CN108130452A - A kind of robot large cover and its preparation process - Google Patents
A kind of robot large cover and its preparation process Download PDFInfo
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- CN108130452A CN108130452A CN201711203053.3A CN201711203053A CN108130452A CN 108130452 A CN108130452 A CN 108130452A CN 201711203053 A CN201711203053 A CN 201711203053A CN 108130452 A CN108130452 A CN 108130452A
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
-
- 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
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- 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
-
- 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
- C22F1/043—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 silicon as the next major constituent
Abstract
The invention discloses a kind of robot large cover and its preparation processes, belong to technical field of metal material.The material composition and percentage composition of large cover be：Fe：0.4 0.8%, Si：0.5 0.7%, Ti：0.02 0.04%, Mg：0.05 0.09%, Be：0.01 0.03%, surplus is Al and impurity.Be in raw material is outstanding metallic addition, and density is small, but intensity is 4 times of steel, utilize the light weight of Be, high intensity, it can not only cause aluminium alloy that there is preferable physical property, enhance the mechanical performance of aluminium alloy, while the impurity oxygen in aluminium alloy is reduced using the oxytropism of Be.Ti chemical property itself is stablized, and eliminates Fe to the crisp harm of the increasing of alloy, while using the preferential coagulating property of Fe, becomes solidifying core, enhance the mechanical property of aluminium alloy.Meanwhile by progressive normalized treatment, homogenizing annealing treatment process come crystal grain thinning, component segregation in alloy is eliminated.And nanoscale carbon film is formed in alloy surface, there is higher intensity, greatly strengthen the corrosion resistance of aluminium alloy.
Description
Technical field
The present invention relates to a kind of robot large cover and its preparation processes, belong to metal material field.
Background technology
To liberate manpower, increase productivity, promote working efficiency, robot comes into being.The robot of different industries its
Moulding is variant, but its core is often the high-speed cruising of inner computer, and carries its in-built exterior material
No less important, aluminium alloy is with its high intensity, low-density, corrosion resistance is good and is widely used the production with robot.
Aluminium alloy refers to based on aluminium, adds in the elements such as a certain amount of magnesium, silicon, molybdenum, chromium, manganese and impurity element is controlled to contain
The alloy system of amount and composition.Aluminium alloy has high intensity, high rigidity, light-weight and good ductility, particularly suitable for making
Structural material is therefore widely used in national defense industry and civilian industry, especially in automobile, motorcycle, firearms and household electrical appliances row
It is occupied an important position in industry.
Traditional Al-alloy products generally use pressure processing makes processed aluminium (base, ingot etc.) generate plastic deformation, so
It is divided to two kinds of cold working and hot-working according to aluminium product temperature difference afterwards.The processing method of aluminium has rolling, forging etc..It is general
Alloy material and processing method can meet the use under conventional environment, but (such as intensity, hard in the performance for promoting aluminium alloy
Degree) it still needs to further investigate.
For the shortcomings of conventional aluminum alloy crack is more, elongation percentage is poor, publication number 106048379A disclose it is a kind of by
Toughness, elongation percentage that the member such as rare earth, strontium usually improves product are added in aluminium alloy.However, it only promotes the toughness of aluminium alloy, prolong
Reply complex environment can not be enabled aluminum alloy to by stretching the performances such as rate.
Invention content
In view of the above problems, the present invention provides a kind of high intensity, high rigidity, anti-corrosion robot large cover.
To achieve these goals, the present invention uses following technical scheme：
A kind of robot large cover, the robot large cover are made of aluminium alloy, the ingredient of the aluminium alloy and its
Mass percent is：Fe：0.4-0.8%, Si：0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%, Be：0.01-
0.03%th, surplus is Al and impurity.
Be is outstanding metallic addition, and density is small, but intensity is 4 times of steel, using the light weight of Be, high intensity, no
It is only capable of so that aluminium alloy enhances the mechanical performance of aluminium alloy, while drop using the oxytropism of Be with preferable physical property
Impurity oxygen in low aluminium alloy.Ti chemical property itself is stablized, a small amount of addition in aluminium alloy, you can so that alloy has well
High-low temperature resistant, acid and alkali-resistance, high-strength characteristic.And Fe then forms multicomponent alloy phase with elements such as Si, Be, has both eliminated Fe pairings
The crisp harm of increasing of gold, while using the preferential coagulating property of Fe, become solidifying core, enhance the mechanical property of aluminium alloy.
Preferably, in the al alloy component, each content is H ＜ 0.005%, O ＜ 0.015% in impurity.Aluminium closes
It is broken that H in gold be easy to cause material hydrogen, and oxygen easily causes metal generation oxide and fails, and in preparation process, should pay attention to constantly
Air is mixed into.
The present invention additionally provides another technical solution while reasonable selection material mixture ratio：
A kind of preparation process of robot large cover, the method include the following steps：
(1) dispensing：Raw material and melting are weighed by the ingredient and its mass percent of above-mentioned aluminium alloy, pour into aluminium alloy
Plate；
(2) it is heat-treated：Aluminium alloy plate is first subjected to progressive normalized treatment, carries out temper, Ran Houjin after cooling again
The processing of row homogenizing annealing；
(3) it is molded：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product；
(4) it is surface-treated：In robot one layer of carbon dust of large cover surface of semi-finished uniform fold, vacuum flame is then carried out
Spray treatment obtains robot large cover finished product.
Ideal Aluminium alloy structural material generally requires it to have both high intensity, high tenacity, low brittle transition temperature,
The present invention is realized by converting heat treatment.Progressive normalized treatment changes a normalized treatment pattern of traditional fixed temperature,
First normalizing at a lower temperature, makes crystal grain in alloy refine in advance, changes interior section construction, while each phase in preliminarily stabilised alloy
Tissue, in gradual temperature-rise period below, crystal grain refinement is completed, and each phase constitution is uniformly distributed, and removes part internal stress, from outer
Portion shows high intensity, not easy to crack.And the temper after normalizing can increase its toughness to avoid the excessive high hardness of alloy,
Eliminate internal stress.Component segregation in alloy can be eliminated using homogenizing annealing, improve the interior tissue and apparent property of alloy, together
When effectively reduce large dendritic crystal tissue, promote the comprehensive performance of alloy.For the forming processes of aluminium alloy plate, change tradition machinery
The defects of processing time consuming is laborious is handled using flame straightening, and the Local treatment of component seam crossing is held more preferably, avoids flame pair
The harm of bulk material.
Finally, the present invention in aluminum alloy surface by covering carbon dust, then carry out vacuum flame spray treatment, in alloy surface
Nanoscale carbon film is formed, there is higher intensity, greatly strengthens the corrosion resistance of aluminium alloy.
Preferably, in step (2), progressive normalized treatment described in heat treatment is specially：First aluminium alloy plate is added
Heat keeps 5-9min, then aluminium alloy plate is heated to 520-550 DEG C with the heating rate of 1-3 DEG C/s, keeps to 380-460 DEG C
2-4min.Progressive normalized treatment can crystal grain thinning to greatest extent, homogenize each phase constitution.
Preferably, in step (2), the temperature of temper described in heat treatment is 300-350 DEG C, keeps 40-
60min.Tempering is avoided that the mistake high rigidity that normalizing is brought, and increases alloy ductility.
Preferably, in step (2), the processing of homogenizing annealing described in heat treatment is specially：After temper
Aluminium alloy plate is cooled to room temperature, and is immersed in modulation salting liquid, is heated to 200-300 DEG C, keeps 1-2h, cooled to room temperature.
Homogenizing annealing improves alloy machinability, adjusts interior tissue, eliminates alloy internal flaw.
Further preferably, the ingredient of the modulation salting liquid is：0.3-0.7mol/l sodium nitrate, 0.02-0.06mol/l chlorine
Change sodium, 0.3-0.7mol/l potassium nitrate, 0.02-0.06mol/l potassium chloride.The infiltration of modulation salting liquid can be so that alloy be heated
It is even, it avoids cracking caused by uneven heating two.
Preferably, in step (3), flame straightening described in molding is specially：It is closed using oxy-acetylene flame heating aluminium
Golden plate seam crossing has helium gas cooling, Repeat-heating-cooling 3-5 times after heating every time.Flame heating can make alloy temperature liter
Height, the characteristic to be softened using aluminium alloy under high temperature, progress is orthopedic, simple laborsaving, causes alloy defect to avoid excessively heating, often
It is secondary it is orthopedic after be required for cooling down, using repeatedly repeatedly orthopedic, both ensured that the performance of alloy was unaffected, at the same orthopedic effect compared with
It is good.
Further preferably, the volume ratio of oxygen and acetylene is 1-1.2 in the oxy-acetylene flame:1, heating temperature 150-
200 DEG C, the helium temperature of cooling is 0-4 DEG C.Neutral flame is orthopedic to have an adverse effect to alloy to avoid temperature is excessively high.
Preferably, in step (4), flame described in surface treatment is the body of oxy-acetylene flame, wherein oxygen and acetylene
Product is than being 0.8-1：1.Surface flame spray treatment is carried out using carburizing flame, the nanosizing of surface carbon dust, while energy can be promoted
Carburetting is carried out to it.
Compared with prior art, the invention has the advantages that：
(1) heat treatment of the invention is handled using progressive normalizing, tempering, homogenizing annealing, group in the uniform alloy of energy
It knits, crystal grain thinning, eliminates internal stress, increase the intensity, hardness and toughness of alloy.
(2) progressive normalized treatment can crystal grain in refining alloy twice, homogenize alloy phase structure, increase alloy strength.
(3) homogenizing annealing processing can eliminate component segregation in alloy, improve the structure property of alloy, and reduce coarse branch
Crystalline substance tissue promotes the comprehensive performance of alloy.
(4) it is orthopedic to carry out localized hyperthermia for flame straightening, and temperature is avoided to have an adverse effect alloy bulk.
(5) the flame nano-carbon film on surface can effectively obstruct the contact of alloy and air etc., while it is strong to promote surface
Degree enhances alloy wear-resisting performance.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention is further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.4-0.8%, Si：
0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%, Be：0.01-0.03%, surplus are Al and impurity, wherein miscellaneous
Matter includes H ＜ 0.004%, O ＜ 0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 420 DEG C,
7min is kept, then aluminium alloy plate is heated to 535 DEG C with the heating rate of 2 DEG C/s, keeps 3min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 325 DEG C, keeps 50min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 250 DEG C, keep 1.5h, cooled to room temperature,
It is middle modulation salting liquid ingredient be：0.5mol/l sodium nitrate, 0.04mol/l sodium chloride, 0.5mol/l potassium nitrate, 0.04mol/l
Potassium chloride.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1.1 using volume ratio:1 oxy-acetylene flame is heated to 175 DEG C in aluminium alloy plate seam crossing, heating
There are 2 DEG C of helium gas cooling, Repeat-heating-cooling 4 times afterwards.
Surface treatment：It is then 0.9 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carry out vacuum flame spray treatment, obtain robot large cover finished product.
Embodiment 2
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.4%th, Si：0.5%th,
Ti：0.02%th, Mg：0.05%th, Be：0.01%th, surplus is Al and impurity, and wherein impurity includes H ＜ 0.004%, O ＜
0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 420 DEG C,
7min is kept, then aluminium alloy plate is heated to 535 DEG C with the heating rate of 2 DEG C/s, keeps 3min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 325 DEG C, keeps 50min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 250 DEG C, keep 1.5h, cooled to room temperature,
It is middle modulation salting liquid ingredient be：0.5mol/l sodium nitrate, 0.04mol/l sodium chloride, 0.5mol/l potassium nitrate, 0.04mol/l
Potassium chloride.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1.1 using volume ratio:1 oxy-acetylene flame is heated to 175 DEG C in aluminium alloy plate seam crossing, heating
There are 2 DEG C of helium gas cooling, Repeat-heating-cooling 4 times afterwards.
Surface treatment：It is then 0.9 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carry out vacuum flame spray treatment, obtain robot large cover finished product.
Embodiment 3
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.8%th, Si：0.7%th,
Ti：0.04%th, Mg：0.09%th, Be：0.03%th, surplus is Al and impurity, and wherein impurity includes H ＜ 0.004%, O ＜
0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 420 DEG C,
7min is kept, then aluminium alloy plate is heated to 535 DEG C with the heating rate of 2 DEG C/s, keeps 3min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 325 DEG C, keeps 50min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 250 DEG C, keep 1.5h, cooled to room temperature,
It is middle modulation salting liquid ingredient be：0.5mol/l sodium nitrate, 0.04mol/l sodium chloride, 0.5mol/l potassium nitrate, 0.04mol/l
Potassium chloride.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1.1 using volume ratio:1 oxy-acetylene flame is heated to 175 DEG C in aluminium alloy plate seam crossing, heating
There are 2 DEG C of helium gas cooling, Repeat-heating-cooling 4 times afterwards.
Surface treatment：It is then 0.9 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carry out vacuum flame spray treatment, obtain robot large cover finished product.
Embodiment 4
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.4-0.8%, Si：
0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%, Be：0.01-0.03%, surplus are Al and impurity, wherein miscellaneous
Matter includes H ＜ 0.004%, O ＜ 0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 380 DEG C,
5min is kept, then aluminium alloy plate is heated to 520 DEG C with the heating rate of 1 DEG C/s, keeps 2min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 300 DEG C, keeps 40min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 200 DEG C, keep 1h, cooled to room temperature, wherein
Modulation salting liquid ingredient be：0.3mol/l sodium nitrate, 0.02mol/l sodium chloride, 0.3mol/l potassium nitrate, 0.02mol/l chlorine
Change potassium.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1.1 using volume ratio:1 oxy-acetylene flame is heated to 175 DEG C in aluminium alloy plate seam crossing, heating
There are 2 DEG C of helium gas cooling, Repeat-heating-cooling 4 times afterwards.
Surface treatment：It is then 0.9 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carry out vacuum flame spray treatment, obtain robot large cover finished product.
Embodiment 5
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.4-0.8%, Si：
0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%, Be：0.01-0.03%, surplus are Al and impurity, wherein miscellaneous
Matter includes H ＜ 0.004%, O ＜ 0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 460 DEG C,
9min is kept, then aluminium alloy plate is heated to 550 DEG C with the heating rate of 3 DEG C/s, keeps 4min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 325 DEG C, keeps 50min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 300 DEG C, keep 2h, cooled to room temperature, wherein
Modulation salting liquid ingredient be：0.7mol/l sodium nitrate, 0.06mol/l sodium chloride, 0.7mol/l potassium nitrate, 0.06mol/l chlorine
Change potassium.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1.1 using volume ratio:1 oxy-acetylene flame is heated to 175 DEG C in aluminium alloy plate seam crossing, heating
There are 2 DEG C of helium gas cooling, Repeat-heating-cooling 4 times afterwards.
Surface treatment：It is then 0.9 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carry out vacuum flame spray treatment, obtain robot large cover finished product.
Embodiment 6
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.4-0.8%, Si：
0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%, Be：0.01-0.03%, surplus are Al and impurity, wherein miscellaneous
Matter includes H ＜ 0.004%, O ＜ 0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 420 DEG C,
7min is kept, then aluminium alloy plate is heated to 535 DEG C with the heating rate of 2 DEG C/s, keeps 3min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 325 DEG C, keeps 50min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 250 DEG C, keep 1.5h, cooled to room temperature,
It is middle modulation salting liquid ingredient be：0.5mol/l sodium nitrate, 0.04mol/l sodium chloride, 0.5mol/l potassium nitrate, 0.04mol/l
Potassium chloride.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1 using volume ratio:1 oxy-acetylene flame is heated to 150 DEG C, after heating in aluminium alloy plate seam crossing
There are 0 DEG C of helium gas cooling, Repeat-heating-cooling 3 times.
Surface treatment：It is then 0.8 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carry out vacuum flame spray treatment, obtain robot large cover finished product.
Embodiment 7
Dispensing：Raw material is weighed by the ingredient and its mass percent of above-mentioned large cover, including Fe：0.4-0.8%, Si：
0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%, Be：0.01-0.03%, surplus are Al and impurity, wherein miscellaneous
Matter includes H ＜ 0.004%, O ＜ 0.006%.By raw material melting, pour into aluminium alloy plate.
Heat treatment：Aluminium alloy plate is first subjected to progressive normalized treatment, specially：Aluminium alloy plate is first heated to 420 DEG C,
7min is kept, then aluminium alloy plate is heated to 535 DEG C with the heating rate of 2 DEG C/s, keeps 3min；It is carried out at tempering again after cooling
Reason, the temperature of temper is 325 DEG C, keeps 50min；Then homogenizing annealing processing is carried out, specially：After temper
Aluminium alloy plate be cooled to room temperature, immerse in modulation salting liquid, be heated to 250 DEG C, keep 1.5h, cooled to room temperature,
It is middle modulation salting liquid ingredient be：0.5mol/l sodium nitrate, 0.04mol/l sodium chloride, 0.5mol/l potassium nitrate, 0.04mol/l
Potassium chloride.
Molding：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product, wherein
Flame straightening is specially：It is 1.2 using volume ratio:1 oxy-acetylene flame is heated to 200 DEG C in aluminium alloy plate seam crossing, heating
There are 4 DEG C of helium gas cooling, Repeat-heating-cooling 5 times afterwards.
Surface treatment：It is then 1 with volume ratio in robot one layer of carbon dust of large cover surface of semi-finished uniform fold：1
Oxy-acetylene flame carries out vacuum flame spray treatment, obtains robot large cover finished product.
Comparative example 1
With differing only in for embodiment 1, the heat treatment of comparative example 1 is conventional normalizing, tempering, annealing.
Comparative example 2
It is orthopedic using machinery when comparative example 2 is molded with differing only in for embodiment 1.
Comparative example 3
With differing only in for embodiment 1, the only spray painting of 3 product surface of comparative example is handled.
Product in embodiment 1-7 and comparative example 1-3 is tested, tests its intensity, corrosion resistance and hardness, as a result
As shown in table 1：
Table 1：The performance of product in embodiment 1-7 and comparative example 1-3
As can be seen from the table, different heat treatment process generates strong influence to intensity, hardness of product etc.,
Corrosion resistance data in table start the time for rusty stain occur for product surface, illustrate the flame nano-carbon film on surface, can be effective
Alloy contact with air etc. is obstructed, enhances corrosion resistance.
It is skilled to this field although having been made a detailed description to the present invention and being cited some specific embodiments
For technical staff, as long as it is obvious that can make various changes or correct without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of robot large cover, which is characterized in that the robot large cover is made of aluminium alloy, the aluminium alloy
Ingredient and its mass percent are：Fe：0.4-0.8%, Si：0.5-0.7%, Ti：0.02-0.04%, Mg：0.05-0.09%,
Be：0.01-0.03%, surplus are Al and impurity.
2. a kind of robot large cover according to claim 1, which is characterized in that the impurity includes H ＜ 0.004%, O
＜ 0.006%.
3. a kind of preparation process of robot large cover, which is characterized in that the method includes the following steps：
(1) dispensing：Raw material and melting are weighed by the ingredient and its mass percent of aluminium alloy in claim 1, aluminium is poured into and closes
Golden plate；
(2) it is heat-treated：Aluminium alloy plate is first subjected to progressive normalized treatment, carries out temper after cooling again, is then carried out equal
Homogenize annealing；
(3) it is molded：By the aluminium alloy plate after heat treatment is machined, flame straightening Hou get robots large cover semi-finished product；
(4) it is surface-treated：In robot one layer of carbon dust of large cover surface of semi-finished uniform fold, vacuum flame injection is then carried out
Processing, obtains robot large cover finished product.
4. the preparation process of a kind of robot large cover according to claim 3, which is characterized in that passed described in heat treatment
It is specially into formula normalized treatment：Aluminium alloy plate is first heated to 380-460 DEG C, keeps 5-9min, then the heating speed with 1-3 DEG C/s
Aluminium alloy plate is heated to 520-550 DEG C by rate, keeps 2-4min.
5. the preparation process of a kind of robot large cover according to claim 3, which is characterized in that returned described in heat treatment
The temperature of fire processing is 300-350 DEG C, keeps 40-60min.
6. the preparation process of a kind of robot large cover according to claim 3, which is characterized in that described in heat treatment
Homogenizing annealing is specially：Aluminium alloy plate after temper is cooled to room temperature, immerses in modulation salting liquid, is heated to
200-300 DEG C, keep 1-2h, cooled to room temperature.
A kind of 7. preparation process of robot large cover according to claim 6, which is characterized in that the modulation salting liquid
Ingredient be：0.3-0.7mol/l sodium nitrate, 0.02-0.06mol/l sodium chloride, 0.3-0.7mol/l potassium nitrate, 0.02-
0.06mol/l potassium chloride.
A kind of 8. preparation process of robot large cover according to claim 3, which is characterized in that flame described in molding
It is orthopedic to be specially：Aluminium alloy plate seam crossing is heated using oxy-acetylene flame, has a helium gas cooling after heating every time, Repeat-heating-
Cooling 3-5 times.
A kind of 9. preparation process of robot large cover according to claim 8, which is characterized in that the oxy-acetylene fire
The volume ratio of oxygen and acetylene is 1-1.2 in flame:1, heating temperature is 150-200 DEG C, and the helium temperature of cooling is 0-4 DEG C.
A kind of 10. preparation process of robot large cover according to claim 3, which is characterized in that institute in surface treatment
Flame is stated as oxy-acetylene flame, wherein the volume ratio of oxygen and acetylene is 0.8-1：1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109202068A (en) * | 2018-08-31 | 2019-01-15 | 宁波华源精特金属制品有限公司 | A kind of corrosion-resistant support plate |
| CN113927013A (en) * | 2021-09-08 | 2022-01-14 | 慈溪市龙山汽配有限公司 | Forming method of U-shaped bracket for automobile |
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| CN101146922A (en) * | 2005-05-25 | 2008-03-19 | 日本轻金属株式会社 | Aluminum alloy thin plate and its making method |
| CN102191414A (en) * | 2011-04-13 | 2011-09-21 | 河南顺源宇祥铝业科技有限公司 | Aluminum alloy cable strap material and production method thereof |
| CN106222498A (en) * | 2016-08-29 | 2016-12-14 | 河南明泰铝业股份有限公司 | A kind of hub of motorcycle aluminium alloy plate and preparation method thereof |
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| CN101146922A (en) * | 2005-05-25 | 2008-03-19 | 日本轻金属株式会社 | Aluminum alloy thin plate and its making method |
| CN102191414A (en) * | 2011-04-13 | 2011-09-21 | 河南顺源宇祥铝业科技有限公司 | Aluminum alloy cable strap material and production method thereof |
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| CN109202068A (en) * | 2018-08-31 | 2019-01-15 | 宁波华源精特金属制品有限公司 | A kind of corrosion-resistant support plate |
| CN109202068B (en) * | 2018-08-31 | 2021-02-05 | 宁波华源精特金属制品有限公司 | Corrosion-resistant supporting plate |
| CN113927013A (en) * | 2021-09-08 | 2022-01-14 | 慈溪市龙山汽配有限公司 | Forming method of U-shaped bracket for automobile |
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Application publication date: 20180608 |