CN108707842A - A kind of Ni hardening high hardness wear-resisting alloy and its casting method - Google Patents

A kind of Ni hardening high hardness wear-resisting alloy and its casting method Download PDF

Info

Publication number
CN108707842A
CN108707842A CN201810589929.0A CN201810589929A CN108707842A CN 108707842 A CN108707842 A CN 108707842A CN 201810589929 A CN201810589929 A CN 201810589929A CN 108707842 A CN108707842 A CN 108707842A
Authority
CN
China
Prior art keywords
casting
ferro
alloy
temperature
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.)
Withdrawn
Application number
CN201810589929.0A
Other languages
Chinese (zh)
Inventor
罗丰华
吴若晴
熊落保
周海铭
杨昊
卢静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central South University
Original Assignee
Central South University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Central South University filed Critical Central South University
Priority to CN201810589929.0A priority Critical patent/CN108707842A/en
Publication of CN108707842A publication Critical patent/CN108707842A/en
Priority to CN201910431576.6A priority patent/CN110029288A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C22C33/06—Making ferrous alloys by melting using master alloys
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Golf Clubs (AREA)

Abstract

A kind of Ni hardening high hardness wear-resisting alloy and its casting method, the mass percentage of each element is Cr in alloy：9.0~13.0, B：2.6~2.9, C：0.7~0.9, Ni：0.6~1.5%, Nb：0.4~0.8, V：0.4~0.8, Mn are less than 0.3, Si and are less than 0.07, surplus Fe.After weighing good corresponding raw material according to component requirements proportioning, alloy, 1550~1650 DEG C of fusion temperature are prepared using induction furnace melting；Then furnace power is reduced, after melt temperature is down to 1300~1350 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.1~0.15%；Continue heat preservation about 5~10 minutes, cast alloys.Ingot casting average hardness HRC68.8~70.9 prepared by the present invention, 10.2~13.8J/cm of impact flexibility2, 910~1021MPa of bending strength.

Description

A kind of Ni hardening high hardness wear-resisting alloy and its casting method
Technical field
The invention belongs to high-hardness and wear-resistant cast-iron fields, are related to a kind of containing ultra-fine hard phase and supersaturated solid solution, geneva The alloy and its component preparation method of the wear and corrosion resistant cast iron of body matrix phase, can be widely used for electric power, metallurgy, machinery, chemical industry etc. Mechanical wearing piece manufacture in industry.
Technical background
Fe-Cr-B-C abrasion resistant casting alloys are with Fe2B or M2B hard phases are hard phase, have good toughness and height hard Degree, high corrosion-resistant, melting-casting manufacturability is good, has very wide application prospect.
Patent document 1：The antifriction alloy hardness of 105695884 B of Authorization Notice No. CN, preparation are HRC66~70, impact 4~9J/cm of toughness2.The hardness of such alloy is higher, but impact flexibility is insufficient, and intensity index is relatively low, and bending strength is relatively low, 346~477MPa ranges, therefore limit the occasion that the Alloyapplication is big in some external loads, impact resistance is needed to act on.
Document 2：The rapid cooling organization and performance of eutectic Fe-Cr-B-C alloys, casting, 2017,66 (10):1053~1056. The rapid cooling tissue of as cast condition Fe-Cr-B-C alloys by martensite+retained austenite matrix and along the continuous net-shaped distribution of crystal boundary (Fe, Cr)2(B,C)+(Fe,Cr)23(B,C)6Hard phase composition.The microhardness of rapid cooling tissue matrix phase is 800~880HV, hard Phase microhardness is 1150~1400HV, macrohardness HRC68, and impact flexibility reaches 13.6J/cm2；And through 960 DEG C × 2h After annealing, matrix is changed into ferrite and nodular cementite, hard phase (Fe, Cr)2(B, C) and (Fe, Cr)23(B,C)6It is few There is suspension, cenotype (Fe, Cr) occur in amount dissolving, regional area3(B, C), after annealing matrix phase microhardness be 330~ 400HV, hard phase are 850~1250HV, and macrohardness is reduced to HRC46, and impact flexibility is reduced to 3.4J/cm2。
2 acquired results of document reflect that the hardness of matrix phase plays significant role to the hardness and impact flexibility of such material； Patent document 1 is compared, such alloy also has the possibility promoted in aspect of performance such as impact flexibility.
Invention content
The object of the present invention is to provide a kind of Ni hardening high hardness wear-resisting alloys and its casting methods, and the alloy is with Fe2B or M2B is hard phase, and matrix is the non-equilibrium phases such as the polynary supersaturated solid solution of high rigidity of Ni elements hardening, martensite, is had good Good toughness, high rigidity and higher intensity index, melting, casting and heat treatment process are good, have very wide application Foreground.
High-wearing feature that the present invention selects, high corrosion-resistant Fe-Cr-B-C alloys are basic alloy, then add 0.6~1.5% Ni elements.The multi-element eutectic alloy containing elements such as Fe, Cr, B, C, Nb, V, Ni is formed, the mass percentage of each element is Cr： 9.0~13.0, B：2.6~2.9, C：0.7~0.9, Ni：0.6~1.5%, Nb：0.4~0.8, V：The content of 0.4~0.8, Mn Content less than 0.3, Si is less than 0.07, S, P：≤ 0.01, surplus Fe.Wherein C, B gross mass percentage composition are：3.3~ 3.6；C/Cr mass ratioes：0.06~0.08；The gross mass percentage composition of Nb, V is：0.5~1.0.
Ni elements are the solution strengthening elements of steel, can be infinitely dissolved with Fe, and expand austenite phase field.Ni not with C Compound is formed, does not also work with B, can be simultaneously solid-solubilized in Fe matrixes with Cr.It can reinforced ferrite, refinement pearlite.Often Nickel content can just play the role of the quenching degree and temper resistance of steel apparent more than 1.0% in rule steel.Sinter-hardened Steel, i.e., during (about 60 DEG C/min) can lead to the alloy of martensitic traoformation under general industry furnace cooling but velocity conditions, Ni's Content is about 1.5~3.0%.But Ni too high levels can cause martensitic transformation temperature to decline.Therefore, it is hard that Ni elements are introduced When alloy, the content of Ni is unsuitable excessively high.Since there are a large amount of Fe in the present invention2B or M2B is hard phase, shared by matrix phase Volume ratio be about 50~60%, and the Ni being added mainly is dissolved in matrix phase, therefore Ni contents should be controlled 0.6~1.5%.
Referring to patent document 1, it is specific prepare alloy when, can be used ferrochrome (high-carbon, middle carbon, micro- carbon), ferro-boron, ferro-niobium, Vanadium iron, metallic nickel and pure iron etc. are according to component requirements dispensing.Raw material and its composition are listed in table 1.
Table 1 can be applied to prepare the raw material and composition of invention alloy
The material composition of table 1 is not unique, and specific ingredient raw material obtained by reality determine.Wherein ferrochrome, Crome metal, ferro-boron, ferro-niobium and vanadium iron provide the content of Cr, B, Nb and V of invention alloy, and high carbon ferro-chrome is used for balancing C content.It is pure Iron can be electrical pure iron, electromagnetic pure iron or ingot iron.
Specific melting is with casting technique：
After weighing good corresponding raw material according to component requirements proportioning, induction furnace, vaccum sensitive stove etc. can be used and carry out melting system Standby alloy.Ferrochrome, crome metal, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and pure iron are melted first, fusion temperature higher than 1550~ 1650 DEG C so that pure iron, metallic nickel and crome metal fully melt；Then furnace power is reduced, melt temperature is down to 1300~ After 1350 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.1~0.15%；Continue heat preservation about 5~10 minutes, rapid cast alloys are poured It is 1250~1300 DEG C to cast temperature range.
Since designed alloy is eutectic composition, melt has good mobility fine, can be by various methods Casting and forming, as normal sands Mold casting or model casting, lost foam casting, permanent mold casting, ceramic mold casting, die casting, The special casting method such as centrifugal casting.
Designed alloy has deep eutectic ingredient, and non-equilibrium matrix group can be formed under the conditions of common sand casting It knits, such as amorphous, nanocrystalline or martensitic structure.In order to promote matrix that non-equilibrium transformation occurs, from setting temperature to 600 DEG C Cooling velocity should be not less than 60 DEG C/min, can pass through in water cooling, swage, mold and place the means such as chill and realize.But due to hair Raw non-equilibrium transformation can cause volume change, lead to stress cracking phenomenon since temperature is inconsistent when preparing heavy castings, because This, casting should release the constraint of mold between 600~800 DEG C.
Stress relief annealing technique and necessary machining processes less than 600 DEG C subsequently can be used in ingot casting.
The present invention's is mainly characterized by by multi-element alloyed, forms deep eutectic ingredient, and fusing point is low, good fluidity, casting It is simple to make technological requirement.The matrix of ingot structure is mutually the non-equilibrium microstructure that Cr, B, C, Ni with high rigidity strengthen, hard phase Boron, carbon compound for high rigidity, due to Ni to the further solution strengthening effect of matrix phase, reduce martensitic transformation temperature and Promote the effect of martensitic traoformation so that martensitic phase refinement, hardness improve, so that answering between hard phase and matrix phase Power-strain is coordinated, and under the premise of hardness slightly improves, the impact flexibility and bending strength of alloy improve.Ingot casting is average Hardness reaches HRC68.8~70.9, and impact flexibility reaches 10.2~13.8J/cm2, bending strength reaches 910~1021MPa.
Description of the drawings
1 cast sturcture of Fig. 1 present examples schemes；
The EDS collection of illustrative plates and ingredient of 4 casting hard phase of Fig. 2 present examples；
The EDS collection of illustrative plates and ingredient of 4 casting matrix phase of Fig. 3 present examples.
Specific implementation mode
The various method of smelting of the present invention, casting method are not limited by following examples, and any right in the present invention is wanted The improvement in range and variation for asking book claimed are all within protection scope of the present invention.
It is raw material to select high carbon ferro-chrome, chromic carbide iron, crome metal, ferro-boron, ferro-niobium, vanadium iron, ingot iron, metallic nickel etc., It is configured to alloy in the composition range that invention requires.
It is raw material that embodiment 1., which selects high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron, Composition range is as follows：Cr:10.0wt.%；B:2.9wt.%；C:0.7wt.%；Ni:0.6wt.%；Nb:0.4wt.%；V: 0.2wt.%；Impurity element control is shown in Table 2.
After weighing good corresponding raw material according to component requirements proportioning, using induction melting and sand mold die cast.Specific steps For：
First by high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron, fusion temperature is 1650℃；Then furnace power is reduced, after melt temperature is down to 1300 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.15%；After Continuation of insurance temperature about 5 minutes, rapid cast alloys, ranging from 1250 DEG C of cast temperature.
About 6 minutes after having cast, open sand mould, at this time ingot casting temperature be less than 800 DEG C, from setting temperature to 800 DEG C it Between cooling rate be about 70 DEG C/min.It is air-cooled to room temperature.
Ingot casting fractograph is shown in Fig. 1, substantially duplex structure, and fine microstructures are uniform, is eutectic structure.Matrix mutually occurs A large amount of squares, hard phase are in mutually that eutectic is precipitated with matrix, and continuous network structure does not occur in hard phase.It can be seen that Ni elements The reticular structure for being conducive to destroy hard phase, can greatly improve the toughness and intensity of material.
Gained ingot casting average hardness reaches HRC68.8, and impact flexibility reaches 13.8J/cm2, bending strength reaches 1021MPa。
It is raw material, composition range that embodiment 2., which selects high carbon ferro-chrome, crome metal, ferro-boron, ferro-niobium, metallic nickel and ingot iron, It is as follows：Cr:10.0wt.%；B:2.7wt.%；C:0.7wt.%；Ni:0.9wt.%；Nb:0.5wt.%；Impurity element controls It is shown in Table 2.
After weighing good corresponding raw material according to component requirements proportioning, vacuum induction melting and the casting of water cooling swage can be used It makes.The specific steps are：
First by high carbon ferro-chrome, crome metal, ferro-boron, ferro-niobium, metallic nickel and ingot iron, fusion temperature is 1550 DEG C；So After reduce furnace power, after melt temperature is down to 1350 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.1%；Continue heat preservation about 10 Minute, rapid cast alloys, ranging from 1300 DEG C of cast temperature.
About 10 minutes after having cast, water cooling swage is opened, ingot casting temperature is less than 600 DEG C at this time, from setting temperature to 600 DEG C Between cooling rate be about 70 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting hardness reaches HRC69.2, and impact flexibility reaches 12.4J/cm2, bending strength reaches 954MPa.
It is raw material, ingredient model that embodiment 3., which selects high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, metallic nickel and ingot iron, It encloses as follows：Cr：10.0wt.%；B：2.7wt.%；C:0.8wt.%；Ni:1.2wt.%；Nb:0.6wt.%；Impurity element control System is shown in Table 2.
After good corresponding raw material being weighed according to component requirements proportioning, using induction melting and model casting, the specific steps are：
High carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, metallic nickel and ingot iron are melted first, fusion temperature 1620 ℃；Then furnace power is reduced, after melt temperature is down to 1320 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.12%；After continuation of insurance Temperature about 8 minutes, rapid cast alloys, ranging from 1280 DEG C of cast temperature.
About 10 minutes after having cast, sand mold fusible pattern is opened, ingot casting temperature is less than 700 DEG C at this time, from setting temperature to 700 DEG C Between cooling rate be about 60 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting hardness reaches HRC69.8, and impact flexibility reaches 12.8J/cm2, bending strength reaches 954MPa.
It is raw material that embodiment 4., which selects high carbon ferro-chrome, crome metal, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron, at Divide range as follows：Cr：11.0wt.%；B：2.7wt.%；C:0.7wt.%；Ni:1.5wt.%；Nb:0.2wt.%；V: 0.4wt.%；Impurity element control is shown in Table 2.
After good corresponding raw material being weighed according to component requirements proportioning, using induction melting and sand casting, the specific steps are：
High carbon ferro-chrome, crome metal, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron are melted first, fusion temperature is 1600℃；Then furnace power is reduced, after melt temperature is down to 1300 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.14%；After Continuation of insurance temperature about 7 minutes, rapid cast alloys, ranging from 1250 DEG C of cast temperature.
About 7 minutes after having cast, open sand mould, at this time ingot casting temperature be less than 800 DEG C, from setting temperature to 800 DEG C it Between cooling rate be about 60 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting average hardness reaches HRC70.9, and impact flexibility reaches 10.2J/cm2, bending strength reaches 910MPa.
Fig. 2 and Fig. 3 are shown in the EDS constituent analyses of ingot casting hard phase and matrix phase respectively, it is seen that Ni elements are in hard phase Solid solution capacity is relatively low, and is mainly enriched in matrix phase, plays the role of strengthening matrix phase.
It is raw material that embodiment 5., which selects high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron, Composition range is as follows：Cr：10.0wt.%；B：2.6wt.%；C：0.6wt.%；Ni:0.6wt.%；Nb：0.3wt.%；V： 0.1wt.%；Impurity element control is shown in Table 2.
After weighing good corresponding raw material according to component requirements proportioning, using induction melting and lost foam casting, specific steps It is as follows：
High carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel, ingot iron are melted first, fusion temperature is 1580℃；Then furnace power is reduced, after melt temperature is down to 1320 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.12%；After Continuation of insurance temperature about 9 minutes, rapid cast alloys, ranging from 1250 DEG C of cast temperature.
About 8 minutes after having cast, disappearance model sand mold is opened, ingot casting temperature is less than 700 DEG C at this time, from setting temperature to 700 Cooling rate between DEG C is about 70 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting hardness reaches HRC69.4, and impact flexibility reaches 13.2J/cm2, bending strength reaches 1016MPa.
It is raw material, ingredient model that embodiment 6., which selects high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, metallic nickel and ingot iron, It encloses as follows：Cr：10.0wt.%；B：2.6wt.%；C：0.8wt.%；Ni:0.9wt.%；Nb：0.8wt.%；Impurity element control System is shown in Table 2.
It is specific to walk using vacuum induction melting and iron mould casting after weighing good corresponding raw material according to component requirements proportioning It is rapid as follows：
First by high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, metallic nickel and ingot iron, fusion temperature is 1600 DEG C； Then furnace power is reduced, after melt temperature is down to 1350 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.15%；Continue heat preservation about 10 minutes, rapid cast alloys, ranging from 1300 DEG C of cast temperature.
About 10 minutes after having cast, open sand mould, at this time ingot casting temperature be less than 600 DEG C, from setting temperature to 600 DEG C it Between cooling rate be about 70 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting hardness reaches HRC69.8, and impact flexibility reaches 12.2J/cm2, bending strength reaches 962MPa.
It is raw material that embodiment 7., which selects high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron, Composition range is as follows：Cr：11.0wt.%；B：2.6wt.%；C：0.9wt.%；Ni:1.2wt.%；Nb：0.2wt.%；V： 0.2wt.%；Impurity element control is shown in Table 2.
After weighing good corresponding raw material according to component requirements proportioning, induction melting and lost foam casting can be used.Specific step It is rapid as follows：
High carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron are melted first, fusion temperature It is 1580 DEG C；Then furnace power is reduced, after melt temperature is down to 1300 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.10%； Continue heat preservation about 5 minutes, rapid cast alloys, ranging from 1250 DEG C of cast temperature.
About 9 minutes after having cast, disappearance model sand mold is opened, ingot casting temperature is less than 600 DEG C at this time, from setting temperature to 600 Cooling rate between DEG C is about 70 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting hardness reaches HRC69.9, and impact flexibility reaches 11.9J/cm2, bending strength reaches 1012MPa.
It is raw material that embodiment 8., which selects high carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, metallic nickel, vanadium iron and ingot iron, Composition range is as follows：Cr：13.0wt.%；B：2.6wt.%；C：0.8wt.%；Ni:1.5wt.%；Nb：0.6wt.%；V： 0.4wt.%；Impurity element control is shown in Table 2.
After weighing good corresponding raw material according to component requirements proportioning, using induction melting and lost foam casting, specific steps It is as follows：
High carbon ferro-chrome, chromic carbide iron, ferro-boron, ferro-niobium, vanadium iron, metallic nickel and ingot iron are melted first, fusion temperature It is 1590 DEG C；Then furnace power is reduced, after melt temperature is down to 1320 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.13%； Continue heat preservation about 7 minutes, rapid cast alloys, ranging from 1280 DEG C of cast temperature.
About 9 minutes after having cast, disappearance model sand mold is opened, ingot casting temperature is less than 700 DEG C at this time, from setting temperature to 700 Cooling rate between DEG C is about 60 DEG C/min.It is air-cooled to room temperature.
Gained ingot casting hardness reaches HRC70, and impact flexibility reaches 11.8J/cm2, bending strength reaches 988MPa.
Casting alloy performance detection prepared by each embodiment is as described below：
1. pair example casting metal carries out hardness test using HR-150A Rockwell hardness machines, load 150Kg makes a call to five It is averaged after point, is listed in table 2.
2. pair example casting metal carries out impact flexibility test using JBS-300B shock machines, range 150J is beaten It is averaged after five samples, is listed in table 2.
3. pair example casting metal material electronics universal testing machine carries out three-point bending resistance experiment, sample size is 2 × 5 × The rectangular specimen of 50mm, span 30mm take the bending strength average value of three same treatment samples to be listed in table 2.
The ingredient of 2 embodiment of table and hardness, impact flexibility and bending strength

Claims (3)

1. a kind of Ni hardens high hardness wear-resisting alloy, it is characterised in that：The mass percentage of each element is Cr in alloy：9.0 ~13.0, B：2.6~2.9, C：0.7~0.9, Ni：0.6~1.5%, Nb：0.4~0.8, V：The content of 0.4~0.8, Mn are small It is less than 0.07 in the content of 0.3, Si, S, P：≤ 0.01, surplus Fe.Wherein C, B summation：3.3~3.6；C/Cr mass ratioes： 0.06~0.08；The summation of Nb, V are 0.5~1.0.
2. the preparation method of Ni hardening high hardness wear-resisting alloy as described in claim 1, it is characterised in that：According to component requirements After proportioning weighs good corresponding raw material, alloy is prepared using induction furnace melting, first by ferrochrome, crome metal, ferro-boron, ferro-niobium, vanadium Iron, metallic nickel and pure iron fusing, 1550~1650 DEG C of fusion temperature；Then furnace power is reduced, melt temperature is down to 1300 After~1350 DEG C, with the fine aluminium deoxidation of dispensing total amount 0.1~0.15%；Continue heat preservation about 5~10 minutes, cast alloys, casting Temperature range is 1250~1300 DEG C；Casting and forming by various methods, from setting temperature to 600 DEG C cooling velocity answer Not less than 60 DEG C/min.
3. the preparation method of Ni hardening high hardness wear-resisting alloy as claimed in claim 2, it is characterised in that：Prepare heavy castings When, casting releases the constraint of mold between 600~800 DEG C.
CN201810589929.0A 2018-06-08 2018-06-08 A kind of Ni hardening high hardness wear-resisting alloy and its casting method Withdrawn CN108707842A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810589929.0A CN108707842A (en) 2018-06-08 2018-06-08 A kind of Ni hardening high hardness wear-resisting alloy and its casting method
CN201910431576.6A CN110029288A (en) 2018-06-08 2019-05-22 A kind of Ni hardening high hardness alloy and its casting and heat treatment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810589929.0A CN108707842A (en) 2018-06-08 2018-06-08 A kind of Ni hardening high hardness wear-resisting alloy and its casting method

Publications (1)

Publication Number Publication Date
CN108707842A true CN108707842A (en) 2018-10-26

Family

ID=63871470

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810589929.0A Withdrawn CN108707842A (en) 2018-06-08 2018-06-08 A kind of Ni hardening high hardness wear-resisting alloy and its casting method

Country Status (1)

Country Link
CN (1) CN108707842A (en)

Similar Documents

Publication Publication Date Title
CN108660392A (en) A kind of Si strengthens high hardness wear-resisting alloy and its casting method
CN110029285A (en) A kind of Si solid solution enhancing cast iron and its manufacture and heat treatment method
CN108707842A (en) A kind of Ni hardening high hardness wear-resisting alloy and its casting method
CN105039833B (en) Ferrovanadium chromium antifriction alloy and preparation method thereof
CN105803340B (en) A kind of abrasion resistant cast steel and preparation method thereof
CN108707812A (en) A kind of Al toughenings high hardness wear-resisting alloy and its casting and heat treatment method
CN108570613A (en) A kind of Al toughenings high hardness wear-resisting alloy and its casting method
CN108677106A (en) A kind of Mn activeness and quietness high hardness wear-resisting alloy and its casting method
CN108411219A (en) A kind of Co Strengthening and Toughenings high hardness wear-resisting alloy and its casting method
CN108660393A (en) A kind of refractory metal segregation toughening high hard alloy and its casting and heat treatment method
CN108611573A (en) A kind of casting of FeCrBC high hardness wear-resistings alloy and heat treatment method
CN110029288A (en) A kind of Ni hardening high hardness alloy and its casting and heat treatment method
CN108660394A (en) A kind of Ni hardening high hardness wear-resisting alloy and its casting and heat treatment method
CN108425073A (en) A kind of Si strengthens high hardness wear-resisting alloy and its casting and heat treatment method
CN109988976A (en) A kind of Al toughening high hardness alloy and its casting and heat treatment method
CN108396250A (en) A kind of Co Strengthening and Toughenings high hardness alloy and its casting and heat treatment method
CN108570616A (en) A kind of Mn activeness and quietness high hard alloy and its casting and heat treatment method
CN110029283A (en) A kind of Co toughening cast iron and its manufacture and heat treatment method
CN108425072A (en) A kind of Rare Earth Lanthanum toughening high hard alloy and its casting and heat treatment method
CN109972024A (en) A kind of preparation method of pinion steel Steel Bar and preparation method thereof and rod iron
CN108570615A (en) A kind of refractory metal segregation toughening high hardness alloy and its casting method
CN110004379A (en) A kind of Mn hardening wear resistant cast iron and its manufacture and heat treatment method
CN108707835A (en) A kind of rare-earth yttrium toughening high hard alloy and its casting and heat treatment method
CN108570614A (en) A kind of molybdenum element segregation toughening high hardness alloy and its casting method
CN108396249A (en) A kind of lanthanum carbonate toughening high hard alloy and its casting and heat treatment method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20181026

WW01 Invention patent application withdrawn after publication