CN106555116A - A kind of steel casting surface Hardening Treatment antifriction alloy shot and preparation method thereof - Google Patents
A kind of steel casting surface Hardening Treatment antifriction alloy shot and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
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- C22C33/06—Making ferrous alloys by melting using master alloys
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- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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Abstract
The invention belongs to metal abrasives technical field, is related to a kind of steel casting surface Hardening Treatment antifriction alloy shot and preparation method thereof, the percentage by weight of steel casting surface Hardening Treatment antifriction alloy shot each component is：Carbon 0.10～0.40%, silicon 0.10～0.50%, manganese 0.60～1.80%, chromium 0.5～1.50%, copper 0.30～0.80%, molybdenum 0.10～0.45%, vanadium 0.20～0.30%, boron 0.002～0.008%, sulphur<0.040%, phosphorus<0.040%, balance of iron.The present invention enhances its toughness by adding various alloying elements such as chromium, manganese, vanadium, molybdenum, copper and boron while product strength and hardness is improved, and preferably solves the problems, such as to improve intensity and increase toughness and can not take into account.Especially copper and boron define good synergy with other alloying elements, improve product of the present invention as the wear-resistant combination property of steel casting surface Hardening Treatment.
Description
Technical field
The invention belongs to metal abrasives technical field, and in particular to a kind of for carrying out ball blast, blast cleaning to steel surface
With the alloy balls of intensive treatment and preparation method thereof.
Background technology
The cast steel ball that China uses at present is GB GB6484/6485-86 product always, and its weight percent is consisted of：
0.85～1.20%C, 0.40～1.50%Si, 0.60～1.20%Mn, 0～0.05%S, 0～0.05%P, balance of Fe.One
Aspect, phosphorus content are high, in a few week cooling pelletizations, there is serious component segregation phenomenon, have a large amount of secondary cementites in tissue
Separate out and high-carbon lamellar martensite is formed, cast steel ball surface produces substantial amounts of micro-crack, Jing after quenching and tempering again, its composition
Segregation can not be eliminated, and face crack quantity may proceed to increase, and fragility is still larger, to steel surface ball blast or spray cleaning
Broken with during intensive treatment, waste is big, and its service life is shorter. according to international to shot fatigue life
Detection method-Irving (ERVIN) life test method is detected that the life value of S550 (1.7mm) is followed for only 2600～2800 times
Ring.In the impeller blasting for high strength steel and intensive treatment, its performance deficiency becomes apparent from.In order to solve above-mentioned technology
Problem, numerous researchers, are extended using circulation to improve its intensity and hardness by adding alloying element on the basis of cast steel ball
Number of times and service life.For example, the patent of invention of Application No. 200810158312.X, by the carbon content in cast steel ball quickly
0.1～0.30% is reduced to, cast steel ball has been made, the toughness of product shot is improve, improves can its test life value
To 3500～3600 times, 30% is extended.But it is demonstrated experimentally that the cast steel ball is declined due to hardness and intensity so that surface peening
The gross efficiency of process has declined.The patent of Application No. 00129412.1, carbon during carbon content is reduced to 0.60～0.85%
Level, the content of manganese is reduced to 0.15～0.4%, adds the elements such as chromium, vanadium, molybdenum wherein, to strengthen product strength, change
Kind toughness.On this basis, the patent of Application No. 201010602821.4 is further by the content of chromium by 0.10～0.20%
0.70～1.20% is brought up to, low-carbon high-chromium alloy strengthened steel cast ball is prepared for, intensity and hardness have obtained further carrying
Height, ERVIN code test machine circulation experiment number of times have been up to 4130 times.But further increase under such element composition
Plus the difficulty of ERVIN code test machine circulation experiment number of times is very big, because during adjustment shot alloying element, alloy balls
Intensity and its toughness be the two of a contradiction in terms of, tend not to take into account well, this is also that prior art is not solved very well
Problem certainly, therefore while the intensity and toughness that improve alloy balls are further to improve the technology that the performance need of shot is solved
Problem.
The content of the invention
The present invention is solution the problems of the prior art, there is provided a kind of steel casting surface Hardening Treatment antifriction alloy shot
And preparation method thereof, the inventive method improves its toughness while alloy balls intensity, hardness is increased substantially, further,
Improve its performance.
To solve above-mentioned technical problem, the present invention is employed the following technical solutions and is practiced：
A kind of steel casting surface Hardening Treatment antifriction alloy shot, its element weight percent are as follows：
Carbon 0.10～0.40%, silicon 0.10～0.50%, manganese 0.60～1.80%, chromium 0.5～1.50%, copper 0.30～
0.80%, molybdenum 0.10～0.45%, vanadium 0.20～0.30%, boron 0.002～0.008%, sulphur<0.040%, phosphorus<0.040%,
Balance of iron and inevitable impurity.
Preferably, described steel casting surface Hardening Treatment antifriction alloy shot, its element weight percent are as follows：
Carbon 0.20～0.30%, silicon 0.20～0.35%, manganese 0.80～1.20%, chromium 0.7～1.20%, copper 0.40～
0.60%, molybdenum 0.20～0.35%, vanadium 0.20～0.25%, boron 0.004～0.006%, sulphur<0.040%, phosphorus<0.040%,
Balance of iron and inevitable impurity.
It is furthermore preferred that described steel casting surface Hardening Treatment antifriction alloy shot, its element weight percent is as follows：
Carbon 0.25%, silicon 0.30%, manganese 1.00%, chromium 0.8%, copper 0.50%, molybdenum 0.30%, vanadium 0.22%, boron
0.005%, sulphur<0.040%, phosphorus<0.040%, balance of iron and inevitable impurity.
The above-mentioned steel casting surface Hardening Treatment preparation method of antifriction alloy shot, comprises the following steps：
K. first determine the element of raw material carbon steel waste material used, ferrosilicon, ferromanganese, ferrochrome, molybdenum-iron, vanadium iron, ferro-boron and red copper
Composition, then according to each element percentage by weight, calculate respectively needed raw material carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome,
The weight of molybdenum-iron, vanadium iron, ferro-boron and red copper, weighs up standby；
L. the carbon steel waste material for weighing up, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into medium-frequency induction furnace, opens intermediate frequency
Material in stove is heated to 1600～1650 DEG C by power supply so as to which melting is steel fused solution one；
M. the ferro-boron for weighing up is added in the steel fused solution one of step b so as to fully melt and be uniformly dispersed steel melt
Melt liquid two；
N. the red copper for weighing up is added in the steel fused solution two of step c so as to fully melt and be uniformly dispersed, obtains steel and melt
Melt liquid three；
O. pour the steel fused solution three of step d into tundish, then the fine aluminium that percentage by weight is 0.020% is adopted and is inserted
The method for entering is added in the steel fused solution three of the tundish, carries out deoxidation, obtains the steel fused solution four after deoxidation；
P. the steel fused solution four of step e is adopted into water atomization process, makes molten steel form droplet, drop is on molten steel surface
It is changed into spherical in the presence of power, falls in pond, after cooled and solidified, obtains semi-finished product alloy balls；
Q. described semi-finished product alloy balls are pulled out from pond, Jing thermals source are the fluid bed drying of liquefied gas or natural gas
Stove carries out flash baking, and control water content is less than 1.0% (percentage by weight), obtains alloy balls dry product；
R. described alloy balls dry product is added into continuous-type furnace, furnace temp control at 810～850 DEG C, institute
The alloy balls dry product stated time of staying in heating furnace is 30～40 minutes, is subsequently quenched using the cold water less than 35 DEG C
Process, obtain the alloy balls that quench；
S. described quenching alloy balls are added into tempering furnace, the temperature control of tempering furnace at 400～450 DEG C, during stop
Between be 30～40 minutes, obtain be tempered alloy balls；
T. described tempering alloy balls are carried out into cooling process using air-cooled method, then carries out screening and obtain steel casting
Part intensive treatment antifriction alloy shot product.
Preferably, preparation method of the steel casting surface Hardening Treatment with antifriction alloy shot, in step b, institute
The temperature for stating material in medium-frequency induction furnace heating furnace is 1630 DEG C.
Preferably, preparation method of the steel casting surface Hardening Treatment with antifriction alloy shot, in step g, control
The water content of alloyage shot is less than 0.91%.
Preferably, preparation method of the steel casting surface Hardening Treatment with antifriction alloy shot, in step h, plus
Hot furnace temperature is controlled at 830 DEG C, and the described alloy balls dry product time of staying in heating furnace is 35 minutes, subsequently using being less than
30 DEG C of cold water carries out Quenching Treatment, obtains the alloy balls that quench.
Preferably, preparation method of the steel casting surface Hardening Treatment with antifriction alloy shot, in step i, returns
At 420 DEG C, the time of staying is 35 minutes to the temperature control of stove.
It is furthermore preferred that preparation method of the steel casting surface Hardening Treatment with antifriction alloy shot, including in detail below
Step：
Stove gross weight is pressed into for 1000kg, each element percentage by weight：Carbon 0.15%, silicon 0.35%, manganese 1.20%, chromium
1.2%, copper 0.60%, molybdenum 0.35%, vanadium 0.25%, boron 0.006%, sulphur<0.040%, phosphorus<0.040%, balance of iron, meter
Raw materials used weight, wherein ferrosilicon 0.65kg, ferromanganese 8.64kg, ferrochrome 14.48kg, red copper 3.56kg, molybdenum-iron 5.67kg,
Vanadium iron 3.13kg, ferro-boron 0.27kg, the carbon steel waste material adopt GB for the high-quality carbon knot that GB/T699-1999, the trade mark are 15
Structure steel waste material, its essential element weight percentage are carbon 0.143%, silicon 0.27%, manganese 0.45%, chromium 0.25%, copper
0.25%, required weight is 970kg；Load weighted carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into intermediate frequency sense
Answer electric furnace.Open intermediate frequency power supply and material in stove is heated to into 1600～1650 DEG C so as to which melting is steel fused solution one.To weigh
Ferro-boron add described steel fused solution one so as to fully melt and be uniformly dispersed, obtain steel fused solution two.By load weighted purple
Copper adds described obtaining in steel fused solution two so as to fully melts and is uniformly dispersed, obtains steel fused solution three；
Pour steel fused solution three into tundish, 0.2kg fine aluminiums rod is added by the tundish using the method for insertion then
Fused solution in, carry out deoxidation, obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product
Alloy balls.Pull described semi-finished product alloy balls from pond out, send into the fluid bed baking that thermal source is liquefied gas or natural gas
Dry stove carries out flash baking, obtains the alloy balls dry product that water content is 0.72% (percentage by weight).By described steel alloy
Ball dry product sends into continuous-type furnace, and furnace temp is controlled at 830 DEG C, and described alloy balls dry product is stopped in heating furnace
Time is 35 minutes, subsequently carries out Quenching Treatment using 30 DEG C or so of cold water, obtains the alloy balls that quench.By described quenching
Alloy balls add tempering furnace, and at 420 DEG C, the time of staying is 35 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.
Described tempering alloy balls are carried out into cooling process using air-cooled method, screening is then carried out and is obtained steel casting intensive treatment
With antifriction alloy shot product.
In the present invention, first, the carbon content in steel alloy is adjusted to into 0.10～0.40%, under the content, can be with
Reduce fused solution and be frozen into the component segregation after spherical pellet and crizzle, after quenched and temper, can be complete
Network carbide caused by component segregation institute is eliminated, fragility is reduced, is improved toughness, reduce percentage of damage and wear extent, simultaneously because
Carbon content is unlikely to too low, therefore little to the loss of product strength and hardness；Secondly, the chromium of addition, vanadium and molybdenum, can improve and quench
Permeability, and dispersion-strengthened action is played in crystal, offsets the problem that hardness is reduced that carbon content reduces causing, improve quenching and
Hardness after tempering, improves resistance to impact and wear resistance, increases the service life；Again, the present invention is further in steel alloy
Add copper and boron alloy element.Significant precipitation strength effect is produced in steel by carbon, nitrogen are independent of due to copper, copper
Add and its aging hardening effect can be utilized to obtain good combination property；The content control of copper in the range of 0.3～0.8%, its
Saturation state will be close in steel, ε-Cu phases can be separated out, and be produced precipitation strength, be remarkably improved the intensity of steel, simultaneously because splitting
Line extensions path receives the obstruction of tiny Cu-rich particle so that steel strengthens which tough with fatigue crack energy for growth is done to obtain
Property.It is after boron is added in steel as microalloy element, highly advantageous to obtaining tiny microstructure, can obtain ferrite bainite and
Granular bainite microstructure, is conducive to strengthening the toughness of alloy steel product, improves the comprehensive mechanical property of alloy steel product.Separately
Outward, the addition of boron can cause temperature to carry out at 400 DEG C～450 DEG C relatively low of temperature.Especially copper and boron and other
Alloying element defines good synergy, improves product of the present invention as the wear-resistant synthesis of steel casting surface Hardening Treatment
Performance.
The present invention has following significant effect compared with prior art：
(1) while product strength and hardness is improved, its toughness is enhanced, preferably solves raising intensity and increase
The problem that toughness can not be taken into account.
(2) service life of product has obtained significantly extending, from the testing machine 2600～2800 times of normal steel casting ball
Left and right, increases to 4350-4600 time quickly, and also the access times of alloy cast steel ball more improved than other ECDC aurification have more closely
More than 1000 times.
(3) compared to other modified cast steel ball products, the production cost of product of the present invention remains basically stable so that the present invention
The cost performance of product is higher.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
Enter stove gross weight for 1000kg, alloy balls product element wt percentage composition：Carbon 0.25%, silicon 0.30%, manganese
1.00%, chromium 0.8%, copper 0.50%, molybdenum 0.30%, vanadium 0.22%, boron 0.005%, sulphur<0.040%, phosphorus<0.040%, it is remaining
Measure as iron.The element composition of each raw material according to listed by the element wt percentage composition requirement and table 1 calculates raw materials used
Weight, wherein ferrosilicon 0.14kg, ferromanganese 4.12kg, ferrochrome 8.40kg, red copper 2.53kg, molybdenum-iron 4.86kg, vanadium iron 2.76kg, boron
Iron 0.22kg.Carbon steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 25, its main unit
Plain weight percentage is carbon 0.25%, silicon 0.27%, manganese 0.65%, chromium 0.25%, copper 0.25%, and required weight is 980kg.
Load weighted carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added to into medium-frequency induction furnace.Opening intermediate frequency power supply will
In stove, material is heated to 1600～1650 DEG C so as to which melting is steel fused solution one.Described steel is added to melt load weighted ferro-boron
Melt in liquid one so as to fully melt and be uniformly dispersed, obtain steel fused solution two.Load weighted red copper is added into described steel fused solution
In two so as to fully melt and be uniformly dispersed, steel fused solution three is obtained.
Pour steel fused solution three into tundish, 0.2kg fine aluminiums rod is added by the tundish using the method for insertion then
Fused solution in, carry out deoxidation, obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product
Alloy balls.Pull described semi-finished product alloy balls from pond out, send into the fluid bed baking that thermal source is liquefied gas or natural gas
Dry stove carries out flash baking, obtains the alloy balls dry product that water content is 0.83% (percentage by weight).By described steel alloy
Ball dry product sends into continuous-type furnace, and furnace temp is controlled at 850 DEG C, and described alloy balls dry product is stopped in heating furnace
Time is 40 minutes, subsequently carries out Quenching Treatment using 30 DEG C or so of cold water, obtains the alloy balls that quench.By described quenching
Alloy balls add tempering furnace, and at 450 DEG C, the time of staying is 40 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.
Described tempering alloy balls are carried out into cooling process using air-cooled method, screening is then carried out and is obtained steel casting intensive treatment
With antifriction alloy shot product, finished product gross weight 954kg of various model sizes.Product adopts Jing direct-reading spectrometers and sulphur phosphorus to analyze
Instrument is measured to component, carries out fatigue life cycle experiment using ERVIN fatigue criterions circulation testing machine.The results are shown in Table 2.
Embodiment 2
Enter stove gross weight for 1000kg, alloy balls product element wt percentage composition：Carbon 0.15%, silicon 0.35%, manganese
1.20%, chromium 1.2%, copper 0.60%, molybdenum 0.35%, vanadium 0.25%, boron 0.006%, sulphur<0.040%, phosphorus<0.040%, it is remaining
Measure as iron.The element composition of each raw material according to listed by the element wt percentage composition requirement and table 1 calculates raw materials used
Weight, wherein ferrosilicon 0.65kg, ferromanganese 8.64kg, ferrochrome 14.48kg, red copper 3.56kg, molybdenum-iron 5.67kg, vanadium iron 3.13kg,
Ferro-boron 0.27kg.Carbon steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 15, and which is main
Element wt percentage composition is carbon 0.143%, silicon 0.27%, manganese 0.45%, chromium 0.25%, copper 0.25%, and required weight is
970kg.Load weighted carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into medium-frequency induction furnace.Open medium frequency electric
Material in stove is heated to 1630 DEG C by source so as to which melting is steel fused solution one.Load weighted ferro-boron is added into described steel melting
In liquid one so as to fully melt and be uniformly dispersed, steel fused solution two is obtained.The addition of load weighted red copper described is obtained into steel fused solution
In two so as to fully melt and be uniformly dispersed, steel fused solution three is obtained.
Pour steel fused solution three into tundish, 0.2kg fine aluminiums rod is added by the tundish using the method for insertion then
Fused solution in, carry out deoxidation, obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product
Alloy balls.Pull described semi-finished product alloy balls from pond out, send into the fluid bed baking that thermal source is liquefied gas or natural gas
Dry stove carries out flash baking, obtains the alloy balls dry product that water content is 0.72% (percentage by weight).By described steel alloy
Ball dry product sends into continuous-type furnace, and furnace temp is controlled at 830 DEG C, and described alloy balls dry product is stopped in heating furnace
Time is 35 minutes, subsequently carries out Quenching Treatment using 30 DEG C or so of cold water, obtains the alloy balls that quench.By described quenching
Alloy balls add tempering furnace, and at 420 DEG C, the time of staying is 35 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.
Described tempering alloy balls are carried out into cooling process using air-cooled method, screening is then carried out and is obtained steel casting intensive treatment
With antifriction alloy shot product, finished product gross weight 963kg of various model sizes.Product adopts Jing direct-reading spectrometers and sulphur phosphorus to analyze
Instrument is measured to component, carries out fatigue life cycle experiment using ERVIN fatigue criterions circulation testing machine.The results are shown in Table 2.
Embodiment 3
Enter stove gross weight for 1000kg, alloy balls product element wt percentage composition：Carbon 0.30%, silicon 0.25%, manganese
0.80%, chromium 0.75%, copper 0.40%, molybdenum 0.20%, vanadium 0.20%, boron 0.004%, sulphur<0.040%, phosphorus<0.040%, it is remaining
Measure as iron.The element composition of each raw material according to listed by the element wt percentage composition requirement and table 1 calculates raw materials used
Weight, wherein ferrosilicon 0.41kg, ferromanganese 4.04kg, ferrochrome 7.62kg, red copper 1.53kg, molybdenum-iron 3.24kg, vanadium iron 2.51kg, boron
Iron 0.18kg.Carbon steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 30, its main unit
Plain weight percentage is carbon 0.300%, silicon 0.20%, manganese 0.45%, chromium 0.25%, copper 0.25%, and required weight is
983kg.Load weighted carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into medium-frequency induction furnace.Open medium frequency electric
Material in stove is heated to 1600～1650 DEG C by source so as to which melting is steel fused solution one.Load weighted ferro-boron is added described
In steel fused solution one so as to fully melt and be uniformly dispersed, steel fused solution two is obtained.Described steel is added to melt load weighted red copper
Melt in liquid two so as to fully melt and be uniformly dispersed, obtain steel fused solution three.
Pour steel fused solution three into tundish, 0.25kg fine aluminiums rod is added by the tundish using the method for insertion then
Fused solution in, carry out deoxidation, obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product
Alloy balls.Pull described semi-finished product alloy balls from pond out, send into the fluid bed baking that thermal source is liquefied gas or natural gas
Dry stove carries out flash baking, obtains the alloy balls dry product that water content is 0.68% (percentage by weight).By described steel alloy
Ball dry product sends into continuous-type furnace, and furnace temp is controlled at 820 DEG C, and described alloy balls dry product is stopped in heating furnace
Time is 40 minutes, subsequently carries out Quenching Treatment using 30 DEG C or so of cold water, obtains the alloy balls that quench.By described quenching
Alloy balls add tempering furnace, and at 430 DEG C, the time of staying is 40 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.
Described tempering alloy balls are carried out into cooling process using air-cooled method, screening is then carried out and is obtained steel casting intensive treatment
With antifriction alloy shot product, finished product gross weight 958kg of various model sizes.Product adopts Jing direct-reading spectrometers and sulphur phosphorus to analyze
Instrument is measured to component, carries out fatigue life cycle experiment using ERVIN fatigue criterions circulation testing machine.The results are shown in Table 2.
Embodiment 4
Enter stove gross weight for 1000kg, alloy balls product element wt percentage composition：Carbon 0.40%, silicon 0.45%, manganese
0.70%, chromium 1.50%, copper 0.30%, molybdenum 0.15%, vanadium 0.20%, boron 0.007%, sulphur<0.040%, phosphorus<0.040%, it is remaining
Measure as iron.The element composition of each raw material according to listed by the element wt percentage composition requirement and table 1 calculates raw materials used
Weight, wherein ferrosilicon 2.26kg, ferromanganese 2.97kg, ferrochrome 19.00kg, red copper 0.56kg, molybdenum-iron 2.43kg, vanadium iron 2.51kg,
Ferro-boron 0.31kg.Carbon steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 40, and which is main
Element wt percentage composition is carbon 0.41%, silicon 0.25%, manganese 0.45%, chromium 0.25%, copper 0.25%, and required weight is
970kg.Load weighted carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into medium-frequency induction furnace.Open medium frequency electric
Material in stove is heated to 1600～1650 DEG C by source so as to which melting is steel fused solution one.Load weighted ferro-boron is added described
In steel fused solution one so as to fully melt and be uniformly dispersed, steel fused solution two is obtained.Described steel is added to melt load weighted red copper
Melt in liquid two so as to fully melt and be uniformly dispersed, obtain steel fused solution three.
Pour steel fused solution three into tundish, 0.25kg fine aluminiums rod is added by the tundish using the method for insertion then
Fused solution in, carry out deoxidation and obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product
Alloy balls.Pull described semi-finished product alloy balls from pond out, send into the fluid bed baking that thermal source is liquefied gas or natural gas
Dry stove carries out flash baking, obtains the alloy balls dry product that water content is 0.91% (percentage by weight).By described steel alloy
Ball dry product sends into continuous-type furnace, and furnace temp is controlled at 810 DEG C, and described alloy balls dry product is stopped in heating furnace
Time is 40 minutes, subsequently carries out Quenching Treatment using 30 DEG C or so of cold water, obtains the alloy balls that quench.By described quenching
Alloy balls add tempering furnace, and at 450 DEG C, the time of staying is 36 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.
Described tempering alloy balls are carried out into cooling process using air-cooled method, screening is then carried out and is obtained steel casting intensive treatment
With antifriction alloy shot product, finished product gross weight 951kg of various model sizes.Product adopts Jing direct-reading spectrometers and sulphur phosphorus to analyze
Instrument is measured to component, carries out fatigue life cycle experiment using ERVIN fatigue criterions circulation testing machine.The results are shown in Table 2.
Embodiment 5
Enter stove gross weight for 1000kg, alloy balls product element wt percentage composition：Carbon 0.15%, silicon 0.30%, manganese
1.70%, chromium 1.30%, copper 0.80%, molybdenum 0.45%, vanadium 0.30%, boron 0.005%, sulphur<0.040%, phosphorus<0.040%, it is remaining
Measure as iron.The element composition of each raw material according to listed by the element wt percentage composition requirement and table 1 calculates raw materials used
Weight, wherein ferromanganese 14.31kg, ferrochrome 16.01kg, red copper 5.56kg, molybdenum-iron 7.29kg, vanadium iron 3.76kg, ferro-boron 0.22kg.
Carbon steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 15, its essential element weight hundred
Carbon 0.143%, silicon 0.27%, manganese 0.45%, chromium 0.25%, copper 0.25% are grouped into, required weight is 960kg.To weigh
Carbon steel waste material well, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron add medium-frequency induction furnace.Intermediate frequency power supply is opened by material in stove
It is heated to 1600～1650 DEG C so as to which melting is steel fused solution one.Load weighted ferro-boron is added in described steel fused solution one,
Which is fully melted and is uniformly dispersed, obtain steel fused solution two.Load weighted red copper is added in described steel fused solution two so as to
Fully melt and be uniformly dispersed, obtain steel fused solution three.
Pour steel fused solution three into tundish, 0.3kg fine aluminiums rod is added by the tundish using the method for insertion then
Fused solution in, carry out deoxidation, obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product
Alloy balls.Pull described semi-finished product alloy balls from pond out, send into the fluid bed baking that thermal source is liquefied gas or natural gas
Dry stove carries out flash baking, obtains the alloy balls dry product that water content is 0.91% (percentage by weight).By described steel alloy
Ball dry product sends into continuous-type furnace, and furnace temp is controlled at 850 DEG C, and described alloy balls dry product is stopped in heating furnace
Time is 38 minutes, subsequently carries out Quenching Treatment using 30 DEG C or so of cold water, obtains the alloy balls that quench.By described quenching
Alloy balls add tempering furnace, and at 440 DEG C, the time of staying is 40 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.
Described tempering alloy balls are carried out into cooling process using air-cooled method, screening is then carried out and is obtained steel casting intensive treatment
With antifriction alloy shot product, finished product gross weight 967kg of various model sizes.Product adopts Jing direct-reading spectrometers and sulphur phosphorus to analyze
Instrument is measured to component, carries out fatigue life cycle experiment using ERVIN fatigue criterions circulation testing machine.The results are shown in Table 2.
Reference examples 1：
Required according to the element wt percentage composition of GB GB6484/6485-86 cast steel ball：0.85～1.20%C, 0.40
～1.50%Si, 0.60～1.20%Mn, 0～0.05%S, 0～0.05%P, balance of Fe, the steel alloy element of this reference examples
Weight percent composition is chosen to be：Carbon 1.00%, silicon 0.80%, manganese 1.00%, sulphur<0.05%, phosphorus<0.05%, balance of iron enters
Stove gross weight is 1000kg.The element composition meter of each raw material according to listed by described element wt percentage composition requirement and table 1
Raw materials used weight, wherein ferrosilicon 7.27, ferromanganese 6.28kg, carburant 1.56kg.Carbon steel waste material adopts GB for GB/
T699-1999, the trade mark are 85 carbon constructional quality steel waste material, and its essential element weight percentage is carbon 0.86%, silicon
0.25%th, manganese 0.45%, chromium 0.25%, required weight are 985kg.By load weighted carbon steel waste material, ferrosilicon, ferromanganese, carburant
Add medium-frequency induction furnace.Open intermediate frequency power supply and material in stove is heated to into 1600～1650 DEG C so as to which melting is steel fused solution.
Pour fused solution into tundish, 0.25kg fine aluminiums rod is added by the molten of the tundish using the method for insertion then
Melt in liquid, carry out deoxidation.Granulation is carried out using water atomization process and obtains semi-finished product alloy balls.Pull described half from pond out
Final alloy shot, the fluid bed drying oven for sending into thermal source for liquefied gas or natural gas carry out flash baking, and obtaining water content is
The alloy balls dry product of 0.89% (percentage by weight).Described alloy balls dry product is sent into into continuous-type furnace, heating furnace
At 830 DEG C, the described alloy balls dry product time of staying in heating furnace is 40 minutes to temperature control, subsequently adopts 30 DEG C or so
Cold water carry out Quenching Treatment, obtain quench alloy balls.Described quenching alloy balls are added into tempering furnace, the temperature of tempering furnace
At 430 DEG C, the time of staying is 40 minutes for degree control, obtains being tempered alloy balls.By described tempering alloy balls using air-cooled
Method carry out cooling process, then carry out screening obtain steel casting intensive treatment antifriction alloy shot product, various models
Finished product gross weight 974kg of size.Product is measured to component using Jing direct-reading spectrometers and sulphur phosphorus analyzer, using ERVIN
Fatigue criterion circulation testing machine carries out fatigue life cycle experiment.The results are shown in Table 2.
Reference examples 2：
This reference examples 1 GB GB6484/6485-86 cast steel ball alloy of reference examples constitute and on the basis of add copper and boron unit
Element, the element wt percentage composition of selected alloy balls：Carbon 1.00%, silicon 0.80%, manganese 1.00%, copper 0.25%, boron
0.006%, sulphur<0.05%, phosphorus<0.05%, balance of iron enters stove gross weight for 1000kg.According to the element composition requirement
Raw materials used weight, wherein ferrosilicon 7.27%, ferromanganese 6.28kg, red copper are calculated with the element composition of listed each raw material in table 1
0.04kg, ferro-boron 0.22kg.Carbon steel waste material adopts GB and gives up for the carbon constructional quality steel that GB/T699-1999, the trade mark are 85
Material, its essential element weight percentage are carbon 0.86%, silicon 0.25%, manganese 0.45%, chromium 0.25%, and required weight is
985kg.Load weighted carbon steel waste material, ferrosilicon, ferromanganese, carburant etc. are added into medium-frequency induction furnace.Intermediate frequency power supply is opened by stove
Interior material is heated to 1600～1650 DEG C so as to which melting is steel fused solution.
Pour fused solution into tundish, 0.25kg fine aluminiums rod is added by the molten of the tundish using the method for insertion then
Melt in liquid, carry out deoxidation.Granulation is carried out using water atomization process and obtains semi-finished product alloy balls.Pull described half from pond out
Final alloy shot, the fluid bed drying oven for sending into thermal source for liquefied gas or natural gas carry out flash baking, and obtaining water content is
The alloy balls dry product of 0.92% (percentage by weight).Described alloy balls dry product is sent into into continuous-type furnace, heating furnace
At 830 DEG C, the described alloy balls dry product time of staying in heating furnace is 40 minutes to temperature control, subsequently adopts 30 DEG C or so
Cold water carry out Quenching Treatment, obtain quench alloy balls.Described quenching alloy balls are added into tempering furnace, the temperature of tempering furnace
At 430 DEG C, the time of staying is 40 minutes for degree control, obtains being tempered alloy balls.By described tempering alloy balls using air-cooled
Method carry out cooling process, then carry out screening obtain steel casting intensive treatment antifriction alloy shot product, various models
Finished product gross weight 968kg of size.Product is measured to component using Jing direct-reading spectrometers and sulphur phosphorus analyzer, using ERVIN
Fatigue criterion circulation testing machine carries out fatigue life cycle experiment.The results are shown in Table 2.
Reference examples 3：
Alloy balls element wt percentage composition of this reference examples with reference to ZL00129412.1 patents of invention：Carbon 0.60～
0.85%, silicon 0.40～1.50%, manganese 0.50～1.20%, chromium 0.15～0.40%, vanadium 0.10～0.20%, molybdenum 0.10～
0.20%, sulphur<0.05%, phosphorus<0.05%, the element wt percentage composition of this reference examples alloy balls is selected by balance of iron
For carbon 0.75%, silicon 0.90%, manganese 0.85%, chromium 0.28%, vanadium 0.15%, molybdenum 0.15%, sulphur<0.05%, phosphorus<0.05%,
Balance of iron.Enter stove gross weight for 1000kg.The element composition meter of each raw material according to listed by the element composition requirement and table 1
Raw materials used weight, wherein ferrosilicon 8.54kg, ferromanganese 4.59kg, ferrochrome 0.51kg, molybdenum-iron 2.43kg, vanadium iron 1.88kg.
Carbon steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 75, its essential element weight hundred
Content is divided to be carbon 0.75%, silicon 0.25%, manganese 0.45%, chromium 0.25%, required weight is 983kg.Load weighted carbon steel is given up
Material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron add medium-frequency induction furnace.Open intermediate frequency power supply and material in stove is heated to into 1600
～1650 DEG C so as to which melting is steel fused solution.
Pour fused solution into tundish, 0.20kg fine aluminiums rod is added by the molten of the tundish using the method for insertion then
Melt in liquid, carry out deoxidation.Granulation is carried out using water atomization process and obtains semi-finished product alloy balls.Pull described half from pond out
Final alloy shot, the fluid bed drying oven for sending into thermal source for liquefied gas or natural gas carry out flash baking, and obtaining water content is
The alloy balls dry product of 0.94% (percentage by weight).Described alloy balls dry product is sent into into continuous-type furnace, heating furnace
At 830 DEG C, the described alloy balls dry product time of staying in heating furnace is 40 minutes to temperature control, subsequently adopts 30 DEG C or so
Cold water carry out Quenching Treatment, obtain quench alloy balls.Described quenching alloy balls are added into tempering furnace, the temperature of tempering furnace
At 430 DEG C, the time of staying is 40 minutes for degree control, obtains being tempered alloy balls.By described tempering alloy balls using air-cooled
Method carry out cooling process, then carry out screening obtain steel casting intensive treatment antifriction alloy shot product, various models
Finished product gross weight 958kg of size.Product is measured to component using Jing direct-reading spectrometers and sulphur phosphorus analyzer, using ERVIN
Fatigue criterion circulation testing machine carries out fatigue life cycle experiment.The results are shown in Table 2.
Reference examples 4：
Steel alloy element wt percentage composition of this reference examples with reference to ZL20101060281.4 patents of invention：Carbon 0.10～
0.20%, silicon 0.17～0.37%, manganese 0.35～0.65%, chromium 0.70～1.10%, sulphur<0.035%, phosphorus<0.035%, it is remaining
Measure as iron, the alloy balls element wt percentage composition of this reference examples is chosen to be into carbon 0.15%, silicon 0.27%, manganese 0.50%,
Chromium 0.90%, sulphur<0.035%, phosphorus<0.035%, balance of iron.Enter stove gross weight for 1000kg.Will according to element composition
In summation table 1, the element composition of listed each raw material calculates raw materials used weight, wherein ferromanganese 0.62kg, ferrochrome 9.86kg.Carbon
Steel waste material adopts GB for the carbon constructional quality steel waste material that GB/T699-1999, the trade mark are 15, its essential element weight percent
Content is carbon 0.143%, silicon 0.27%, manganese 0.45%, chromium 0.25%, and required weight is 990kg.Load weighted carbon steel is given up
Material, ferromanganese, ferrochrome etc. add medium-frequency induction furnace.Open intermediate frequency power supply and material in stove be heated to into 1600～1650 DEG C so as to
Melting is steel fused solution.
Pour fused solution into tundish, 0.20kg fine aluminiums rod is added by the molten of the tundish using the method for insertion then
Melt in liquid, carry out deoxidation.Granulation is carried out using water atomization process and obtains semi-finished product alloy balls.Pull described half from pond out
Final alloy shot, the fluid bed drying oven for sending into thermal source for liquefied gas or natural gas carry out flash baking, and obtaining water content is
The alloy balls dry product of 0.84% (percentage by weight).Described alloy balls dry product is sent into into continuous-type furnace, heating furnace
At 830 DEG C, the described alloy balls dry product time of staying in heating furnace is 40 minutes to temperature control, subsequently adopts 30 DEG C or so
Cold water carry out Quenching Treatment, obtain quench alloy balls.Described quenching alloy balls are added into tempering furnace, the temperature of tempering furnace
At 430 DEG C, the time of staying is 40 minutes for degree control, obtains being tempered alloy balls.By described tempering alloy balls using air-cooled
Method carry out cooling process, then carry out screening obtain steel casting intensive treatment antifriction alloy shot product, various models
Finished product gross weight 954kg of size.Product is measured to component using Jing direct-reading spectrometers and sulphur phosphorus analyzer, using ERVIN
Fatigue criterion circulation testing machine carries out fatigue life cycle experiment.The results are shown in Table 2.
1 various starting material elements of table constitute table
| Raw material | GB | The trade mark | C | Si | Mn | Cr | V | Mo | Cu | B | P | S |
| Ferrosilicon | GB/T 2272-2009 | FeSi75AI1.0-B | 0.2 | 75.3 | 0.5 | 0.5 | 0.04 | 0.02 | ||||
| Ferromanganese | GB/T 3795-2014 | FeMn88C0.2 | 0.2 | 1 | 88.6 | 0.15 | 0.02 | |||||
| Ferrochrome | GB/T 5683-2008 | FeCr65C0.15 | 0.25 | 1.5 | 66.2 | 0.03 | 0.025 | |||||
| Vanadium iron | GB/T4139-2012 | FeV80-A | 0.15 | 1.5 | 79.8 | 0.05 | 0.04 | |||||
| Molybdenum-iron | GB/T3649-2008 | FeMo60-A | 0.1 | 1 | 61.7 | 0.5 | 0.08 | 0.04 | ||||
| Ferro-boron | GB/T 5682-2015 | FeB22C0.1 | 0.1 | 4 | 22.4 | 0.03 | 0.01 | |||||
| Red copper | GB/T 5231-2001 | T3 | 99.7 | |||||||||
| Carburant | 96.0 |
The testing results such as 2 each embodiment component analysis of table, hardness and cycle-index
Note：Alloying element analysis adopts Beijing using German Spike SPECTRO MAXx direct-reading spectrometers, carbon and sulphur contents
Wan Lianda letters section instrument CS-903 high frequency carbon and sulfur analytical instruments, fatigue test cycle-index adopt ERVIN code test machines, used
The product type of each embodiment and reference examples is S550 (1.7mm).
Various alloying elements such as chromium, manganese, vanadium, molybdenum, copper and boron are added in the present invention, product strength and hardness is being improved
Meanwhile, its toughness is enhanced, preferably solves the problems, such as to improve intensity and increase toughness and can not take into account.Especially copper and boron with
Other alloying elements define good synergy, improve product of the present invention as the wear-resistant of steel casting surface Hardening Treatment
Combination property, makes the service life of product obtain significantly extending, and ERVIN testing machines cycle-index is from normal steel casting ball
Testing machine 2800 times and other patented technologies improved 3980, increase to 4350-4600 time of the present patent application.
Claims (9)
1. a kind of steel casting surface Hardening Treatment antifriction alloy shot, is characterized in that, its element weight percent is as follows：
Carbon 0.10～0.40%, silicon 0.10～0.50%, manganese 0.60～1.80%, chromium 0.5～1.50%, copper 0.30～
0.80%, molybdenum 0.10～0.45%, vanadium 0.20～0.30%, boron 0.002～0.008%, sulphur<0.040%, phosphorus<0.040%,
Balance of iron and inevitable impurity.
2. steel casting surface Hardening Treatment antifriction alloy shot as claimed in claim 1, is characterized in that, its element wt hundred
Divide ratio as follows：
Carbon 0.20～0.30%, silicon 0.20～0.35%, manganese 0.80～1.20%, chromium 0.7～1.20%, copper 0.40～
0.60%, molybdenum 0.20～0.35%, vanadium 0.20～0.25%, boron 0.004～0.006%, sulphur<0.040%, phosphorus<0.040%,
Balance of iron and inevitable impurity.
3. steel casting surface Hardening Treatment antifriction alloy shot as claimed in claim 1, is characterized in that, its element wt hundred
Divide ratio as follows：
Carbon 0.25%, silicon 0.30%, manganese 1.00%, chromium 0.8%, copper 0.50%, molybdenum 0.30%, vanadium 0.22%, boron 0.005%,
Sulphur<0.040%, phosphorus<0.040%, balance of iron and inevitable impurity.
4. preparation method of the steel casting surface Hardening Treatment with antifriction alloy shot described in a kind of claim 1, is characterized in that bag
Include following steps：
A. the element composition of raw material carbon steel waste material used, ferrosilicon, ferromanganese, ferrochrome, molybdenum-iron, vanadium iron, ferro-boron and red copper is first determined,
Then according to each element percentage by weight, calculate respectively needed raw material carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, molybdenum-iron,
The weight of vanadium iron, ferro-boron and red copper, weighs up standby；
B. the carbon steel waste material for weighing up, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into medium-frequency induction furnace, opens intermediate frequency power supply
Material in stove is heated to into 1600～1650 DEG C so as to which melting is steel fused solution one；
C. the ferro-boron for weighing up is added in the steel fused solution one of step b so as to which fully melt and be uniformly dispersed and to obtain steel fused solution
Two；
D. the red copper for weighing up is added in the steel fused solution two of step c so as to fully melt and be uniformly dispersed, obtains steel fused solution
Three；
E. pour the steel fused solution three of step d into tundish, the fine aluminium that percentage by weight is 0.020% is adopted into insertion then
Method is added in the steel fused solution three of the tundish, carries out deoxidation, obtains the steel fused solution four after deoxidation；
F. the steel fused solution four of step e is adopted into water atomization process, makes molten steel form droplet, drop is capillary in molten steel
It is changed into spherical under effect, falls in pond, after cooled and solidified, obtains semi-finished product alloy balls；
G. described semi-finished product alloy balls are pulled from pond out, Jing thermals source are that the fluid bed drying oven of liquefied gas or natural gas enters
Row flash baking, control water content are less than 1.0% (percentage by weight), obtain alloy balls dry product；
H. described alloy balls dry product is added into continuous-type furnace, furnace temp is controlled at 810～850 DEG C, described
Alloy balls dry product time of staying in heating furnace is 30～40 minutes, is subsequently carried out at quenching using the cold water less than 35 DEG C
Reason, obtains the alloy balls that quench；
I. described quenching alloy balls are added into tempering furnace, at 400～450 DEG C, the time of staying is for the temperature control of tempering furnace
30～40 minutes, obtain being tempered alloy balls；
J. described tempering alloy balls are carried out into cooling process using air-cooled method, then carries out screening acquisition steel casting strong
Change process antifriction alloy shot product.
5. the steel casting surface Hardening Treatment preparation method of antifriction alloy shot as claimed in claim 4, is characterized in that, described
In step b, in the medium-frequency induction furnace heating furnace, the temperature of material is 1630 DEG C.
6. the steel casting surface Hardening Treatment preparation method of antifriction alloy shot as claimed in claim 4, is characterized in that, described
In step g, the water content for controlling alloy balls is less than 0.91%.
7. the steel casting surface Hardening Treatment preparation method of antifriction alloy shot as claimed in claim 4, is characterized in that, described
In step h, furnace temp is controlled at 830 DEG C, and the described alloy balls dry product time of staying in heating furnace is 35 minutes, with
Quenching Treatment is carried out using the cold water less than 30 DEG C afterwards, the alloy balls that quench are obtained.
8. the steel casting surface Hardening Treatment preparation method of antifriction alloy shot as claimed in claim 4, is characterized in that, described
In step i, at 420 DEG C, the time of staying is 35 minutes to the temperature control of tempering furnace.
9. the steel casting surface Hardening Treatment preparation method of antifriction alloy shot as claimed in claim 4, is characterized in that, including
Step in detail below：
Stove gross weight is pressed into for 1000kg, each element percentage by weight：Carbon 0.15%, silicon 0.35%, manganese 1.20%, chromium 1.2%,
Copper 0.60%, molybdenum 0.35%, vanadium 0.25%, boron 0.006%, sulphur<0.040%, phosphorus<0.040%, balance of iron calculates used
The weight of raw material, wherein ferrosilicon 0.65kg, ferromanganese 8.64kg, ferrochrome 14.48kg, red copper 3.56kg, molybdenum-iron 5.67kg, vanadium iron
3.13kg, ferro-boron 0.27kg, the carbon steel waste material adopt GB for the carbon constructional quality steel that GB/T699-1999, the trade mark are 15
Waste material, its essential element weight percentage be carbon 0.143%, silicon 0.27%, manganese 0.45%, chromium 0.25%, copper 0.25%, institute
Weight is needed to be 970kg；Load weighted carbon steel waste material, ferrosilicon, ferromanganese, ferrochrome, vanadium iron, molybdenum-iron are added into medium-frequency induction furnace.Open
Open intermediate frequency power supply and material in stove is heated to into 1600～1650 DEG C so as to which melting is steel fused solution one.Load weighted ferro-boron is added
Enter in described steel fused solution one so as to fully melt and be uniformly dispersed, obtain steel fused solution two.Load weighted red copper is added into institute
That what is stated obtains in steel fused solution two so as to fully melts and is uniformly dispersed, obtains steel fused solution three；
Pour steel fused solution three into tundish, 0.2kg fine aluminiums rod is added by the molten of the tundish using the method for insertion then
Melt in liquid, carry out deoxidation, obtain steel fused solution four.Steel fused solution four is carried out into granulation using water atomization process and obtains semi-finished product alloy
Shot.Pull described semi-finished product alloy balls from pond out, send into the fluid bed drying oven that thermal source is liquefied gas or natural gas
Flash baking is carried out, the alloy balls dry product that water content is 0.72% (percentage by weight) is obtained.Described alloy balls are done
Product send into continuous-type furnace, and furnace temp is controlled at 830 DEG C, the described alloy balls dry product time of staying in heating furnace
For 35 minutes, Quenching Treatment is carried out using 30 DEG C or so of cold water subsequently, obtain the alloy balls that quench.By described quenching alloy
Shot adds tempering furnace, and at 420 DEG C, the time of staying is 35 minutes to the temperature control of tempering furnace, obtains being tempered alloy balls.By institute
The tempering alloy balls stated carry out cooling process using air-cooled method, then carry out screening and obtain steel casting intensive treatment with resistance to
Mill alloy balls product.
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| CN107760994A (en) * | 2017-11-08 | 2018-03-06 | 刘兴满 | A kind of manufacturing process of pump shell |
| CN107931449A (en) * | 2017-12-14 | 2018-04-20 | 马鞍山新徽铝业有限公司 | A kind of surface treatment method of stamping die |
| CN112962027A (en) * | 2021-02-01 | 2021-06-15 | 建龙北满特殊钢有限责任公司 | Optimized machining method of alloy structural steel |
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