CN103882258A - Zinc alloy material for valve seats and preparation method thereof - Google Patents

Zinc alloy material for valve seats and preparation method thereof Download PDF

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Publication number
CN103882258A
CN103882258A CN201410064611.2A CN201410064611A CN103882258A CN 103882258 A CN103882258 A CN 103882258A CN 201410064611 A CN201410064611 A CN 201410064611A CN 103882258 A CN103882258 A CN 103882258A
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zinc
warming
insulation
zinc alloy
alloy material
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CN201410064611.2A
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CN103882258B (en
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刘孝峰
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Jiangsu Rudong Economic Development Zone Economic Development Corporation
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BENGBU YINGLU PHOTOELECTRIC CO LTD
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Abstract

The invention relates to a zinc alloy material for valve seats, which contains the following chemical components in percentage by mass: 13.0-14.5% of copper, 1.0-1.2% of manganese, 0.06-0.08% of tin, 0.1-0.2% of stibium, 1.8-2.3% of chromium, 0.05-0.08% of molybdenum, 1.2-1.5% of vanadium, 0.03-0.05% of nickel and the balance of zinc. The Mn is added to the alloy to lower the heat conductivity, reduce the heat loss and save the electric power. By adding the stibium, chromium and other elements, the alloy has the advantages of favorable working properties, favorable wear resistance, high machining accuracy and favorable sealability. By reducing the copper amount and adding the vanadium, nickel and molybdenum, the crystal grains are refined, and the strength and corrosion resistance can satisfy the requirements for valve seats; and the alloy is free of lead, and thus, is environment-friendly. When the refining agent is used for casting production, the porosity in the casting is lowered by 1-2 degrees, the oxide inclusion content is lowered by 2 levels or so, and the yield is obviously enhanced.

Description

A kind of zinc alloy material and preparation method thereof for valve seat
Technical field
The present invention relates to the manufacture field of metal alloy compositions, relate in particular to a kind of valve seat zinc alloy material and preparation method thereof.
Background technology
The excellent property of zinc alloy, has good casting property, the precision part of can die casting complex-shaped, thin-walled, and cast(ing) surface is smooth; Can carry out surface treatment: electroplate, spray, spray paint, polishing, grinding etc.; When fusing and die casting, do not inhale iron, do not corrode die mould, not sticking to mould; There are the plurality of advantages such as good normal temperature mechanical property and wear resistance.
Valve seat mainly uses leaded brass at present, and objectionable impurities lead content is high, and thermal conductivity is higher, and waste electric energy also has brass density large, and weight is large, and cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of valve seat zinc alloy material and preparation method thereof, this Cu alloy material has that intensity is high, wear resistance good, thermal conductivity is low, corrosion resistant advantage.
Technical scheme of the present invention is as follows:
A kind of valve seat zinc alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: copper 13.0-14.5, manganese 1.0-1.2, tin 0.06-0.08, antimony 0.1-0.2, chromium 1.8-2.3, molybdenum 0.05-0.08, vanadium 1.2-1.5, nickel 0.03-0.05, surplus are zinc.
The production method of zinc alloy material for described valve seat, is characterized in that:
(1), preparing pure zinc and useless zinc alloy originates as zinc-base matter in 1:0.3-0.6 ratio, pure zinc is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add useless zinc fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) copper; (2) manganese, nickel, chromium; (3) tin, molybdenum; (4) other remaining components; The each batch of timed interval of dropping into element is 21-25 minute, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 300-320 DEG C by room temperature with 180-190 DEG C/h of speed, insulation 40-60 minute, be warming up to 440-460 DEG C with 180-190 DEG C/h of speed again, insulation 40-60 minute, be warming up to 620-630 DEG C with 180-190 DEG C/h of speed again, insulation 2-3 hour; Be cooled to 80-100 DEG C with 80-90 DEG C of clear water again, then naturally cool to room temperature, place 1-2 hour; Be warming up to 300-320 DEG C with 180-190 DEG C/h of speed again, insulation 40-60 minute, then be warming up to 440-460 DEG C with 180-190 DEG C/h of speed, insulation 40-60 minute, then be warming up to 620-630 DEG C with 180-190 DEG C/h of speed, insulation 2-3 hour; Be cooled to 120-140 DEG C with 80-90 DEG C of clear water, take out air cooling and get final product.
Described refining agent is made up of the raw material of following weight part: clay 10-12, lapis amiridis 3-4, aluminium nitride 5-6, kaolin 8-10, lazurite 1-2, trees ashes 1-2, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Fluorspar Powder 3-4, Paris white 4-5, Bi 2o 32-3; Its preparation method is that clay, lapis amiridis, aluminium nitride, kaolin, lazurite, trees ashes, aluminium hydroxide, jade powder, montmorillonite are mixed, be heated to 2600-3000 DEG C, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
Beneficial effect of the present invention
Alloy of the present invention, by adding Mn, has reduced thermal conductivity, has reduced thermosteresis, saves energy; By adding the elements such as antimony, chromium, make alloy good processability, wear resistance is good, and working accuracy is high, good airproof performance; The present invention has reduced the consumption of copper, has added vanadium, nickel, molybdenum, refinement crystal grain, ensured that intensity and erosion resistance meet the requirement of valve seat, also have this alloy not leaded, environmental protection.By reasonable control casting post-processing temperature, throwing raw materials in batches, uses useless zinc as raw material, and mechanical property is good, alloy quality homogeneous.Refining agent of the present invention, for Foundry Production, can make the degree of porosity in foundry goods reduce 1-2 degree, and oxide inclusion, 2 grades of left and right, obviously improves yield rate.
Embodiment
A kind of valve seat zinc alloy material, chemical element composition and mass percent thereof that it contains are: copper 13.0-14.5, manganese 1.0-1.2, tin 0.06-0.08, antimony 0.1-0.2, chromium 1.8-2.3, molybdenum 0.05-0.08, vanadium 1.2-1.5, nickel 0.03-0.05, surplus are zinc.
Described valve seat by the production method of zinc alloy material is:
(1), preparing pure zinc and useless zinc alloy originates as zinc-base matter in 1:0.4 ratio, pure zinc is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add useless zinc fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) copper; (2) manganese, nickel, chromium; (3) tin, molybdenum; (4) other remaining components; The each batch of timed interval of dropping into element is 23 minutes, after feeding intake, stirs.
Described casting postheat treatment is: be first warming up to 310 DEG C by room temperature with 186 DEG C/h of speed, be incubated 50 minutes, then be warming up to 450 DEG C with 185 DEG C/h of speed, be incubated 50 minutes, then be warming up to 625 DEG C with 185 DEG C/h of speed, be incubated 2.5 hours; Be cooled to 90 DEG C with 85 DEG C of clear water again, then naturally cool to room temperature, place 1.5 hours; Be warming up to 310 DEG C with 185 DEG C/h of speed again, be incubated 50 minutes, then be warming up to 450 DEG C with 185 DEG C/h of speed, be incubated 50 minutes, then be warming up to 625 DEG C with 185 DEG C/h of speed, be incubated 2.5 hours; Be cooled to 130 DEG C with 85 DEG C of clear water, take out air cooling and get final product.
Described refining agent by following weight part (kilogram) raw material make: clay 10, lapis amiridis 4, aluminium nitride 5, kaolin 8, lazurite 1, trees ashes 2, aluminium hydroxide 8, jade powder 4, montmorillonite 1, Fluorspar Powder 4, Paris white 4, Bi 2o 33; Its preparation method is that clay, lapis amiridis, aluminium nitride, kaolin, lazurite, trees ashes, aluminium hydroxide, jade powder, montmorillonite are mixed, be heated to 2600-3000 DEG C, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
The present embodiment valve seat zinc alloy material, tensile strength б b is 390Mpa, hardness value HB is 97, impelling strength (J/cm 2) 41.

Claims (4)

1. a valve seat zinc alloy material, is characterized in that: chemical element composition and mass percent thereof that it contains are: copper 13.0-14.5, manganese 1.0-1.2, tin 0.06-0.08, antimony 0.1-0.2, chromium 1.8-2.3, molybdenum 0.05-0.08, vanadium 1.2-1.5, nickel 0.03-0.05, surplus are zinc.
2. the production method of zinc alloy material for valve seat according to claim 1, is characterized in that:
(1), preparing pure zinc and useless zinc alloy originates as zinc-base matter in 1:0.3-0.6 ratio, pure zinc is added to drop in stove and melt, carry out removing impurities matter, deoxidation, employing refining agent initial refining, add alloying constituent and carry out alloying, then add useless zinc fusing, add refining agent secondary refining, detection and adjust chemical element component content to qualified, casting, casting postheat treatment etc.;
(2) in alloying process, to the lot sequence that drops into alloying element in stove be: (1) copper; (2) manganese, nickel, chromium; (3) tin, molybdenum; (4) other remaining components; The each batch of timed interval of dropping into element is 21-25 minute, after feeding intake, stirs.
3. the production method of zinc alloy material for valve seat according to claim 2, it is characterized in that: described casting postheat treatment is: be first warming up to 300-320 DEG C by room temperature with 180-190 DEG C/h of speed, insulation 40-60 minute, be warming up to 440-460 DEG C with 180-190 DEG C/h of speed again, insulation 40-60 minute, be warming up to 620-630 DEG C with 180-190 DEG C/h of speed again, insulation 2-3 hour; Be cooled to 80-100 DEG C with 80-90 DEG C of clear water again, then naturally cool to room temperature, place 1-2 hour; Be warming up to 300-320 DEG C with 180-190 DEG C/h of speed again, insulation 40-60 minute, then be warming up to 440-460 DEG C with 180-190 DEG C/h of speed, insulation 40-60 minute, then be warming up to 620-630 DEG C with 180-190 DEG C/h of speed, insulation 2-3 hour; Be cooled to 120-140 DEG C with 80-90 DEG C of clear water, take out air cooling and get final product.
4. the production method of zinc alloy material for valve seat according to claim 2, is characterized in that: described refining agent is made up of the raw material of following weight part: clay 10-12, lapis amiridis 3-4, aluminium nitride 5-6, kaolin 8-10, lazurite 1-2, trees ashes 1-2, aluminium hydroxide 8-10, jade powder 3-4, montmorillonite 1-2, Fluorspar Powder 3-4, Paris white 4-5, Bi 2o 32-3; Its preparation method is that clay, lapis amiridis, aluminium nitride, kaolin, lazurite, trees ashes, aluminium hydroxide, jade powder, montmorillonite are mixed, be heated to 2600-3000 DEG C, stir 1-2 hour, after cooling, be added in the hydrochloric acid soln of 10-15%, soak 1-2 hour, filter, filter residue is cleaned with clear water repeatedly, dries, and merges and mixes and get final product with other composition.
CN201410064611.2A 2014-02-26 2014-02-26 A kind of valve seat zinc alloy material and preparation method thereof Active CN103882258B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113512667A (en) * 2021-06-22 2021-10-19 北京科技大学 Zn-Cu-Ti-Mo alloy and plate with high corrosion resistance, high toughness and excellent processability and preparation method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109097629B (en) * 2018-09-21 2021-01-15 北京科技大学 Biodegradable Zn-Mo series zinc alloy and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06228686A (en) * 1993-01-29 1994-08-16 Nisso Kinzoku Kagaku Kk Zinc base alloy wire and production of zinc alloy wire
US5945066A (en) * 1997-11-20 1999-08-31 Griffin; James D. Zinc-copper based alloy and castings made therefrom
CN1869269A (en) * 2006-03-22 2006-11-29 兰州理工大学 Rear earth high zinc-copper alloy material and its preparation method
CN102286676A (en) * 2011-09-05 2011-12-21 铜陵森泰金属材料有限公司 High-strength zinc alloy

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06228686A (en) * 1993-01-29 1994-08-16 Nisso Kinzoku Kagaku Kk Zinc base alloy wire and production of zinc alloy wire
US5945066A (en) * 1997-11-20 1999-08-31 Griffin; James D. Zinc-copper based alloy and castings made therefrom
CN1869269A (en) * 2006-03-22 2006-11-29 兰州理工大学 Rear earth high zinc-copper alloy material and its preparation method
CN102286676A (en) * 2011-09-05 2011-12-21 铜陵森泰金属材料有限公司 High-strength zinc alloy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113512667A (en) * 2021-06-22 2021-10-19 北京科技大学 Zn-Cu-Ti-Mo alloy and plate with high corrosion resistance, high toughness and excellent processability and preparation method thereof
CN113512667B (en) * 2021-06-22 2022-03-29 北京科技大学 Zn-Cu-Ti-Mo alloy and plate with high corrosion resistance, high toughness and excellent processability and preparation method thereof

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Address before: 233010 1193 Huaguang Road, hi tech Zone, Anhui, Bengbu

Patentee before: BENGBU YINGLU PHOTOELECTRIC Co.,Ltd.