CN105839000A - Casting method of slurry valve body for papermaking - Google Patents

Casting method of slurry valve body for papermaking Download PDF

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Publication number
CN105839000A
CN105839000A CN201610343137.6A CN201610343137A CN105839000A CN 105839000 A CN105839000 A CN 105839000A CN 201610343137 A CN201610343137 A CN 201610343137A CN 105839000 A CN105839000 A CN 105839000A
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CN
China
Prior art keywords
casting
valve body
coating
oozed
component
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
Application number
CN201610343137.6A
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Chinese (zh)
Inventor
刘奎新
刘瑞
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.)
ANHUI XINHONG MACHINERY CO LTD
Original Assignee
ANHUI XINHONG MACHINERY CO LTD
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 ANHUI XINHONG MACHINERY CO LTD filed Critical ANHUI XINHONG MACHINERY CO LTD
Priority to CN201610343137.6A priority Critical patent/CN105839000A/en
Publication of CN105839000A publication Critical patent/CN105839000A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2251/00—Treating composite or clad material
    • C21D2251/02—Clad material

Abstract

The invention discloses a casting method of a slurry valve body for papermaking. The casting method comprises steps as follows: (1), a pouring liquid is prepared and comprises chemical components in percentage by weight as follows: 0.22%-0.26% of C, 0.25%-0.45% of Si, 0.60%-0.80% of Mn, 0.30%-0.50% of Al, 0.30%-0.50% of Zn, 0.20%-0.40% of Zr, 0.05%-0.10% of Ga, smaller than or equal to 0.03% of P, smaller than or equal to 0.02% of S and the balance of Fe; step (2), a casting-infiltration coating is prepared; (3), valve body pouring is performed; (4), heat treatment and finishing are performed. According to the slurry valve body obtained with the casting method, the stable casting-infiltration composite layer is formed on the surface; furthermore, the slurry valve body has the advantages of excellent corrosion resistance and lubricating property, high finished product ratio, stable quality, good appearance quality and usability and long service life, and is applicable to conveying of papermaking slurry.

Description

A kind of casting method of paper grade (stock) serosity valve body
Technical field
The present invention relates to valve casting technology field, particularly relate to the casting method of a kind of paper grade (stock) serosity valve body.
Background technology
Valve is flowable materials conveying and the vitals controlled, and in use, in addition to the requirement of the technical specifications such as temperature to be met, pressure, is also adapted to the different needs of heterogeneity material, such as corrosion, wear, adhesion etc..Meanwhile, sealing property and the service life of valve is also highly important technical specification.
Casting infiltration is at mo(U)ld face by raw material furnishing coating application such as alloyed powders, parent metal immersion antireflective coating material capillary porosity during cast, rely on molten metal heat to make alloy powder melt, melt, combine together with parent metal, thus form the surface composite layer with superperformance at cast(ing) surface.Infiltration technology is promoting while cast properties, has and need not the advantage that special equipment, technique are simple, with short production cycle, with low cost.But, it is susceptible to the problems such as pore, slag inclusion and surface composite layer uneven thickness due to Infiltration technology, causes casting flaw when being applied to valve body production, affect presentation quality and the service life of valve body.Document " research of casting infiltration raising cast steel valve wearability " uses technology of infiltration casting to prepare the valve that flushing resistance is good, improves the service life of valve, but it also indicates that simultaneously, and the problem of casting quality layer poor stability yet suffers from, and need to improve further.Therefore, selecting suitable processing temperature, suitable base material and casting to ooze coating, optimize casting method, improving technology of infiltration casting, to be combined the quality stability of valve body moulding most important.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of steady quality, presentation quality and serviceability are good, the casting method of the paper grade (stock) serosity valve body of length in service life.
The present invention is achieved by the following technical solutions:
The casting method of a kind of paper grade (stock) serosity valve body, comprises the following steps:
(1) preparation potting syrup, the chemical component weight percentage ratio of described potting syrup is as follows: C:0.22%-0.26%, Si:0.25%-0.45%, Mn:0.60%-0.80%, Al:0.30%-0.50%, Zn:0.30%-0.50%, Zr:0.20%-0.40%, Ga:0.05%-0.10%, P≤0.03%, S≤0.02%, surplus is Fe, each raw material is i.e. obtained potting syrup in medium-frequency induction furnace after 1580-1620 DEG C of melting, adjustment chemical composition；
(2) coating is oozed in preparation casting, described casting is oozed coating and is prepared by the raw materials in: 200-300 mesh ferronickel powder 40-50,200-300 mesh aluminium nitride 5-10, polyvinyl alcohol 0.5-1, polyvinylpyrrolidone 0.1-0.2, acrylic acid 0.1-0.2, Ammonium persulfate. 0.01-0.015, sodium gluconate 0.5-1, Lithium metasilicate 2-4, sodium fluoride 1-2, CNT 1-2, silane resin acceptor kh-550 0.5-1；It is CNT and silane resin acceptor kh-550 first to add dispersed with stirring in ethanol in proper amount uniformly, be subsequently adding ferronickel powder, aluminium nitride stirring 1-2h that the preparation method of coating is oozed in described casting, and after being dried removing ethanol, 100-120 DEG C processes 0.5-1h, obtains component A；Polyvinyl alcohol first adds 85-95 DEG C of dissolving in suitable quantity of water completely, be subsequently adding acrylic acid and Ammonium persulfate. 60-70 DEG C stirring 2-4h, after cooling, obtain B component；Component A, B component is uniform with remaining raw material mixed grinding, obtain casting and ooze coating；
(3) cast valve body, first by core in 220-240 DEG C of drying and processing 4-6h, then casting is oozed coating and is coated uniformly on core surface, coating thickness is 1.5-2.5mm, process 1-2h, then mould assembling then at 160-180 DEG C, then potting syrup is poured into a mould under the conditions of 1520-1560 DEG C, it is cooled to room temperature with 20-30 DEG C/h, then carries out finishing；
(4) heat treatment, valve body after step (3) being processed is in 200-300 DEG C of isothermal holding 2-4h, then it is to slowly warm up to 800-850 DEG C of isothermal holding 6-8h with 60-80 DEG C/h, again with 30-50 DEG C/h of slow cooling to 600-650 DEG C of isothermal holding 4-6h, finally it is slowly dropped to room temperature with 50-60 DEG C/h, again obtains finished product after finishing.
The invention have the advantage that
The present invention utilizes CNT and silane resin acceptor kh-550 ferronickel powder, aluminium nitride to carry out surface coating modification as casting infiltration layer material, has good surface protection effect to alloy powder, improves the wettability with molten metal, strengthens metallurgical interface bond strength；Using acrylic acid modified polyvinyl alcohol as binding agent, bond strength is high, and can form stable capillary gap, improves molten metal and wettability that casting is oozed between coating, advantageously forms uniform, stable casting infiltration layer；Being processed by the mixed grinding of remaining raw material, the casting obtained is oozed coating and is fused with metallic matrix through cast, and the compound valve body matrix obtained, through the subsequent processing steps such as Overheating Treatment, finishing, finally gives finished product again.The Parallel Slide Valves valve body obtained by casting method of the present invention, surface forms uniform, stable casting and oozes composite bed, and has excellent decay resistance and greasy property, and yield rate is high, steady quality, presentation quality and serviceability are good, service life is long, are suitable for papermaking pulp-liquor conveying and use.
Detailed description of the invention
The casting method of a kind of paper grade (stock) serosity valve body, comprises the following steps:
(1) preparation potting syrup, the chemical component weight percentage ratio of described potting syrup is as follows: C:0.22%, Si:0.25%, Mn:0.60%, Al:0.30%, Zn:0.30%, Zr:0.20%, Ga:0.05%, P:0.03%, S:0.02%, surplus is Fe, each raw material is i.e. obtained potting syrup in medium-frequency induction furnace after 1580 DEG C of meltings, adjustment chemical composition；
(2) coating is oozed in preparation casting, described casting is oozed coating and is made up of the raw material of following weight (kg): 200 mesh ferronickel powder 40,200 mesh aluminium nitride 5, polyvinyl alcohol 0.5, polyvinylpyrrolidone 0.1, acrylic acid 0.1, Ammonium persulfate. 0.01, sodium gluconate 0.5, Lithium metasilicate 2, sodium fluoride 1, CNT 1, silane resin acceptor kh-550 0.5；It is CNT and silane resin acceptor kh-550 first to add dispersed with stirring in ethanol in proper amount uniformly, be subsequently adding ferronickel powder, aluminium nitride stirring 1h that the preparation method of coating is oozed in described casting, and after being dried removing ethanol, 100 DEG C process 0.5h, obtain component A；Polyvinyl alcohol first adds 85 DEG C of dissolvings in suitable quantity of water completely, be subsequently adding acrylic acid and Ammonium persulfate. 60 DEG C stirring 2h, after cooling, obtain B component；Component A, B component is uniform with remaining raw material mixed grinding, obtain casting and ooze coating；
(3) cast valve body, first by core in 220 DEG C of drying and processing 4h, then oozes casting coating and is coated uniformly on core surface, coating thickness is 1.5mm, processes 1h, then mould assembling then at 160 DEG C, again potting syrup is poured into a mould under the conditions of 1520 DEG C, be cooled to room temperature with 20 DEG C/h, then carry out finishing；
(4) heat treatment, valve body after step (3) being processed, in 200 DEG C of isothermal holding 2h, is then to slowly warm up to 800 DEG C of isothermal holding 6h with 60 DEG C/h, then with 30 DEG C/h of slow coolings to 600 DEG C of isothermal holding 4h, finally it is slowly dropped to room temperature with 50 DEG C/h, again obtains finished product after finishing.
Wherein the model of ferronickel powder selects FeNi80.
The performance test results of the said goods is as follows:
Casting infiltration layer intensity is 60.2HRC, and service life is 5 times of common WCB valve body, and during actual condition uses, composite bed will not peel off, ftracture, and operation conditions is good.

Claims (1)

1. the casting method of a paper grade (stock) serosity valve body, it is characterised in that comprise the following steps:
(1) preparation potting syrup, the chemical component weight percentage ratio of described potting syrup is as follows: C:0.22%-0.26%, Si:0.25%-0.45%, Mn:0.60%-0.80%, Al:0.30%-0.50%, Zn:0.30%-0.50%, Zr:0.20%-0.40%, Ga:0.05%-0.10%, P≤0.03%, S≤0.02%, surplus is Fe, each raw material is i.e. obtained potting syrup in medium-frequency induction furnace after 1580-1620 DEG C of melting, adjustment chemical composition；
(2) coating is oozed in preparation casting, described casting is oozed coating and is prepared by the raw materials in: 200-300 mesh ferronickel powder 40-50,200-300 mesh aluminium nitride 5-10, polyvinyl alcohol 0.5-1, polyvinylpyrrolidone 0.1-0.2, acrylic acid 0.1-0.2, Ammonium persulfate. 0.01-0.015, sodium gluconate 0.5-1, Lithium metasilicate 2-4, sodium fluoride 1-2, CNT 1-2, silane resin acceptor kh-550 0.5-1；It is CNT and silane resin acceptor kh-550 first to add dispersed with stirring in ethanol in proper amount uniformly, be subsequently adding ferronickel powder, aluminium nitride stirring 1-2h that the preparation method of coating is oozed in described casting, and after being dried removing ethanol, 100-120 DEG C processes 0.5-1h, obtains component A；Polyvinyl alcohol first adds 85-95 DEG C of dissolving in suitable quantity of water completely, be subsequently adding acrylic acid and Ammonium persulfate. 60-70 DEG C stirring 2-4h, after cooling, obtain B component；Component A, B component is uniform with remaining raw material mixed grinding, obtain casting and ooze coating；
(3) cast valve body, first by core in 220-240 DEG C of drying and processing 4-6h, then casting is oozed coating and is coated uniformly on core surface, coating thickness is 1.5-2.5mm, process 1-2h, then mould assembling then at 160-180 DEG C, then potting syrup is poured into a mould under the conditions of 1520-1560 DEG C, it is cooled to room temperature with 20-30 DEG C/h, then carries out finishing；
(4) heat treatment, valve body after step (3) being processed is in 200-300 DEG C of isothermal holding 2-4h, then it is to slowly warm up to 800-850 DEG C of isothermal holding 6-8h with 60-80 DEG C/h, again with 30-50 DEG C/h of slow cooling to 600-650 DEG C of isothermal holding 4-6h, finally it is slowly dropped to room temperature with 50-60 DEG C/h, again obtains finished product after finishing.
CN201610343137.6A 2016-05-23 2016-05-23 Casting method of slurry valve body for papermaking Pending CN105839000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610343137.6A CN105839000A (en) 2016-05-23 2016-05-23 Casting method of slurry valve body for papermaking

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106756577A (en) * 2016-12-15 2017-05-31 苏州陈恒织造有限公司 A kind of processing technology of the piston rod with china protective layer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005290553A (en) * 2004-03-11 2005-10-20 Nippon Steel Corp Steel plate excellent in machinability, toughness and weldability, and method for production thereof
CN102022544A (en) * 2011-01-06 2011-04-20 武汉理工大学 Mechanical seal friction pair material and preparation method thereof
JP5065700B2 (en) * 2007-02-09 2012-11-07 株式会社神戸製鋼所 Steel sheet with excellent cutting performance
CN103273170A (en) * 2013-06-18 2013-09-04 佳木斯大学 Build-up welding method for ceramic-reinforced iron-based wear-resistant composite coatings
CN103667961A (en) * 2013-11-08 2014-03-26 张超 Corrosion-resistant wear-resistant alloy steel material for pump valves and preparation method thereof
CN104310388A (en) * 2014-10-15 2015-01-28 宁波墨西科技有限公司 Graphene composite powder material and preparation method thereof
CN104927261A (en) * 2015-05-21 2015-09-23 青岛科凯达橡塑有限公司 Corrosion-resistant electric conduction and heat conduction chlorinated polyvinyl chloride resin material and preparation method and application thereof
CN104975200A (en) * 2014-04-04 2015-10-14 中国科学院苏州纳米技术与纳米仿生研究所 High-performance aluminum/carbon composite material and preparation method thereof
CN105070888A (en) * 2015-07-09 2015-11-18 山东玉皇新能源科技有限公司 Coupled carbon nano tube-graphene composite three-dimensional network structure-coated ternary material and preparation method thereof
CN105268909A (en) * 2015-10-21 2016-01-27 南京润屹电子科技有限公司 Graphene enhanced type valve casting-penetration composition and application method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005290553A (en) * 2004-03-11 2005-10-20 Nippon Steel Corp Steel plate excellent in machinability, toughness and weldability, and method for production thereof
JP5065700B2 (en) * 2007-02-09 2012-11-07 株式会社神戸製鋼所 Steel sheet with excellent cutting performance
CN102022544A (en) * 2011-01-06 2011-04-20 武汉理工大学 Mechanical seal friction pair material and preparation method thereof
CN103273170A (en) * 2013-06-18 2013-09-04 佳木斯大学 Build-up welding method for ceramic-reinforced iron-based wear-resistant composite coatings
CN103667961A (en) * 2013-11-08 2014-03-26 张超 Corrosion-resistant wear-resistant alloy steel material for pump valves and preparation method thereof
CN104975200A (en) * 2014-04-04 2015-10-14 中国科学院苏州纳米技术与纳米仿生研究所 High-performance aluminum/carbon composite material and preparation method thereof
CN104310388A (en) * 2014-10-15 2015-01-28 宁波墨西科技有限公司 Graphene composite powder material and preparation method thereof
CN104927261A (en) * 2015-05-21 2015-09-23 青岛科凯达橡塑有限公司 Corrosion-resistant electric conduction and heat conduction chlorinated polyvinyl chloride resin material and preparation method and application thereof
CN105070888A (en) * 2015-07-09 2015-11-18 山东玉皇新能源科技有限公司 Coupled carbon nano tube-graphene composite three-dimensional network structure-coated ternary material and preparation method thereof
CN105268909A (en) * 2015-10-21 2016-01-27 南京润屹电子科技有限公司 Graphene enhanced type valve casting-penetration composition and application method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106756577A (en) * 2016-12-15 2017-05-31 苏州陈恒织造有限公司 A kind of processing technology of the piston rod with china protective layer

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