CN107299190B - One kind being suitable for Cr12The composite modifier and its preparation and application of MoV - Google Patents
One kind being suitable for Cr12The composite modifier and its preparation and application of MoV Download PDFInfo
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- CN107299190B CN107299190B CN201710495997.6A CN201710495997A CN107299190B CN 107299190 B CN107299190 B CN 107299190B CN 201710495997 A CN201710495997 A CN 201710495997A CN 107299190 B CN107299190 B CN 107299190B
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- composite modifier
- cr12mov
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
- C21C2007/0062—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet
Abstract
A kind of composite modifier and its preparation and application suitable for Cr12MoV；The composite modifier of the Cr12MoV, each raw material weight number is 8 ~ 10 parts of La, 8 ~ 10 parts of Ce, 12 ~ 16 part, nanometer BN1.0 ~ 1.2 part of nano TiN, Zn4 ~ 6 part, 4 ~ 6 parts of Mg, 2 ~ 4 parts of Al, 16 ~ 20 parts of Si, 15 ~ 20 parts of miberal powder that 30 ~ 35 parts of the miberal powder that K content is 6 ~ 8WT% and Na content are 4 ~ 6wt%.Preparation method is that each raw material is taken to be mixed, ball milling, and roller mixing applies pressure into bulk.Application method is to be added according to the additive amount of molten steel 6kg per ton, and alterant is placed on casting ladle bottom, covers a small amount of iron and cuts then compacting, pouring molten liquid steel can be completed the addition of alterant.Composite modifier of the present invention, the impact flexibility that Cr12MoV crystal grain can be refined, segregation is reduced, improve product.
Description
Technical field
The present invention relates to a kind of cast steel alterant, specifically a kind of composite modifier suitable for Cr12MoV and its
Preparation and application.
Background technique
Cr12MoV is typical cold work die steel, and harden ability, the hardness of Q-tempering, wearability, intensity are all very high.
Be commonly used to make various cold-punching molds and tool complex-shaped, that operating condition is heavy, as punching concave die, edger, rolling mould,
Steel plate deep drawn mould, annular saw, standard tool and gauge, thread rolling die etc..
Cr12MoV belongs to high carbon and chromium ledeburite steel, and carbide content is high, accounts for about 20 %, and often in it is band-like or it is netted not
It is uniformly distributed, segregation is serious, and normative heat treatment is difficult to change the situation of carbide segregation, has seriously affected the mechanics of steel
The service life of performance and mold.And shape, the size of carbide also have a great impact to the performance of steel, especially big bulk
Wedge angle carbide is bigger to the effect of isolating of steel matrix, often becomes the source of impact fracture, fatigue fracture.Therefore pass through
Addition can refine crystal grain, improve the composite modifier of material impact toughness to avoid the generation of above-mentioned undesirable condition from can yet be regarded as most
Economical and practical, effective means.
Summary of the invention
Object of the present invention is to deficiencies to solve above-mentioned technical problem, provide a kind of composite inoculating suitable for Cr12MoV
Agent and its preparation and application are overcome by adding composite modifier prepared by the present invention in Cr12MoV casting process
The problems such as Cr12MoV carbide network is unevenly distributed, crystal grain is larger appeared in production.
Used technical solution is the present invention to solve above-mentioned technical problem:
The parts by weight content of a kind of composite modifier suitable for Cr12MoV, each raw material is as follows: 8 ~ 10 parts of La (lanthanum),
8 ~ 10 parts of Ce (cerium), 12 ~ 16 part, nanometer BN(boron nitride of nano TiN (titanium nitride)) 1.0 ~ 1.2 parts, 4 ~ 6 parts of Zn (zinc), Mg
4 ~ 6 parts of (magnesium), 2 ~ 4 parts of Al (aluminium), 16 ~ 20 parts of Si (silicon), potassium containing K() it measures 30 ~ 35 parts of miberal powder for being 6 ~ 8wt% and contains Na
(sodium) sodium amount is 15 ~ 20 parts of miberal powder of 4 ~ 6 wt%.
The preparation method of the composite modifier suitable for Cr12MoV, takes each raw material according to parts by weight, is mixed
Afterwards, it is milled to diameter 0.15 ~ 0.2mm graininess, is uniformly mixed using roller, applies pressure and is pressed into 8 ~ 10mm of diameter, height
The bulk of 10 ~ 12mm, which obtains, is suitable for Cr12MoV composite modifier.
For the revolving speed for using roller uniformly mixed for 30 ~ 40 revs/min, the time is 1 ~ 1.2 hour.
The application pressure, pressure are 6.5 ~ 8T/cm2。
The application method of the composite modifier suitable for Cr12MoV is added suitable according to the additive amount of molten steel 6kg per ton
For the composite modifier of Cr12MoV, the composite modifier suitable for Cr12MoV is placed on casting ladle bottom, a small amount of iron is covered and cuts
Then it is compacted, pouring molten liquid steel can be completed the addition of alterant.
Beneficial effect is:
1, the present invention is suitable for the composite modifier of Cr12MoV, and raw materials used raw material market circulation extensively, is easy to purchase
It buys；Manufacture craft is simple；Production process is short；Facilitate industrialized production.
2, the present invention is suitable for the composite modifier of Cr12MoV, through test and practical proof, can refine crystal grain, reduce partially
Analysis, the impact flexibility for improving product.
Specific embodiment
The present invention will be further described for following embodiment, does not have any restriction to the present invention.
Embodiment 1
The parts by weight content of a kind of composite modifier suitable for Cr12MoV, each raw material is as follows: 8 parts of La, 8 parts of Ce,
BN1.0 parts of nano TiN 12 part, nanometer, 4 parts of Zn, 4 parts of Mg, 2 parts of Al, 16 parts of Si, 30 parts of miberal powder that K content is 6 ~ 8WT%
It is 15 parts of miberal powder of 4 ~ 6wt% with Na content.
The preparation method of the composite modifier suitable for Cr12MoV, takes each raw material according to parts by weight, is mixed
Afterwards, it is milled to diameter 0.15mm graininess, is uniformly mixed using roller, the block that pressure is pressed into diameter 8mm, height 10mm is applied
Shape, which obtains, is suitable for Cr12MoV composite modifier.
For the revolving speed for using roller uniformly mixed for 30 revs/min, the time is 1.2 hours.
The application pressure, pressure 6.5T/cm2。
The application method of the composite modifier suitable for Cr12MoV is added suitable according to the additive amount of molten steel 6kg per ton
For the composite modifier of Cr12MoV, the composite modifier suitable for Cr12MoV is placed on casting ladle bottom, a small amount of iron is covered and cuts
Then it is compacted, pouring molten liquid steel can be completed the addition of alterant.
Embodiment 2
The parts by weight content of a kind of composite modifier suitable for Cr12MoV, each raw material is as follows: La10 parts, Ce 10
Part, BN1.2 parts of nano TiN 16 part, nanometer, Zn6 parts, 6 parts of Mg, 4 parts of Al, 20 parts of Si, the miberal powder 35 that K content is 6 ~ 8wt%
Part and Na content are 20 parts of miberal powder of 4 ~ 6wt%.
The preparation method of the composite modifier suitable for Cr12MoV, takes each raw material according to parts by weight, is mixed
Afterwards, it is milled to diameter 0.2mm graininess, is uniformly mixed using roller, the block that pressure is pressed into diameter 10mm, height 12mm is applied
Shape, which obtains, is suitable for Cr12MoV composite modifier.
For the revolving speed for using roller uniformly mixed for 40 revs/min, the time is 1 hour.
The application pressure, pressure 8T/cm2。
The application method of the composite modifier suitable for Cr12MoV is added suitable according to the additive amount of molten steel 6kg per ton
For the composite modifier of Cr12MoV, the composite modifier suitable for Cr12MoV is placed on casting ladle bottom, a small amount of iron is covered and cuts
Then it is compacted, pouring molten liquid steel can be completed the addition of alterant.
Embodiment 3
The parts by weight content of a kind of composite modifier suitable for Cr12MoV, each raw material is as follows: La9 parts, 9 parts of Ce,
1.1 parts of 13 part, nanometer BN of nano TiN, Zn5 parts, 5 parts of Mg, 3 parts of Al, 18 parts of Si, K content be 6 ~ 8wt% miberal powder 30 ~
35 parts are 18 parts of miberal powder of 4 ~ 6wt% with Na content.
The preparation method of the composite modifier suitable for Cr12MoV, takes each raw material according to parts by weight, is mixed
Afterwards, it is milled to diameter 0.18mm graininess, is uniformly mixed using roller, the block that pressure is pressed into diameter 9mm, height 11mm is applied
Shape, which obtains, is suitable for Cr12MoV composite modifier.
For the revolving speed for using roller uniformly mixed for 36 revs/min, the time is 1.1 hours.
The application pressure, pressure 7T/cm2。
The application method of the composite modifier suitable for Cr12MoV is added suitable according to the additive amount of molten steel 6kg per ton
For the composite modifier of Cr12MoV, the composite modifier suitable for Cr12MoV is placed on casting ladle bottom, a small amount of iron is covered and cuts
Then it is compacted, pouring molten liquid steel can be completed the addition of alterant.
Correlation test:
20kg composite modifier of the present invention is prepared first in test 1 ~ 3.2kg Rare Earth Lanthanum, 2kg rare earth are weighed respectively
Cerium, 1kg metal Zn, 1kg metal Mg, 0.6kg metal Al, 3.6kg silicon metal, miberal powder 7kg, Na content that K content is 6 ~ 8wt%
For the miberal powder 2.8kg of 4 ~ 6wt%.By above-mentioned material use respectively ball mill grinding at diameter be 0.15 ~ 0.2mm graininess (delivery shape
State is except 0.15 ~ 0.2mm of diameter granular Zn, Al, Mg) it is spare；It is 50kg, revolving speed that above-mentioned all materials, which are poured into capacity,
30 ~ 40 revs/min of roller is sufficiently mixed 1.2 hours；Apply 6.5 ~ 8T/cm with vertical press2Pressure, pass through molding die
It is spare that above-mentioned uniformly mixed material is pressed into 8 ~ 10mm of diameter, the bulk of 10 ~ 12mm of height.
One production 9 total 560kg of automobile die insert of test, use above-mentioned alterant 3kg；Two production edger of test
Have a set of total 980kg, uses above-mentioned alterant 5.88kg；Three production of test, three sets of thread rolling die total 360kg, use are above-mentioned
Alterant 2.16kg；Testing one, two, three part components tests, the results are shown in Table 1.Above three tested parts are adopted
It is heat-treated with 960 DEG C of oil quenchings, 180 DEG C of double tempering techniques, piece surface hardness is all larger than HRC58.Respectively in above-mentioned examination
Testing part noumenon takes the progress Charpy impact experiment of v-notch sample and Grain size analysis, experimental result as shown in table 2:
Table 1: tested parts ontology chemical element content (part)
Table 2: tested parts body sampling mechanical property and grain size table
By testing above, it can be seen that Cr12MoV composite modifier of the present invention can promote part grain size number；
Cr12MoV part impact flexibility is significantly improved, increase rate is all larger than 150%, to improve components service safety.
Claims (3)
1. one kind is suitable for Cr12The composite modifier of MoV, which is characterized in that the parts by weight content of each raw material is as follows: La 8 ~
10 parts, 8 ~ 10 parts of Ce, 12 ~ 16 part, nanometer BN1.0 ~ 1.2 part of nano TiN, Zn4 ~ 6 part, 4 ~ 6 parts of Mg, 2 ~ 4 parts of Al, Si
16 ~ 20 parts, 30 ~ 35 parts of the miberal powder that K content is 6 ~ 8wt % and Na content are 15 ~ 20 parts of miberal powder of 4 ~ 6wt%；
The composite modifier the preparation method comprises the following steps: taking each raw material, after being mixed, be milled to diameter according to above-mentioned parts by weight
0.15 ~ 0.2mm graininess uses roller to carry out mixing 1 ~ 1.2 hour with 30 ~ 40 revs/min of revolving speed, then applies later
Pressure is pressed into the bulk of 8 ~ 10mm of diameter, 10 ~ 12mm of height, that is, obtains and be suitable for Cr12MoV composite modifier.
2. as described in claim 1 a kind of suitable for Cr12The composite modifier of MoV, it is characterised in that: the application pressure,
It exerts pressure as 6.5 ~ 8t/cm2。
3. a kind of application method of the composite modifier suitable for Cr12MoV as described in claim 1, it is characterised in that: press
It is suitable for the composite modifier of Cr12MoV according to the additive amount addition of molten steel 6kg per ton, the composite inoculating of Cr12MoV will be suitable for
Agent is placed on casting ladle bottom, covers a small amount of iron and cuts then compacting, pouring molten liquid steel can be completed the addition of alterant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710495997.6A CN107299190B (en) | 2017-06-26 | 2017-06-26 | One kind being suitable for Cr12The composite modifier and its preparation and application of MoV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710495997.6A CN107299190B (en) | 2017-06-26 | 2017-06-26 | One kind being suitable for Cr12The composite modifier and its preparation and application of MoV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107299190A CN107299190A (en) | 2017-10-27 |
| CN107299190B true CN107299190B (en) | 2019-04-05 |
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| CN201710495997.6A Expired - Fee Related CN107299190B (en) | 2017-06-26 | 2017-06-26 | One kind being suitable for Cr12The composite modifier and its preparation and application of MoV |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108220528B (en) * | 2017-12-30 | 2019-08-09 | 石家庄北科德瑞冶金材料有限公司 | A kind of steel alloy composite refiner and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103602921A (en) * | 2013-10-29 | 2014-02-26 | 上海工程技术大学 | Method for preparing cold-work die steel |
-
2017
- 2017-06-26 CN CN201710495997.6A patent/CN107299190B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103602921A (en) * | 2013-10-29 | 2014-02-26 | 上海工程技术大学 | Method for preparing cold-work die steel |
Non-Patent Citations (2)
| Title |
|---|
| 纳米TiN粉末强化ZGMn13微观组织和力学性能的研究;喻惠武 等;《铸造技术》;20120531;第33卷(第5期);第525-527页 |
| 钾钠稀土复合变质对模具钢组织和性能的影响;杨刚;《热加工工艺》;20150531;第44卷(第9期);第85-87页 |
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Granted publication date: 20190405 Termination date: 20200626 |