CN103540855A - High-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and preparation method thereof - Google Patents
High-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and preparation method thereof Download PDFInfo
- Publication number
- CN103540855A CN103540855A CN201310507160.0A CN201310507160A CN103540855A CN 103540855 A CN103540855 A CN 103540855A CN 201310507160 A CN201310507160 A CN 201310507160A CN 103540855 A CN103540855 A CN 103540855A
- Authority
- CN
- China
- Prior art keywords
- alloy
- boron
- steel
- wear
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a high-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and a preparation method thereof. The high-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel comprises the following chemical components by weight percentage: 0.20-0.5% of C, 5-12% of Cr, 0.5-1.2% of Si, 3.5-5.5% of Mn, 0.3-2.8% of B, 0.3-2.1% of Cu, 0.2-0.5% of Ti, 0.05-0.25% of Ca, 0.03-0.3% of Ce, 0.02-0.18% of N, 0.05-0.3% of Nb, 0.04-0.09% of Al, 0.1-0.5% of SiMgRe, 0.04-0.13% of K, less than 0.03% of S, less than 0.04% of P and the balance of Fe and inevitable impurity elements. The preparation method comprises the following steps of: adding a copper plate, silicon iron and ferromanganese iron after steel scrap and chromium iron are melted; after the component adjustment before furnace is qualified, increasing the temperature of the melt to 1560-1620 DEG C, adding a calcium-silicon alloy and aluminum for deoxidation, and orderly adding ferrotitanium and ferroboron, melting, and then discharging; putting a composite inoculant composed of granular rare-earth magnesium alloy with granule size being less than 12mm, metal cerium, Si3N4, VN, Nb and K at the bottom of a steel ladle after baking, and performing inoculation treatment on the molten steel by a rush-into-ladle method, wherein the casting temperature of the molten steel ranges from 1400 DEG C to 1450 DEG C; preserving the heat of castings for 4-6 hours at 700-780 DEG C, and then carrying out subcritical air quenching to obtain the alloy steel.
Description
Technical field
The invention belongs to steel material technical field, relate to a kind of casting wear-resistant die steel and preparation method thereof, particularly chromium low-carbon abrasion resistant steel alloy and preparation method thereof in a kind of high tough high boron.
Background technology
The development of modern science and technology is more and more higher to the requirement of material, wearing and tearing are the industrial sector ubiquities such as mine, metallurgy, machinery, electric power, coal, oil, building materials, traffic and become a major reason that causes structure deteriorate or material failure and energy consumption, also be one of three kinds of main failure modes of mechanical component, research and development a new generation high-abrasive material, reduce galling, national economy is had great importance.The metal wear resistant material of at present widespread use mainly contains steel alloy and casting ferrio wear-resistant material, the former good toughness, but there is the deficiency that hardness is low and wear no resistance.Ferrio wear-resistant material can be divided into two large classes, a class be in tissue, contain in large quantities, thick ground, high rigidity ground hard phase (>=5%vol.); Another kind of is in tissue, do not have or only contain marginally hard phase.Because the wear resistance of hard phase is higher than matrix, so hard phase becomes the wear-resisting skeleton of high-abrasive material naturally.Traditional white cast iron is the Typical Representative of this class high-abrasive material.In white cast iron, in tissue, contain the M of the 10%vol. that has an appointment
3c type or M
7c type carbide.Because M
3c type or M
7c type carbide has high rigidity, thereby white cast iron has high-wearing feature.In ferrio wear-resistant material, the hard phase that can be used as wear-resisting skeleton of finding at present mainly contains two large classes, and a class is carbide; Another kind of is boride.At present, people are to usining more as the ferrio wear-resistant material research of wear-resisting skeleton of carbide, and have the more boride of high rigidity and study seldom as the ferrio wear-resistant material of wear-resisting skeleton for usining.Because white cast iron has high rigidity and high-wearing feature, thereby in metal wear resistant material field, still use in a large number at present such material, but such material exists fragility large, in use, easily peel off the even deficiency of cracking, thereby cannot meet the requirement of development of modern industry to high-performance abrasion-proof material.Therefore, exploitation dirt production art is simple, low production cost, intensity and toughness is high, hardening capacity and the good New Generation Steel high-abrasive material of hardenability, replaces now widely used common high-abrasive material under abrasive wear operating mode, and tool is of great significance undoubtedly.
For improving the abrasion resistance of metal wear resistant material, meet application requiring, in recent years, carried out a large amount of research both at home and abroad, developed a large amount of novel high-performance high-abrasive materials.Chinese invention patent CN1039267 discloses a kind of composition and preparation technology thereof of antiwear high-chromium cast iron, the chemical composition of this material (by weight percentage) is: 2.9～3.2%C, 0.4～0.8%Si, 0.4～1.0%Mn, 1.2～2.0%Mo, 18.0～20.0%Cr, 4.0～5.0%V, 0.8～1.2%Cu, 0.05～0.5%RE, P<0.08%, S<0.05%, all the other are iron.This antiwear high-chromium cast iron is compared with common high-abrasive material, have wear-resistant, good mechanical property, thermal treatment process is simple, low power consumption and other advantages is suitable for making the wear-resisting spare part of Working environment harshness.But contain the alloying elements such as more vanadium, molybdenum in this kind of antifriction cast iron, production cost is high, and easy to crack while also existing high-temperature heat treatment, the fragility of material is large, easily peels off the even deficiency such as cracking in use.In order to improve the toughness of high-chromium white cast iron, Chinese invention patent CN1115339 discloses Cr series white cast iron compound inoculant, this nucleating agent is selected when Cr series white cast iron has been solidified to C, Cr, the Fe element of inoculation(effect), by adding Si, Mg, RE alloying element, to change second-phase form and distribution, play the metamorphism to metal melt, in technique, adopted and bred the technological line of being combined with metamorphic facies.Adopt this invention can make the ballistic work of Cr series white cast iron reach 4.5J, make impelling strength improve 60%, fracture toughness property reaches 32MPa.m
1/2, improving 30%, tensile strength reaches 668MPa.But the fragility of this material is still larger, under heavy duty, gouging abrasion operating mode, to use, safe reliability is lower.
The rich element that produces of Peng Shi China, total storage accounts for the 5th, the world.Large quantity research shows, adds appropriate boron in steel, by boron content and carbon content in adjusting alloy, can realize the control to boride percent by volume and matrix carbon content, makes material have excellent wear resistance and obdurability.In white cast iron, add all right refining eutectic carbide of trace B, improve form and the distribution of carbide, improve white cast iron mechanical property.Verified in engineering application, boron adds in structure iron can replace part or all nickel, chromium, manganese, molybdenum etc., in automotive industry, with boron steel, replaces 40Cr steel, is not less than chromium steel its work-ing life.The metal wear resistant material that boron is main alloy element is take in exploitation, make it there is good hardenability and hardening capacity, precious alloy element add-on is few, low production cost, and melting technology is simple, plasticity is good, pollution-free, adopt metal melt to purify and the treatment process that goes bad simultaneously, improve the tissue morphology of boron-containing alloy material, make it there is good obdurability and wear resistance, in high-abrasive material field, will be with a wide range of applications.Chinese invention patent C N1624180 discloses a kind of high boron foundry iron base anti-wear alloy and heat treating method thereof for this reason, the main chemical compositions of this high boron foundry iron base anti-wear alloy (% by weight) is: 0.15～0.70%C, 0.3～1.9%B, 0.4～0.8%Si, 0.6～1.3%Mn, 0.3～0.80%Cr, 0.05～0.25%Ce, 0.02～0.10%La, 0.005～0.018%Ca, 0.04～0.18%K, 0.08～0.25%Al, P<0.04%, S<0.04%, all the other are Fe.This alloy after heat treatment can obtain lath martensite and add the complex tissue that high rigidity boride forms, and make material have good over-all properties, but boride is continuous net-shaped distribution, makes the fragility of material larger.For improving high boron alloy toughness, carried out a large amount of research both at home and abroad.Chinese invention patent CN1804091 discloses the toughening method of casting high-boron wear-resistant alloy, the method is to be by chemical composition: 0.30～0.35%C, 1.0～1.5%B, 0.6～0.8%Si, 0.8～1.0%Mn, P<0.04%, S<0.04%, all the other are Fe, Ti and inevitable impurity element, and wherein Ti is brought into by alterant ferrotianium.Its toughening method is: first by molten steel melting and with after aluminium deoxidation, add the processing of going bad of alterant ferro-titanium, after skimming clearly, change pours into a mould, after casting complete, carry out malleableize thermal treatment, malleableize thermal treatment temp is 1020 ℃～1050 ℃, soaking time is 2～3 hours, then quenches or normalizing, last tempering: alterant ferro-titanium consumption is casting high-boron wear-resistant alloy 0.75～1.0%.The eutectic boride of the sand mold casting high-boron wear-resistant alloy after patent is isolated shape and is distributed in matrix.Because this technique does not become boride into particulate state, be only large block distribution, therefore still exist the fragility of material large, toughness is not too high, is only 12.5J, cannot meet the safe handling under heavy duty, gouging abrasion operating mode.
USSR (Union of Soviet Socialist Republics) patent No. SUl, 447,926 disclosed a kind of " the high boron alloy manufacture method of high strength and high impact toughness ", the chemical composition of this high boron alloy is: 0.2～0.50%C, 2.1～3.5%B, 0.15～0.6%Si, 0.25～0.80%Mn, 0.2～0.80%Sb, in this alloy composition, contain more antimony, will significantly increase the production cost of high boron alloy, and boron-containing quantity is higher, in alloy structure, boride quantity increases, and is unfavorable for the improvement of high boron alloy toughness.
For improving the wear resisting property of rich chromium cast iron, reduce the production cost of rich chromium cast iron, Japanese Patent JP3150334-A, JP93041691-B disclose a kind of boron-containing high-chromium cast iron, its main chemical compositions is: 2.7～3.5%C, 0.2～1.0%Si, 0.5～1.5%Mn, 27～34%Cr, 0.5～2.0%Mo, 0.5～2.0%W ,≤0.1%B, this high boron, high chrome cast iron is after 950～1100 ℃ of normalizings and 200～500 ℃ of tempering, more than hardness reaches 62HRC, shock strength surpasses 0.23.Because boron content is less, in order to improve hardening capacity, therefore in alloy, added 0.5～2.0%Mo, and chrome content is higher, has increased production cost.
For reducing production costs, improve the performance of rich chromium cast iron, Chinese invention patent CN101260497A discloses boron-containing high-chromium abrasion-proof cast iron and manufacture method thereof, the chemical composition that it is characterized in that boron-containing high-chromium abrasion-proof cast iron is (% by weight): 2.5～3.5%C, 15～28%Cr, 0.5～1.2%Si, 0.5～1.2%Mn, 0.15～0.3%B, 0.008～0.03%Ca, 0, 03～0.08%Ba, 0.02～0.05%Sr, 0.03～0.08%Al, 0.20～0.50%Ti, 0.02～0.06%La, 0.02～0.06%Ce, P<0.04%, S<0.04%, all the other are Fe, and 0.05%≤La+Ce≤0.10%, 6.0≤Cr+C≤8.0.The manufacture method of this boron high-chromium abrasion-proof cast iron is: steel scrap, ferrochrome and the pig iron are mixed and puts into stove heat fused, after adding ferrosilicon and ferromanganese adjusting component qualified after molten iron is molten clear, temperature is risen to 1560～1600 ℃, add silicocalcium pre-deoxidation, after pre-deoxidation 1～2 minute, add aluminium final deoxygenation, final deoxygenation is after 1～2 minute, add ferrotianium, ferrotianium added after 1～2 minute, added ferro-boron, and ferro-boron added after 1～2 minute comes out of the stove; Barium silicon alloy, strontium silicon alloy, aluminium, ferrotianium, ferro-boron and mixed rare earth of lanthanum and cerium are crushed to the fritter that granularity is 4～10mm, after 150～180 ℃ of oven dry, be placed in casting ladle bottom, by the method that pours in bag, to molten iron processings of go bad, then the molten iron temperature going bad after processing is poured into foundry goods at 1420～1480 ℃; Poured into a mould foundry goods is carried out to normalizing treatment at 980～1050 ℃ after insulation in 4～6 hours, then at 250～500 ℃, carry out temper, tempering insulation time 8～10 hours, makes boron-containing high-chromium abrasion-proof cast iron.Compared with the prior art this invention has the following advantages: 1. adopt cheap boron to replace the alloying elements such as expensive molybdenum, nickel, improve the hardening capacity of rich chromium cast iron, reduce rich chromium cast iron dirt and produce cost 30～50%.2. adopt the element thinning solidification structures such as mixed rare earth of lanthanum and cerium, titanium, calcium, strontium, barium, aluminium, alleviate element segregation, improve carbide morphology and distribution, improve intensity and the toughness of boron-containing high-chromium abrasion-proof cast iron, wherein tensile strength surpasses 580MPa, and impelling strength is greater than 10J/cm
2, hardness is greater than 62HRC.3. adopt silicon-Ca-alloy For Deoxidation, aluminium final deoxygenation adopts the fixedly nitrogen in iron liquid of titanium simultaneously, has stablized and improved the rate of the receipts of boron, and the rate of the receipts of boron is greater than 92%, than usual way, improves rate that boron receives more than 10%, makes boron-containing high-chromium cast iron stable.4. this boron-containing high-chromium cast iron has excellent wear resistance, has met or exceeded containing molybdenum, nickel high-chromium white cast iron level.But this boron-containing high-chromium abrasion-proof cast iron is due to boron-containing quantity little (0.15～0.3%), and the boride content in alloy is few, makes its wear resisting property still lower; Due to the carbon content in boron-containing high-chromium abrasion-proof cast iron high (2.5～3.5%C), make its toughness lower, under heavy duty, large impact wear working condition, use its poor safety performance; Owing to adopting the processing of go bad of more alloy, cause rotten complex treatment process, cost increase.
Chinese invention patent CN101660097B discloses wear-resisting alloy steel with high boron, high chrome and preparation method thereof, the chemical composition that it is characterized in that wear-resisting alloy steel with high boron, high chrome is (% by weight): 0.10～0.5%C, 3～26%Cr, 0.5～1.2%Si, 0.5～1.5%Mn, 0.3～2.8%B, 0.3-2.6%Cu, 0.2-0.6%Ti, 0.02-0.15%Ca, 0.03-0.25%Ce, 0.02-0.18%N, 0.05～0.3%Nb, 0.04～0.09%Al, 0.02～0.15%Mg, 0.04-0.13%K, S<0.03%, P<0.04%, surplus is Fe and inevitable impurity element.Although this patent is managed, hardness is high, the carbide of wear resistance and the boride of thermally-stabilised good high-content and the chromium with high rigidity of high-content and chromium is as the hard phase of wear resistant alloy, boride is embedded on the martensitic matrix of high tenacity, acquisition has high-strong toughness, high-wearing feature, the low-cost wear-resisting alloy steel with high boron, high chrome of not nickeliferous and molybdenum element.But this material chrome content is high, and cost is high, and the obdurability under high impact stresses operating mode is still not enough, thereby limit has affected this material industryization application.
Although boron-containing high-chromium cast iron has good wear resisting property, but boron add the increase that causes carbide quantity and boride quantity, to cause the toughness drop of high-chromium cast iron alloy, if improve toughness, need to add the expensive alloy element such as molybdenum, nickel, production cost is increased.Therefore,, although boron-containing high-chromium cast iron is all studied, because its intensity and toughness are resolved, cause it to fail to obtain extensive promotion and application at home and abroad always.
As everyone knows, the key that material does not damage under the effect of huge local load is the matrix with good toughness.For this reason, in recent years, carry out the research and development of austenite rich chromium cast iron both at home and abroad, obtained good effect.A metastable austenite matrix high-abrasive material distinguishing feature in use has work hardening ability exactly.During this kind of material work, austenitic matrix can bear local assault, and produce certain drawing hardening effect, under larger surging force or frictional force effect, there is viscous deformation in the austenite base high-abrasive material top layer under metastable state, the austenite in inducing materials surface structure, to martensitic transformation, produces strong work hardening phenomenon, make constantly sclerosis layer by layer of material surface, hardness ratio is increased sharply before using.According to the difference of impact friction energy size, surface hardness approximately improves the individual unit of HRC (5～15).Because strengthening high-abrasive material heart portion, boride particle still keeps all obdurabilities of austenite structure simultaneously, can suppress the expansion effect of crackle, reduce boride particle and strengthened breaking and peeling off tendency of high-abrasive material, especially reduce the degree that boride, carbide rupture and peel off, greatly improved the anti impact wear-proof ability of alloy.Can say, carbide and austenite duplex structure support mutually in wear process, bring out the best in each other.The material with such microstructure can bear severe working conditions.Under suitable working conditions, its resistance to abrasion can meet or exceed the martensite white cast iron of as-heat-treated condition.
Because metastable austenite plastic deformation ability is better, the bonding strength at it and carbide interface is also higher, under shock action, owing to producing dirt work hardening, material surface hardness is improved simultaneously, thereby play, supports and the effect of protection carbide.And martensitic matrix is because deformability is little, resist crack propagation ability, when object is when martensite surface is sent out dirt wearing and tearing, material surface regional area is subject to very large stress, very easily makes crack propagation, very large to hard crisp boride and carbide destruction.Impacting and cutter is cut as easy as rolling off a log generation fatigue flake and brittle flaking off under effect and caused weight loss to increase, at this moment needing to improve the micro-toughness of material, the mitigation ability that increases stress raisers just can improve wear resistance.Therefore,, under gouging abrasion condition, the wear resistance of martensitic matrix material is good not as austenitic matrix.
But, the metastable state of the formed austenitic matrix of casting alloy, different from the residual austenite of carbon steel, it will have certain relative stability, and top layer is easy to deformation induced martensite phase transformation when frictional wear.Meanwhile, this alloy also has higher impelling strength.
What is more important, when the austenite structure of high-abrasive material is during in metastable state, in process of friction and wear, top layer austenitic matrix produces a large amount of dislocations and fault.Dislocation in different slip systems is mutually handed over and is cut, tangles, restricting motion each other, thereby forms dislocation clustering, forms subgrain boundary dislocation wall.And the also martensitic forming core of α martensite and ε ground just of dislocation clustering district and fault district, under frictional stress effect, top layer metastable austenite brings out (α+ε) martensitic transformation in wear process, thereby wear surface be take formation α martensite as main, formation ε martensite be take as main in inferior top layer, surface hardness is greatly improved, is far longer than the hardness that common austenite work hardening reaches.And form one from the negative hardness gradient of the centripetal portion in top layer, strengthened the anti impact wear-proof ability of alloy.In addition, because the austenitic matrix in alloy is in metastable state, when surface, bring out after martensite transformation hardened layer grinds off, austenite below continues to bring out martensite transformation and produces under frictional stress effect.From energy point of view, top layer metastable austenite is strain induced martensite phase transformation in wear process, must absorb and consume portion of energy.Like this, in the distortional strain energy that just causes wearing and tearing to break, some is consumed in this structural transformation, thereby fret wear is reduced, and material wear ability improves.
Summary of the invention
The object of the invention is to solve deficiency of the prior art, provide a kind of high with hardness, wear resistance good, and the moderate chromium containing carbide of the chrome content with high rigidity with high-strong toughness, high boride content is as the hard phase of wear resistant alloy, boride is embedded on the martensitic matrix of high tenacity, acquisition has high-strong toughness, high-wearing feature, low-cost metastable austenite wear-resisting alloy steel with high boron, high chrome and the manufacture method thereof of not nickeliferous and molybdenum element.
For achieving the above object, the present invention can realize by design and the technical scheme of following basic chemical composition:
In a kind of high tough high boron provided by the present invention, chromium low-carbon abrasion resistant steel alloy chemical composition and mass percent thereof are; 0.20～0.5%C, 5～12%Cr, 0.5～1.2%Si, 3.5～5.5%Mn, 0.3～2.8%B, 0.3-2.1%Cu, 0.2-0.5%Ti, 0.05-0.25%Ca, 0.03-0.3%Ce, 0.02-0.18%N, 0.05～0.3%Nb, 0.04～0.09%Al, 0.1～0.5%SiMgRe, 0.04-0.13%K, S<0.03%, P<0.04%, surplus is Fe and inevitable impurity element.
For improving the wear resistance of material, can also in above-mentioned basic chemical composition proportioning, be added with the formed carbide more than at least one or two, nitride, the interpolation molybdenum of boride and carbon-boride, nickel, vanadium, tungsten, their mass percentage content are separately: 0.5～3.0%Mo, 0.50～4.0%W, 0.5～5.0%V, with for making added Mo, W, V alloy element forms carbide and carbon content is brought up to C<0.50～1.1%, in alloy, keep low carbon content, can make metastable austenite wear-resisting alloy steel with high boron, high chrome of the present invention there is good anti-fracture toughness property, thermal fatigue resistance and thermal shock resistance.
Chromium low-carbon abrasion resistant steel alloy and manufacture method thereof in height provided by the present invention is tough high boron, its manufacturing technology steps is:
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1620 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2), when ferrotianium and ferro-boron are all after fusing, particulate state magnesium-rare earth below 12mm and metallic cerium, Si will be less than
3n
4, the composite inoculating nucleating agent that forms of Nb and K wraps with sheet iron, is placed on the bottom of ladle after the temperature baking of 160～200 ℃, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) molten steel of crossing through bag endomorphism inoculation is poured into foundry goods in sand mold or metal mold, or on whizzer, adopt centrifugal composite casting method to pour into skin for chromium low-carbon abrasion resistant steel alloy in high tough high boron, internal layer is the double metallic composite material of cast iron, cast alloy iron, spheroidal graphite cast iron or low alloy steel, 1400～1450 ℃ of melt cast temperature;
(4) after casting finish, at 700～780 ℃ of temperature, be incubated 4-6 hour and carry out subcritical air quenching, substrate degradation is become to the mixture of ferrite and carbide, make its matrix form metastable austenite tissue, and make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, or after machined, foundry goods or workpiece are heat-treated 920～1150 ℃ of insulations for 2-4 hour, make it harden to form metastable austenite, then carry out air cooling to room temperature, to form martensitic microstructure in alloy substrate, the hardness of the material after this thermal treatment process is processed can reach HRC50～65.If needed, the material after thermal treatment can be carried out to temper at 150～200 ℃, tempering insulation time 2-4 hour, with stove air cooling to room temperature, further to adjust hardness.
Beneficial effect
Compared with prior art, tool of the present invention has the following advantages:
1, chromium low-carbon abrasion resistant steel alloy in the tough high boron of height of the present invention, by add austenitizing alloying element manganese in matrix, make it form boracic metastable austenite matrix, formation Cast Austenite tissue, by adopting rotten processing of trace element to make boride group nodularization in iron-boron alloy, make to be originally continuously in Fe-Cr-B alloy structure, the boride M of net distribution
2b changes that isolated group is spherical to be evenly distributed on matrix into, thereby significantly improves the impelling strength of material.Under gouging abrasion condition, austenite structure, because friction deformation produces a large amount of dislocations, the phase transformation of fault strain induced martensite, sharply raises hardness and wear-resistant.And the austenite on inferior top layer is easily deformable, thereby product dirt and the development of fatigue cracking have been slowed down, the degree that has especially reduced boride, carbide fracture and peeled off.Boride, carbide and austenite duplex structure are supported mutually in wear process, bring out the best in each other, thereby make it reach the level of high hardness material and maintain sufficiently high obdurability and the integrated performance index of high impact-resistant wear resistance, antiscour corrosive nature, thereby realizing it in the industrial applications in the inferior high reliability wearing and tearing of HI high impact wear working condition field.
2, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy is owing to adopting cheap boron to replace the alloys such as expensive nickel, molybdenum, and production cost is low, and comparable rich chromium cast iron reduces production costs 30～50%.
3, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy, because carbon content in matrix is extremely low, thereby has higher cold & heat fatigue resisting, anti-fracture toughness property and thermal shock resistance, can meet the requirement of hotwork operating mode to moulding stock.
4, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy, owing to containing a large amount of high rigidity borides, except improving hardening capacity, can significantly improve wear resisting property, and comparable high-chromium white cast iron improves 30～50%.
5, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy, owing to containing 6～12% chromium, except having good antioxidant property, corrosion resistance nature, has reduced material cost greatly.
6, for improving the performance of chromium low-carbon abrasion resistant steel alloy in the tough high boron of height of the present invention, can in matrix steel composition of the present invention, add appropriate molybdenum, nickel, vanadium alloy element, thereby further improved hardenability and the hardness of alloy material, improved softening resistance, wear resisting property under high temperature.
7, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy can adopt common electrosmelting, raw material choose ordinary scrap steel, ferrochrome, copper coin, ferromanganese, ferrosilicon, the direct dirt of ferro-boron produce, and in employing ferrotianium, ferro-niobium, cerium base magnesium-rare earth and nitrogenous substances and basic metal potassium wrap, pour method composite inoculating inoculation.Boride in alloy after rotten processing is isolated spherical being evenly distributed on the martensitic matrix that obdurability is good of group, and impelling strength is significantly improved, and impelling strength ak reaches 10～12J/cm
2, before rotten processing, improving approximately 30%, production technique is easy.
8, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy has good mobility and is cast as performance, can adopt the method moulding such as ordinary sand casting, lost foam casting, dewax precision casting, permanent mold casting and resin bonded sand mould casting, centrifugal composite casting, foundry goods is difficult for being stained with sand, dead head is easy to cleaning, can directly be cast as the product of different shape.
9, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy can quench at 700～780 ℃, makes its matrix form metastable austenite tissue, alloy rigidity is reduced to below 30～35HRC, so that carry out mechanical workout; Can under the temperature within the scope of 920～1150 ℃, heat-treat, make it harden to form metastable austenite, then adopt air cooling sclerosis, to form martensitic stucture in alloy substrate, the material after thermal treatment can also be carried out to temper at 150～200 ℃, make the hardness after alloy sclerosis reach HRC50～65, changes in hardness scope is large, can meet the service requirements of different operating modes, thermal treatment process is simple, with low cost.
10, in the high tough high boron of metastable austenite of the present invention chromium low-carbon abrasion resistant steel alloy have good weldability, can gas cutting performance.
11, in the tough high boron of height of the present invention, chromium low-carbon abrasion resistant steel alloy is applied widely, can widespread use automobile, the required hot-work die such as the pressure die casting in the industrial production such as motorcycle, agricultural machinery and machinofacture, extrusion casting, gravitational casting, forging molding; Be applied to the fields such as metallurgical roller, glass-forming die, slush pump pump case and impeller, welded tube extrusion roll, copper finish forge mould, hot upsetting mould and copper die casting, aluminium die casting, refractory brick forming die, grinder hammerhead, grinding roller, ball grinding machine lining board.High temperature resistant property is good, uses not softening under worst hot case.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1600 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2), when ferrotianium and ferro-boron are all after fusing, particulate state magnesium-rare earth below 12mm and metallic cerium, Si will be less than
3n
4, the composite inoculating nucleating agent that forms of Nb and K wraps with sheet iron, is placed on the bottom of ladle after the temperature baking of 160～200 ℃, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) molten steel of crossing through bag endomorphism inoculation is poured into foundry goods, 1400～1430 ℃ of melt cast temperature in sand mold:
(4) after casting finish, at 700～750 ℃ of temperature, be incubated 4 hours and carry out subcritical annealing, make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, or foundry goods is after mechanical workout, and foundry goods or workpiece are heat-treated 980 ℃ of insulations for 4 hours, makes it harden to form austenite, then carry out air cooling to room temperature, can obtain chromium low-carbon abrasion resistant steel alloy in the preferably high tough high boron of obdurability and wear resistance.Chemical composition is in Table 1.
Table 1 metastable austenite wear-resisting alloy steel with high boron, high chrome chemical composition (weight percent)
Embodiment 2
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1600 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2), when ferrotianium and ferro-boron are all after fusing, particulate state magnesium-rare earth below 12mm and metallic cerium, Si will be less than
3n
4, the composite inoculating nucleating agent that forms of Nb and K wraps with sheet iron, is placed on the bottom of ladle after the temperature baking of 160～200 ℃, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) molten steel of crossing through bag endomorphism inoculation is poured into foundry goods, 1420～1450 ℃ of melt cast temperature in metal mold:
(4) after casting finish, at 700～750 ℃ of temperature, be incubated 5 hours and carry out subcritical annealing, make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, or foundry goods is after mechanical workout, and foundry goods or workpiece are heat-treated 1000 ℃ of insulations for 4 hours, makes it harden to form austenite, then carry out air cooling to room temperature, can obtain chromium low-carbon abrasion resistant steel alloy in the preferably high tough high boron of obdurability and wear resistance.Chemical composition is in Table 2.
Chromium low-carbon abrasion resistant steel alloy chemical composition (weight percent) in the high tough high boron of table 2
| Element | C | B | Ti | Cr | Cu | Si | Mn | Nb |
| Content | 0.25 | 1.89 | 0.35 | 18.0 | 0.95 | 0.90 | 3.8 | 0.15 |
| Element | SiMgRe | Ce | K | N | Ca | Al | Fe | ? |
| Content | 0.4 | 0.14 | 0.08 | 0.12 | 0.07 | 0.1 | Surplus | ? |
Embodiment 3
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1600 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2), when ferrotianium and ferro-boron are all after fusing, particulate state magnesium-rare earth below 12mm and metallic cerium, Si will be less than
3n
4, the composite inoculating nucleating agent that forms of Nb and K wraps with sheet iron, is placed on the bottom of ladle after the temperature baking of 160～200 ℃, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) molten steel of crossing through bag endomorphism inoculation being adopted on whizzer centrifugal composite casting method pour into outer is wear-resisting alloy steel with high boron, high chrome, internal layer is metallurgical roller or other double metallic composite material of cast iron, cast alloy iron, spheroidal graphite cast iron or low alloy steel, 1400～450 ℃ of melt cast temperature;
(4) after casting finish, at 700～750 ℃ of temperature, be incubated 6 hours and carry out subcritical annealing, substrate degradation is become to the mixture of ferrite and carbide, make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, or foundry goods is after mechanical workout, foundry goods or workpiece are heat-treated 1050 ℃ of insulations for 4 hours, make it harden to form austenite, then carry out air cooling to room temperature, can obtain obdurability and wear resistance outer is preferably chromium low-carbon abrasion resistant steel alloy double metallic composite material in high tough high boron.Chemical composition is in Table 3.
Chromium low-carbon abrasion resistant steel alloy chemical composition (weight percent) in the high tough high boron of table 3
| Element | C | B | Ti | Cr | Cu | Si | Mn |
| Content | 0.29 | 1.98 | 0.35 | 17.5 | 0.48 | 1.0 | 4.2 |
| Element | Nb | SiMgRe | Ce | K | N | Ca | Fe |
| Content | 0.1 | 0.3 | 0.17 | 0.1 | 0.1 | 0.06 | Surplus |
Embodiment 4
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese, molybdenum-iron, ferronickel after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1620 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2) after ferrotianium and the whole fusings of ferro-boron, by being less than the composite inoculating nucleating agent that particulate state magnesium-rare earth below 12mm and metallic cerium, VN, Nb and K form, with sheet iron, wrap, after the temperature baking of 160～200 ℃, be placed on the bottom of ladle, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) molten steel of crossing through the inoculation that goes bad in bag being adopted on whizzer centrifugal composite casting method pour into outer is wear-resisting alloy steel with high boron, high chrome, internal layer is the double metallic composite material of cast iron, cast alloy iron, spheroidal graphite cast iron or low alloy steel, 1400～1450 ℃ of melt cast temperature;
(4) after casting finish, at 700～750 ℃ of temperature, be incubated 6 hours and carry out subcritical annealing, substrate degradation is become to the mixture of ferrite and carbide, make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, carry out mechanical workout, workpiece after foundry goods or processing is heat-treated 1050 ℃ of insulations for 2-4 hour, then carry out air cooling to room temperature, again the workpiece after thermal treatment is carried out to temper at 150～180 ℃, tempering insulation time 4 hours, to room temperature, can obtain chromium low-carbon abrasion resistant steel alloy in the preferably high tough high boron of obdurability and wear resistance with stove air cooling.Chemical composition is in Table 4.
Chromium low-carbon abrasion resistant steel alloy chemical composition (weight percent) in the high tough high boron of table 4
Embodiment 5
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese, molybdenum-iron, ferronickel, ferrotungsten after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1620 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2) after ferrotianium and the whole fusings of ferro-boron, by after being less than composite inoculating nucleating agent that particulate state magnesium-rare earth below 12mm and metallic cerium, VN, Nb and K form and wrapping with sheet iron, after the temperature baking of 160～200 ℃, be placed on the bottom of ladle, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) will in the molten steel sand mold of crossing through the inoculation that goes bad in bag, pour into foundry goods, or on whizzer, adopt centrifugal composite casting method to pour into skin for wear-resisting alloy steel with high boron, high chrome, internal layer is the double metallic composite material of cast iron, cast alloy iron, spheroidal graphite cast iron or low alloy steel, 1400～1450 ℃ of teeming temperatures;
(4) after casting finish, at 700～750 ℃ of temperature, be incubated 6 hours and carry out subcritical annealing, substrate degradation is become to the mixture of ferrite and carbide, make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, carry out mechanical workout, workpiece after foundry goods or processing is heat-treated 1050 ℃ of insulations for 2-4 hour, then carry out air cooling to room temperature, again the workpiece after thermal treatment is carried out to temper at 150～180 ℃, tempering insulation time 4 hours, to room temperature, can obtain chromium low-carbon abrasion resistant steel alloy in the preferably high tough high boron of obdurability and wear resistance with stove air cooling.Chemical composition is in Table 5, and the mechanical property of cast steel is in Table 10.
Table 5 metastable austenite wear-resisting alloy steel with high boron, high chrome chemical composition (weight percent)
| Element | C | B | Ti | Cr | Cu | Si | Mn | Nb | SiMgRe | Ce |
| Content | 0.86 | 2.45 | 0.38 | 4.3 | 0.75 | 1.20 | 3.9 | 0.13 | 0.09 | 0.14 |
| Element | K | N | Ca | Mo | Ni | V | W | Al | Fe | ? |
| Content | 0.08 | 0.07 | 0.02 | 2.0 | 1.1 | 1.2 | 2.5 | 0.09 | Surplus | ? |
Get the metallurgical roller of chromium low-carbon abrasion resistant steel alloy making in the high tough high boron of the present invention for rolling concrete steel bar, angle steel, improve work-ing life more than one times than bainite ductile iron roll its work-ing life; Adopt the mould for glass bottle that metastable austenite wear-resisting alloy steel with high boron, high chrome of the present invention is made to improve and improve 4-6 work-ing life doubly than the mould that adopts common nickel-boron alloy to make; Adopt metastable austenite the wear-resisting alloy steel with high boron, high chrome of the present invention cast aluminium of making and wear-resisting, the heat-resisting workpiece such as brake facing of casting magnesium die and automobile, the high 0.5-1 of material that all used at present its work-ing life doubly.Material of the present invention is applied has significant economic and social benefit.
Claims (3)
1. chromium low-carbon abrasion resistant steel alloy and preparation method thereof in one kind high tough high boron, chemical composition and the weight percent thereof of the steel alloy under it is characterized in that are: 0.20～0.5%C, 5～12%Cr, 0.5～1.2%Si, 3.5～5.5%Mn, 0.3～2.8%B, 0.3-2.1%Cu, 0.2-0.5%Ti, 0.05-0.25%Ca, 0.03-0.3%Ce, 0.02-0.18%N, 0.05～0.3%Nb, 0.04～0.09%Al, 0.1～0.5%SiMgRe, 0.04-0.13%K, S<0.03%, P<0.04%, surplus is Fe and inevitable impurity element.
2. chromium low-carbon abrasion resistant steel alloy and preparation method thereof in the tough high boron of height according to claim 1, is characterized in that, comprises following processing step:
(1) steel scrap, ferrochrome are melted in electric furnace, molten steel adds copper coin, ferrosilicon, ferromanganese after melting clearly, control carbon content and reach requirement, after stokehold adjusting component is qualified, melt temperature is increased to 1560～1620 ℃, add silicocalcium to carry out pre-deoxidation, add aluminium final deoxygenation, then sequentially add ferrotianium and ferro-boron fusing;
(2), when ferrotianium and ferro-boron are all after fusing, particulate state magnesium-rare earth below 12mm and metallic cerium, Si will be less than
3n
4, the composite inoculating nucleating agent that forms of Nb and K wraps with sheet iron, is placed on the bottom of ladle after the temperature baking of 160～200 ℃, by the method that pours in wrapping to the molten steel of the having smelted inoculation that goes bad;
(3) molten steel of crossing through bag endomorphism inoculation is poured into foundry goods in sand mold or metal mold, or on whizzer, adopt centrifugal composite casting method to pour into skin for chromium low-carbon abrasion resistant steel alloy in high tough high boron, internal layer is the double metallic composite material of cast iron, cast alloy iron, spheroidal graphite cast iron or low alloy steel, 1400～1450 ℃ of melt cast temperature;
(4) after casting finish, at 700～780 ℃ of temperature, be incubated 4-6 hour and carry out subcritical air quenching, substrate degradation is become to the mixture of ferrite and carbide, make its matrix form metastable austenite tissue, and make its lower hardness to 30～35HRC, so that carry out mechanical workout;
(5) after casting finish, or after machined, foundry goods or workpiece are heat-treated 920～1150 ℃ of insulations for 2-4 hour, make it harden to form metastable austenite, then carry out air cooling to room temperature, to form martensitic microstructure in alloy substrate, the hardness of the material after this thermal treatment process is processed can reach HRC50～65.If needed, the material after thermal treatment can be carried out to temper at 150～200 ℃, tempering insulation time 2-4 hour, with stove air cooling to room temperature, further to adjust hardness.
3. chromium low-carbon abrasion resistant steel alloy and preparation method thereof in the tough high boron of height according to claim 1, it is characterized in that can also being added with in the basic chemical composition of the steel alloy in claim 1 interpolation molybdenum, nickel, vanadium, the tungsten of formed carbide, nitride, boride and carbon-boride more than at least one or two, their weight percent contents are separately: 0.5～3.0%Mo, 0.50～4.0%W, 0.5～5.0%V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310507160.0A CN103540855A (en) | 2013-10-25 | 2013-10-25 | High-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310507160.0A CN103540855A (en) | 2013-10-25 | 2013-10-25 | High-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103540855A true CN103540855A (en) | 2014-01-29 |
Family
ID=49964697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310507160.0A Pending CN103540855A (en) | 2013-10-25 | 2013-10-25 | High-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103540855A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882342A (en) * | 2014-04-10 | 2014-06-25 | 江苏新亚特钢锻造有限公司 | Boron-containing abrasion-resistant material for roller remanufacturing and preparation technique thereof |
| CN103993239A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Mine wet mill liner and making method thereof |
| CN104060178A (en) * | 2014-06-24 | 2014-09-24 | 广东省工业技术研究院(广州有色金属研究院) | Bowl mill liner plate material and preparation method thereof |
| CN104131234A (en) * | 2014-05-04 | 2014-11-05 | 洛阳金合耐磨材料有限公司 | Material special for large ball mill lining board and preparation method thereof |
| CN104589501A (en) * | 2015-02-09 | 2015-05-06 | 张鑫杰 | Mixing drum of concrete mixer with alloy material |
| CN104630636A (en) * | 2015-02-06 | 2015-05-20 | 铜陵百荣新型材料铸件有限公司 | Low-carbon cast steel and preparation method thereof |
| CN104694825A (en) * | 2015-02-06 | 2015-06-10 | 铜陵百荣新型材料铸件有限公司 | Corrosion-resistant cast high-carbon steel and preparation method thereof |
| CN105312541A (en) * | 2015-11-12 | 2016-02-10 | 丹阳恒庆复合材料科技有限公司 | Improved technique and device for manufacturing nickel-chromium molybdenum alloy cast iron composite roller in forged steel roller neck |
| CN105328168A (en) * | 2015-11-12 | 2016-02-17 | 丹阳恒庆复合材料科技有限公司 | Manufacturing process and equipment for nickel-chromium-molybdenum alloy cast iron composite roller in forged steel roller neck |
| CN105385957A (en) * | 2015-11-13 | 2016-03-09 | 丹阳嘉伟耐磨材料科技有限公司 | Impact-resistant high-boron medium-chromium abrasion-resistant alloy and preparing method thereof |
| CN105397067A (en) * | 2015-11-11 | 2016-03-16 | 丹阳恒庆复合材料科技有限公司 | Manufacturing technology and device of forged steel roller neck alloy nodular cast iron composite roller |
| CN105436474A (en) * | 2015-11-12 | 2016-03-30 | 丹阳恒庆复合材料科技有限公司 | Manufacturing technique and device for improved bainite nodular cast iron composite roller provided with forged steel roller neck |
| CN106480382A (en) * | 2016-12-04 | 2017-03-08 | 丹阳市宸兴环保设备有限公司 | A kind of wear resistant and impact resistant metal material and preparation method thereof |
| CN106807938A (en) * | 2017-02-11 | 2017-06-09 | 丹阳惠达模具材料科技有限公司 | The preparation method of alloy cold work die steel base steel bonded carbide in a kind of VC |
| CN108085610A (en) * | 2017-11-24 | 2018-05-29 | 成都六惠科技有限公司 | Chromium alloyed steel and its preparation process in a kind of high-carbon |
| CN108300947A (en) * | 2017-12-20 | 2018-07-20 | 柳州科瑞科技有限公司 | A kind of high-strength die material and preparation method thereof |
| CN108754306A (en) * | 2018-05-24 | 2018-11-06 | 江苏大学 | A kind of high-intensity and high-tenacity antifriction alloy and preparation method thereof |
| CN108914021A (en) * | 2018-07-30 | 2018-11-30 | 西安科技大学 | A kind of anti-abrasive wear alloy of Fe-Cr-B-C and preparation method thereof |
| CN109972052A (en) * | 2018-06-08 | 2019-07-05 | 中南大学 | A kind of strontium goes bad high hard alloy and its casting and heat treatment method |
| CN113953452A (en) * | 2021-10-18 | 2022-01-21 | 马鞍山市方圆材料工程股份有限公司 | Smelting precision casting process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0141804A1 (en) * | 1983-10-14 | 1985-05-15 | Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) | Hadfield type manganese steel and process for the manufacture thereof |
| CN101624678A (en) * | 2009-08-14 | 2010-01-13 | 江苏新亚特钢锻造有限公司 | High-toughness boride abrasion resisting metal material and manufacture technology thereof |
| CN101660097A (en) * | 2009-08-13 | 2010-03-03 | 丁家伟 | Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof |
| CN102925820A (en) * | 2012-10-25 | 2013-02-13 | 北京工业大学 | Aluminum-containing high-boron high-speed steel roller material and smelting method thereof |
-
2013
- 2013-10-25 CN CN201310507160.0A patent/CN103540855A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0141804A1 (en) * | 1983-10-14 | 1985-05-15 | Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) | Hadfield type manganese steel and process for the manufacture thereof |
| CN101660097A (en) * | 2009-08-13 | 2010-03-03 | 丁家伟 | Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof |
| CN101624678A (en) * | 2009-08-14 | 2010-01-13 | 江苏新亚特钢锻造有限公司 | High-toughness boride abrasion resisting metal material and manufacture technology thereof |
| CN102925820A (en) * | 2012-10-25 | 2013-02-13 | 北京工业大学 | Aluminum-containing high-boron high-speed steel roller material and smelting method thereof |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882342A (en) * | 2014-04-10 | 2014-06-25 | 江苏新亚特钢锻造有限公司 | Boron-containing abrasion-resistant material for roller remanufacturing and preparation technique thereof |
| CN103993239A (en) * | 2014-04-23 | 2014-08-20 | 中建材宁国新马耐磨材料有限公司 | Mine wet mill liner and making method thereof |
| CN104131234A (en) * | 2014-05-04 | 2014-11-05 | 洛阳金合耐磨材料有限公司 | Material special for large ball mill lining board and preparation method thereof |
| CN104060178A (en) * | 2014-06-24 | 2014-09-24 | 广东省工业技术研究院(广州有色金属研究院) | Bowl mill liner plate material and preparation method thereof |
| CN104060178B (en) * | 2014-06-24 | 2017-02-08 | 广东省材料与加工研究所 | Bowl mill liner plate material and preparation method thereof |
| CN104694825B (en) * | 2015-02-06 | 2017-01-11 | 铜陵百荣新型材料铸件有限公司 | Corrosion-resistant cast high-carbon steel and preparation method thereof |
| CN104630636A (en) * | 2015-02-06 | 2015-05-20 | 铜陵百荣新型材料铸件有限公司 | Low-carbon cast steel and preparation method thereof |
| CN104694825A (en) * | 2015-02-06 | 2015-06-10 | 铜陵百荣新型材料铸件有限公司 | Corrosion-resistant cast high-carbon steel and preparation method thereof |
| CN104589501A (en) * | 2015-02-09 | 2015-05-06 | 张鑫杰 | Mixing drum of concrete mixer with alloy material |
| CN105397067B (en) * | 2015-11-11 | 2018-01-16 | 丹阳恒庆复合材料科技有限公司 | Forged steel roll neck alloy nodular cast iron composite roll manufacturing process and equipment |
| CN105397067A (en) * | 2015-11-11 | 2016-03-16 | 丹阳恒庆复合材料科技有限公司 | Manufacturing technology and device of forged steel roller neck alloy nodular cast iron composite roller |
| CN105312541A (en) * | 2015-11-12 | 2016-02-10 | 丹阳恒庆复合材料科技有限公司 | Improved technique and device for manufacturing nickel-chromium molybdenum alloy cast iron composite roller in forged steel roller neck |
| CN105328168A (en) * | 2015-11-12 | 2016-02-17 | 丹阳恒庆复合材料科技有限公司 | Manufacturing process and equipment for nickel-chromium-molybdenum alloy cast iron composite roller in forged steel roller neck |
| CN105436474A (en) * | 2015-11-12 | 2016-03-30 | 丹阳恒庆复合材料科技有限公司 | Manufacturing technique and device for improved bainite nodular cast iron composite roller provided with forged steel roller neck |
| CN105385957A (en) * | 2015-11-13 | 2016-03-09 | 丹阳嘉伟耐磨材料科技有限公司 | Impact-resistant high-boron medium-chromium abrasion-resistant alloy and preparing method thereof |
| CN106480382A (en) * | 2016-12-04 | 2017-03-08 | 丹阳市宸兴环保设备有限公司 | A kind of wear resistant and impact resistant metal material and preparation method thereof |
| CN106807938A (en) * | 2017-02-11 | 2017-06-09 | 丹阳惠达模具材料科技有限公司 | The preparation method of alloy cold work die steel base steel bonded carbide in a kind of VC |
| CN108085610A (en) * | 2017-11-24 | 2018-05-29 | 成都六惠科技有限公司 | Chromium alloyed steel and its preparation process in a kind of high-carbon |
| CN108300947A (en) * | 2017-12-20 | 2018-07-20 | 柳州科瑞科技有限公司 | A kind of high-strength die material and preparation method thereof |
| CN108754306A (en) * | 2018-05-24 | 2018-11-06 | 江苏大学 | A kind of high-intensity and high-tenacity antifriction alloy and preparation method thereof |
| CN108754306B (en) * | 2018-05-24 | 2020-06-09 | 江苏大学 | High-strength high-toughness wear-resistant alloy and preparation method thereof |
| CN109972052A (en) * | 2018-06-08 | 2019-07-05 | 中南大学 | A kind of strontium goes bad high hard alloy and its casting and heat treatment method |
| CN108914021A (en) * | 2018-07-30 | 2018-11-30 | 西安科技大学 | A kind of anti-abrasive wear alloy of Fe-Cr-B-C and preparation method thereof |
| CN113953452A (en) * | 2021-10-18 | 2022-01-21 | 马鞍山市方圆材料工程股份有限公司 | Smelting precision casting process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103540855A (en) | High-toughness high-boron medium-chrome low-carbon wear-resisting alloy steel and preparation method thereof | |
| CN103556064A (en) | Metastable austenite high-boron high-chrome low-carbon wear-resisting alloy steel and preparation method thereof | |
| CN101660097B (en) | Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof | |
| CN100485075C (en) | High-carbon high-vanadium high-speed steel composite roller and heat treatment method thereof | |
| CN103498107A (en) | High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof | |
| CN100434558C (en) | High-boron cast steel containing granular boride and preparing method thereof | |
| CN101775558B (en) | Fe-Cr-B cast abrasion-resistant alloy and manufacturing method thereof | |
| CN103572166A (en) | Boracic high-speed steel with good red hardness and preparation method thereof | |
| CN100532619C (en) | High-boron low-carbon abrasion resistant cast steel and heat treatment method thereof | |
| CN102383066B (en) | Abrasion resistant cast steel and preparation method thereof | |
| CN105296871A (en) | High-tenacity boron containing die steel and preparing method thereof | |
| CN102242316B (en) | H13 die steel and preparation method thereof | |
| CN1328406C (en) | Martensite wear resistant cast steel with film austenic toughened and its manufacturing method | |
| CN105316590A (en) | High-tenacity boron-containing high-speed steel and preparation method thereof | |
| CN103498108A (en) | High-boron high-chromium low-carbon wear-resisting alloy steel with good red hardness and manufacturing method thereof | |
| CN105385949A (en) | Boracic wear-resisting alloy steel and preparation method thereof | |
| CN105316589A (en) | High-tenacity boron-containing high-chromium abrasion-resistant alloy and preparation method thereof | |
| CN100999803A (en) | High boron wear-resisting casting steel and preparation process thereof | |
| CN1775983A (en) | High-strength casted air-colled bainite wear-resisting steel and preparing method | |
| CN105420619A (en) | Duplex-metal composite high-toughness high-boron abrasion-resistant steel hammerhead and preparation method thereof | |
| CN101550518A (en) | Boron-containing multi-element low alloy wear resistant cast steel and preparing method thereof | |
| CN101624678A (en) | High-toughness boride abrasion resisting metal material and manufacture technology thereof | |
| CN104087822A (en) | Grinding body for high-performance ball mill | |
| CN102234734B (en) | Production process of modified alloy ball iron roller | |
| CN105296872A (en) | Bimetal composite high-tenacity, high-boron and high-chrome steel hammer and preparing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Ding Jiawei Document name: Notification to Make Formalities Rectification |
|
| CB02 | Change of applicant information |
Address after: 212322 Zhenjiang City, Jiangsu city of Danyang province Dan Beizhen Gaoqiao village Danyang Hengqing composite Mstar Technology Ltd Applicant after: Ding Jiawei Address before: 212322 Danyang Xinqiao industrial building, Jiangsu New Asia Special Steel Forging Co., Ltd., Jiangsu, China Applicant before: Ding Jiawei |
|
| COR | Change of bibliographic data | ||
| CB02 | Change of applicant information |
Address after: Tianfu garden 212300 Zhenjiang city of Jiangsu Province, Danyang City Development Zone Building 4 unit 502 room Applicant after: Ding Jiawei Address before: 212322 Zhenjiang City, Jiangsu city of Danyang province Dan Beizhen Gaoqiao village Danyang Hengqing composite Mstar Technology Ltd Applicant before: Ding Jiawei |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140129 |