 DEG C, water cooling to room temperature；
Wherein, 460 DEG C are warming up to 100 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature
It is in SIN function relation with the time；
S3, timeliness：Casting in S2 is removed into surface water drops after placing 30min in atmosphere at room temperature, is transferred to
It is preheated in 100 DEG C of holding furnace, is at the uniform velocity warming up to 190 DEG C with 40 DEG C/h speed, is incubated 5h, cools to 130 DEG C with the furnace, go out
Stove is air-cooled to room temperature.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. the aluminium alloy bars bat of a kind of high fatigue resistance, it is characterised in that its constituent includes by weight percentage：Si
0.12-0.18%, Fe 0.5-0.7%, Cu 0.12-0.24%, Mn 0.05-0.13%, Mg 1.4-1.8%, Cr 0.01-
0.03%th, Zn 4.5-5.7%, Ti 0.05-0.07%, Li 0.05-0.08%, Y 0.12-0.18%, Mo 0.12-
0.18%, surplus Al.
2. the aluminium alloy bars bat of high fatigue resistance according to claim 1, it is characterised in that meet " 0.6%≤Mo
The relational expression of × Mg/Fe+Y × Zn/Mg≤1.0% ".
3. the aluminium alloy bars bat of high fatigue resistance according to claim 1 or 2, it is characterised in that its constituent
Include by weight percentage：Si 0.14-0.18%, Fe 0.56-0.62%, Cu 0.15-0.20%, Mn 0.05-0.08%,
Mg 1.5-1.7%, Cr 0.01-0.02%, Zn 4.9-5.3%, Ti 0.05-0.06%, Li 0.06-0.07%, Y
0.14-0.16%, Mo 0.13-0.16%, surplus Al.
4. a kind of preparation method of the aluminium alloy bars bat based on any described high fatigue resistances of the claims 1-3,
Characterized in that, step is as follows：
S1, melting：Dispensing is carried out by constituent, corner aluminium scrap material, metallic silicon and molybdenum block are mated formation in melting furnace bottom, then according to
Secondary aluminium ingot of mating formation, ferro-aluminum intermediate alloy, aluminium manganese intermediate alloy, aluminium chromium hardener, aluminium titanium intermediate alloy, aluminium yttrium intermediate alloy,
700-710 DEG C is warming up to 160 DEG C/h average speed to be melted, when melting to semisolid, with 140 DEG C/h average speed
Be warming up to 730-740 DEG C, after furnace chargeization is flat, 710-720 DEG C be at the uniform velocity cooled to 140 DEG C/h speed, with bell jar by lithium metal,
Zinc ingot metal, copper coin, MAG block are pressed into aluminium liquid successively, and after furnace charge all melts, 730- is at the uniform velocity warming up to 160 DEG C/h speed
740 DEG C, stir melt and skim, refining is skimmed, and controls each slag-removing time in 10min, is stood insulation 15-25min, must be closed
Golden melt, is poured into metal type dies, is molded after alloy melt solidification, and casting is air-cooled into room temperature；
S2, solid solution：Casting in step S1 is placed in holding furnace, is warming up to 460 DEG C with 100 DEG C/h average speed, insulation
20-40min, then 470 DEG C are at the uniform velocity warming up to 70 DEG C/h speed, 20-40min is incubated, then at the uniform velocity rise with 50 DEG C/h speed
Temperature is incubated 1-2h, is transferred in glowing furnace, water cooling to room temperature to 480 DEG C；
S3, timeliness：Casting in S2 is removed into surface water drops after placing 20-30min in atmosphere at room temperature, is transferred to pre-
Heat is at the uniform velocity warming up to 180-190 DEG C into 90-100 DEG C of holding furnace, with 40 DEG C/h speed, is incubated 3-5h, cools to the furnace
120-130 DEG C, come out of the stove and be air-cooled to room temperature.
5. the preparation method of the aluminium alloy bars bat of high fatigue resistance according to claim 4, it is characterised in that described
In S1, the smelting furnace is preheated to 240-300 DEG C.
6. the preparation method of the aluminium alloy bars bat of high fatigue resistance according to claim 4, it is characterised in that described
In S1,700-710 DEG C is warming up to 160 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature and when
Between be in tan relation；Preferably, 730-740 DEG C is warming up to 140 DEG C/h average speed, with the rise of temperature, heating
Speed increases, and temperature and time is in SIN function relation.
7. the preparation method of the aluminium alloy bars bat of high fatigue resistance according to claim 4, it is characterised in that described
In S1, melt is frozen into casting under vibrating conditions.
8. the preparation method of the aluminium alloy bars bat of high fatigue resistance according to claim 7, it is characterised in that described
Vibration frequency is 100-140Hz.
9. the preparation method of the aluminium alloy bars bat of high fatigue resistance according to claim 4, it is characterised in that described
In S2,460 DEG C are warming up to 100 DEG C/h average speed, with the rise of temperature, programming rate increase, and temperature and time is in
SIN function relation.
10. the preparation method of the aluminium alloy bars bat of high fatigue resistance according to claim 4, it is characterised in that institute
State in S2, water temperature is 30-40 DEG C in glowing furnace.
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| CN202961752U (en) * | 2013-01-02 | 2013-06-05 | 石盛华 | Aluminum alloy club |
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Application publication date: 20180216 |