CN85108041A - Glass mold material and production technique thereof - Google Patents
Glass mold material and production technique thereof Download PDFInfo
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- CN85108041A CN85108041A CN85108041.3A CN85108041A CN85108041A CN 85108041 A CN85108041 A CN 85108041A CN 85108041 A CN85108041 A CN 85108041A CN 85108041 A CN85108041 A CN 85108041A
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention is a kind of low-alloy grey-cast iron moulding stock that blow molding is made vial, narrow-necked earthen jar that is used for.Weight percent consists of: C3.3-3.8, and Si1.5-2.0, Mn0.5-0.9, S0.005-0.03, P0.05-0.1, Cr0.2-0.7, Mo0.2-0.7, Cu0.7-1.5, the Mg0.003-0.01 surplus is Fe.It is CaO-CaF that this material employing has lining electroslag furnace melting, slag system
2-MgO.Do not adding under the nucleating agent condition, the mould metallographic structure is that quasiflake graphite distributes to the flake graphite transition type.This mould has that resistance to high temperature oxidation, antibiosis are grown, resistance to worn, good heat conductivity, intensity and hardness are suitable, easily performance such as processing.High temperature and high speed lightweight bottle narrow-necked earthen jar production technique preferably.
Description
The invention belongs to glass mold material, particularly blow molding is made the low-alloy grey-cast iron moulding stock of vial, narrow-necked earthen jar.
The moulding stock that is used for blow molding manufacturing vial, narrow-necked earthen jar at present mostly is graphitic cast iron.It is by cupola melting, through pouring into blank, is machined to mould again; It has easy casting, and easily processing, thermal conductivity are good, and make vial, the easy hardened forming of narrow-necked earthen jar.But the grey cast iron pyro-oxidation resistance is poor, and under working conditions, the easy oxidation peeling of mold cavity surfaces influences quality product, has also shortened the life-span of mould.Graphitic cast iron also has at high temperature irreversible characteristic of growing up; Also heat fatigue cracking may appear.Because strength of gray cast iron is lower, mold cavity surfaces or bad mold joint are often frayed, and mould is scrapped, and the life-span of graphitic cast iron mould is about 100,000 times.
For improving the life-span of mould, adopt two kinds of measures more: the one, in cast iron, add a small amount of alloying element, improve the performance of material and come prolongs life.But add alloy in the cupola furnace hot metal ladle, because temperature is low, alloying constituent is difficult to control.The cast iron of therefore many employing cupola meltings carries out alloying smelting through induction furnace again, can reach die life 350,000 times.But induction furnace can not carry out refining, and promptly the objectionable impurities in the cast iron can not remove or reduce, and particularly sulphur content is higher; The 2nd, the form of graphite in the change cast iron makes it to become vermiform by the sheet distribution and distributes, and improves the use properties of mould, improves the life-span.Prior art adopts and add nucleating agent when melting in molten iron, carries out inoculation, and technology is complicated, and the thermal conductivity of vermicular cast iron is not as graphitic cast iron, and this will influence further raising machine speed.
The novel process that the purpose of this invention is to provide a kind of novel glass moulding stock and produce this material.This material has the principal advantages of graphitic cast iron, and has improved high temperature oxidation resistance, has improved irreversible growing up under the high temperature.This technology can change the form of graphite in the cast iron under the condition that does not add nucleating agent, improve the over-all properties of mould, with suitable high temperature, at a high speed, the production of lightweight bottle, narrow-necked earthen jar.
The present invention is achieved in that in order to improve the performance of cast iron, adopts alloying.Promptly add a spot of Cr, Mo, Cu, Mg.S is a harmful element in the iron, needs to reduce, and adds Cr, Mo and can improve the oxidation-resistance of cast iron and improve intensity.Adding Cu can change the castability and the processing characteristics of cast iron.Adding Mg can change the form of graphite in the cast iron.The weight percent of material of the present invention is composed as follows: C 3.3-3.8 Si 1.5-2.0 Mn 0.5-0.9 S 0.005-0.03 P 0.05-0.1 Cr 0.2-0.7 Mo 0.2-0.7 Cu 0.7-1.5 Mg 0.003-0.01 surplus is Fe.
Adopting on production technique has lining electroslag furnace or cupola furnace ten that lining electroslag furnace duplex production technique is arranged.Promptly with there being the lining electroslag furnace to come useless mould of melting and steel scrap etc., the also available molten iron that has the lining electroslag furnace to come the refining cupola furnace.Only needing that consumable electrode is changed into Graphite Electrodes gets final product.Electroslag melting has over-heat metal and two effects of refining.So both can reach the alloying purpose, and can remove non-metallic inclusion again, and reduce the gas total content, and particularly make the sulphur content in the molten iron fall very lowly, some element in the slag can enter in the molten iron on a small quantity.Therefore under the condition that does not add nucleating agent, produced the effect of inoculation.Adopt common sand mold, chill core casting mould blank.With the glass mold of this explained hereafter, has the low-alloy grey-cast iron that quasiflake graphite distributes to the flake graphite transition type.Its metallographic structure is special, is a kind of stratified structural shape, is one deck dense structure near die-face (the chilling face when promptly casting), and graphite form is quasiflake graphite and a small amount of globular graphite that is evenly distributed.The centre is a transition layer, and graphite form is similar to common grey iron with distribution, is thicker flake graphite.Skin also is a flake graphite, but because of the cooling intensity difference, the size and the middle layer of graphite are different.The nodulizing rate of die-face chill and the composition of slag system, the composition of the pig iron, desulfurization degree and cooling velocity of casting are relevant.Adopt high basicity, the high reactivity slag system helps desulfurization, helps some element again and enters molten iron, reaches the purpose of inoculation, adopts the chill core to strengthen cooling, also causes favourable condition for the wriggling of graphite or nodularization.The alloying element such as Mg, the Mo that contain the energy crystal grain thinning in the molten iron obtain to have the essential condition that quasiflake graphite distributes.There is lining electroslag melting technology that homogeneity, metallographic structure, alloying, denaturing treatment and the over-all properties of cast iron Chemical Composition are had special effect.
The glass mold of producing with the present invention has resistance to high temperature oxidation, and antibiosis is grown, resistance to worn, and thermal conductivity is good, and easily processing has proper intensity and plasticity.Material is pure, and the harmful element sulphur content is low, and nonmetal inclusion and gas total content are low.There is the lining electroslag melting in metallographic structure, can obtain the graphite size that more uniform macrostructure is become reconciled, increased pearlitic dispersity, improved the intensity of cast iron and kept original plasticity, the life-span of mould can be reached 500,000 times.There is lining electroslag melting processing unit simple, less investment, last detective, easy to operate, easily grasp.The present invention reduces cost to improving the quality of products, and boosting productivity all has great role.
The present invention will be further described below by production process:
Equipment is 150 kilograms the lining electroslag furnace, and its furnace lining material is a graphite.Transformer efficiency is 200KW.
Raw material is 100 kilograms of scrap moulds, is welded into consumable electrode with 10 kilograms of steel scraps.Adjust carbon content for 10 kilograms with base iron, alloying elements cr, Mo, Si add with the iron alloy form, and Cu is raw material with the electrolytic copper, and weight is: Fe-Cr0.76kg, Fe-Mo0.76kg, Fe-Si1.4kg, electrolytic copper 1.2kg.Adopt ternary slag system (CaO-CaF
2-MgO) 10-15kg, slag system consists of: CaO 60%, CaF
230%, MgO 10%.The consumable electrode that welding is good is installed on the electrode jaw energising.The decline consumable electrode is with the starting the arc of igniting of coke or graphite block.Progressively add whole slag charges after the scorification, consumable electrode is embedded in the liquid slag bath, with the fusing of consumable electrode, the molten bath constantly raises, and adjusts the electrode rate of feeding, with control melting electric current, reaches the purpose of the molten speed of control.Behind electrode melting 1/3rd, add Fe-Cr, Fe-Mo.Afterwards, spare no effort to primary iron block on a small quantity.When consumable electrode finishes near fusing, add the Fe-Si piece, make it fall into the molten bath as far as possible.Fusing finishes, and mentions dummy electrode, and electrolytic copper is inserted in the molten iron, stirs and melts, and skims then.Smelting time is 1.5 hours.When treating that molten iron temperature is reduced to 1370 ± 20 ℃, carry out casting.Cast needs to adopt sand mold and uses the chill core.Blank after the cast carries out machining after annealing.Make the Beer Bottle mould.Its metallographic structure has from quasiflake graphite and distributes to the flake graphite transition type.The working face of mould (internal surface), graphite form are that vermiform adds a small amount of globular graphite distribution layer, and thickness is 13m/m.The centre is a transition layer, and graphite form is similar to common grey iron with distribution, and thickness is 30m/m.Skin is a flake graphite, and the size and the middle layer of graphite are different, and thickness is 7m/m.The mould total thickness is 50m/m.Its chemical ingredients is: C 3.76 Si 1.67 Mn 0.82 P 0.057 S 0.005 Cr 0.61 Mo 0.36 Cu 1.17 Mg 0.003 surplus is Fe.
Claims (4)
1, a kind of low-alloy grey-cast iron moulding stock that is used for blow molding manufacturing vial, narrow-necked earthen jar, it is characterized in that its weight percent is composed as follows: C3.3-3.8 Si1.5-2.0 Mn0.5-0.9 P0.005-0.1 S0.005-0.03 Cr0.2-0.7 Mo0.2-0.7 Cu0.7-1.5 Mg0.003-0.01 surplus is Fe.
2,, it is characterized in that adopting lining electroslag furnace melting technology is arranged as the production technique of claim 1 described low-alloy grey-cast iron moulding stock.
3, as claim 2 described production technique, it is characterized in that adopting CaO-CaF
2-MgO slag system, its weight consists of CaO 60%, CaF
230%, MgO 10%.
4, as the production technique of claim 2 or 3 described low-alloy grey-cast iron moulding stock, it is characterized in that not adding nucleating agent, the mould metallographic structure is quasiflake graphite and distributes to the flake graphite transition type.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN85108041.3A CN1005257B (en) | 1985-10-23 | 1985-10-23 | Glass moulding material and its processing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN85108041.3A CN1005257B (en) | 1985-10-23 | 1985-10-23 | Glass moulding material and its processing |
Publications (2)
Publication Number | Publication Date |
---|---|
CN85108041A true CN85108041A (en) | 1987-04-29 |
CN1005257B CN1005257B (en) | 1989-09-27 |
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ID=4795876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN85108041.3A Expired CN1005257B (en) | 1985-10-23 | 1985-10-23 | Glass moulding material and its processing |
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CN (1) | CN1005257B (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101942619A (en) * | 2010-09-21 | 2011-01-12 | 常熟市建华模具有限责任公司 | Glass mould material of alloy cast iron and preparation method thereof |
CN102345040A (en) * | 2011-08-09 | 2012-02-08 | 苏州卡波尔模具科技有限公司 | Rare earth microalloy cast ion glass mould |
CN103556034A (en) * | 2013-11-13 | 2014-02-05 | 中国石油集团济柴动力总厂成都压缩机厂 | Vermicularizing treatment process of natural gas power cylinder |
CN104233037A (en) * | 2014-09-25 | 2014-12-24 | 昆山伯建精密模具有限公司 | Glass mould material and preparation method thereof |
CN104451365A (en) * | 2014-12-25 | 2015-03-25 | 常熟市瑞峰模具有限公司 | Alloy cast iron mold for production of perfume bottle |
CN106222538A (en) * | 2016-08-31 | 2016-12-14 | 常熟市金诺精工模具有限公司 | The manufacture method of microalloying vermicular cast iron glass ware mould material |
CN106319337A (en) * | 2016-08-31 | 2017-01-11 | 常熟市金诺精工模具有限公司 | Anti-cracking rare earth alloy cast iron glass mould material |
CN106367670A (en) * | 2016-08-31 | 2017-02-01 | 常熟市金诺精工模具有限公司 | Microalloying vermicular graphite cast iron glassware mold material |
CN106367667A (en) * | 2016-08-31 | 2017-02-01 | 常熟市金诺精工模具有限公司 | Manufacturing method of anti-cracking rare earth alloy cast iron glass mold material |
CN106367668A (en) * | 2016-08-31 | 2017-02-01 | 常熟市金诺精工模具有限公司 | Corrosion resistant and oxidation resistant vanadium-titanium alloy cast iron glass mold material |
CN106521308A (en) * | 2016-12-09 | 2017-03-22 | 大连锦航新能源设备有限公司 | Bottom ring material DPR-D5 of piston rings of marine diesel engine and casting method thereof |
CN110923388A (en) * | 2019-12-11 | 2020-03-27 | 河北安迪模具有限公司 | Preparation method of spherical vermicular graphite gray gradient cast iron glass mold material |
CN111074144A (en) * | 2019-11-19 | 2020-04-28 | 西安理工大学 | Cast iron section for glass mold with gradient distribution of A/D graphite and molding method thereof |
-
1985
- 1985-10-23 CN CN85108041.3A patent/CN1005257B/en not_active Expired
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101942619A (en) * | 2010-09-21 | 2011-01-12 | 常熟市建华模具有限责任公司 | Glass mould material of alloy cast iron and preparation method thereof |
CN101942619B (en) * | 2010-09-21 | 2013-05-29 | 常熟建华模具科技股份有限公司 | Glass mould material of alloy cast iron and preparation method thereof |
CN102345040A (en) * | 2011-08-09 | 2012-02-08 | 苏州卡波尔模具科技有限公司 | Rare earth microalloy cast ion glass mould |
CN102345040B (en) * | 2011-08-09 | 2013-01-16 | 苏州卡波尔模具科技有限公司 | Rare earth microalloy cast ion glass mould |
CN103556034A (en) * | 2013-11-13 | 2014-02-05 | 中国石油集团济柴动力总厂成都压缩机厂 | Vermicularizing treatment process of natural gas power cylinder |
CN104233037A (en) * | 2014-09-25 | 2014-12-24 | 昆山伯建精密模具有限公司 | Glass mould material and preparation method thereof |
CN104451365A (en) * | 2014-12-25 | 2015-03-25 | 常熟市瑞峰模具有限公司 | Alloy cast iron mold for production of perfume bottle |
CN106222538A (en) * | 2016-08-31 | 2016-12-14 | 常熟市金诺精工模具有限公司 | The manufacture method of microalloying vermicular cast iron glass ware mould material |
CN106319337A (en) * | 2016-08-31 | 2017-01-11 | 常熟市金诺精工模具有限公司 | Anti-cracking rare earth alloy cast iron glass mould material |
CN106367670A (en) * | 2016-08-31 | 2017-02-01 | 常熟市金诺精工模具有限公司 | Microalloying vermicular graphite cast iron glassware mold material |
CN106367667A (en) * | 2016-08-31 | 2017-02-01 | 常熟市金诺精工模具有限公司 | Manufacturing method of anti-cracking rare earth alloy cast iron glass mold material |
CN106367668A (en) * | 2016-08-31 | 2017-02-01 | 常熟市金诺精工模具有限公司 | Corrosion resistant and oxidation resistant vanadium-titanium alloy cast iron glass mold material |
CN106521308A (en) * | 2016-12-09 | 2017-03-22 | 大连锦航新能源设备有限公司 | Bottom ring material DPR-D5 of piston rings of marine diesel engine and casting method thereof |
CN111074144A (en) * | 2019-11-19 | 2020-04-28 | 西安理工大学 | Cast iron section for glass mold with gradient distribution of A/D graphite and molding method thereof |
CN110923388A (en) * | 2019-12-11 | 2020-03-27 | 河北安迪模具有限公司 | Preparation method of spherical vermicular graphite gray gradient cast iron glass mold material |
Also Published As
Publication number | Publication date |
---|---|
CN1005257B (en) | 1989-09-27 |
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