CN1033952A - Gray iron, nodulizing inner inoculation lump - Google Patents
Gray iron, nodulizing inner inoculation lump Download PDFInfo
- Publication number
- CN1033952A CN1033952A CN 87107138 CN87107138A CN1033952A CN 1033952 A CN1033952 A CN 1033952A CN 87107138 CN87107138 CN 87107138 CN 87107138 A CN87107138 A CN 87107138A CN 1033952 A CN1033952 A CN 1033952A
- Authority
- CN
- China
- Prior art keywords
- inoculant block
- inoculant
- block
- binding agent
- intensity
- 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- Withdrawn
Links
- 238000011081 inoculation Methods 0.000 title claims description 8
- 229910001060 Gray iron Inorganic materials 0.000 title claims description 6
- 239000002054 inoculum Substances 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 239000004814 polyurethane Substances 0.000 claims abstract description 7
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims abstract description 5
- 229920002635 polyurethane Polymers 0.000 claims abstract description 4
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 4
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 claims description 5
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 10
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 abstract description 3
- 239000012188 paraffin wax Substances 0.000 abstract description 3
- 235000019353 potassium silicate Nutrition 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000000151 deposition Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 230000000284 resting effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
Inoculant block commonly used at present is many to be formed as the binding agent bonding with paraffin, waterglass rubber etc. by 75 silicon iron powders and ice crystal powder.The inoculant block that also has casting in addition.The inoculant block of paraffin and waterglass bonding, intensity is low, and the resting period is short, and easily causes the defective that produces " bright spot " in the foundry goods.Though inoculant block that rubber bound becomes and casting inoculant block intensity are high, are difficult for fusing, have weakened pregnant effect.
The present invention makes inoculant block with polyurethane or polyvinyl acetaldehyde PUR as binding agent, and the intensity height is not fragile in transporting, depositing, and melts evenly when cast, and can make various complicated shapes, is suitable for the requirement of all kinds of formative methods to inoculated technology.
Description
The present invention relates to the manufacturing of the in-mold inoculation inoculant block that gray iron, magnesium iron use.
Adding inovulant in cast iron (gray iron, magnesium iron) is a kind of process commonly used both at home and abroad at present, improving the performance of gray iron, magnesium iron, and saves the heat treatment step of magnesium iron.Breed and two kinds of methods of instant inoculation in the general bag commonly used.Mould cavity inoculation is owned by France in instant inoculation, because its pregnant effect is good, saves trouble, and is suitable for producing on the streamline, so be widely used day by day.During mould cavity inoculation, inovulant is that the form with inoculant block is placed in the casting mold, and the fusing gradually along with the inflow of molten iron when cast is sneaked in the molten iron and play a part to breed.Inoculant block commonly used at present is many with 75 silicon iron powders and a certain proportion of paraffin, and waterglass etc. are as the binding agent molding bonded.But such inoculant block is easy to collapse because adhesion strength is hanged down in fusion process, causes the defective that produces " bright spot " (silicon-rich areas) in the foundry goods.And be easy to breakage in the process because room temperature strength is hanged down in transportation and deposited, therefore be unsuitable for commercialization production.During as binding agent,, when cast, be difficult for fusing with rubber though its adhesion strength is higher.Because above-mentioned a variety of causes causes these inoculant blocks to be not suitable for using on the moulding line of vertical-parting.
It is higher to the objective of the invention is to develop a kind of room temperature strength, is easy to again during cast successively melt, and can be made into the inoculant block of arbitrary shape.
Formation of the present invention be with polyurethane or this two big hot melt adhesive of Pioloform, polyvinyl acetal as binding agent 75 silicon iron powders that bond, the ice crystal powder is to make the inoculant block of definite shape.
Particular content of the present invention promptly gets required inoculant block for 75 silicon iron powders and ice crystal powder are mixed back hot briquetting in the mould of definite shape with polyurethane or polyvinyl acetaldehyde PUR again with the certain proportion mixing after the cooled and solidified.
Inoculant block of the present invention can successively evenly melt when cast, and foundry goods does not produce " bright spot " defective.The shape inoculant block that can fry batter in a thin layer simultaneously is used for the formative method of vertical-parting.And intensity is higher when room temperature, is difficult for fragmentation, so be convenient to deposit and transport, helps commercialization production.
Embodiments of the invention are as follows:
With 75 silicon iron powders below 20 orders, ice crystal powder and polyvinyl butyral powder end are poured the inoculant block that Chong is tight in the thermometal mould with certain die cavity, cooling forming gets final product requiredly into after mixing in 100: 3: 6 ratio.Mold cavity can be decided by the shape of inoculant block.Mould can be heated to 100～150 ℃ in general electric dry oven.
Claims (2)
1, the inoculant block that is used for gray iron, magnesium iron mould cavity inoculation of a kind of 75 ferrosilicon and ice crystal composition is characterized in that using polyurethane, and the polyvinyl acetaldehyde PUR is as binding agent.
2,, it is characterized in that with polyvinyl butyral resin as binding agent by the said inoculant block of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87107138 CN1008608B (en) | 1987-10-29 | 1987-10-29 | Gray iron, magnesium iron in-mold inoculation inoculant block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87107138 CN1008608B (en) | 1987-10-29 | 1987-10-29 | Gray iron, magnesium iron in-mold inoculation inoculant block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033952A true CN1033952A (en) | 1989-07-19 |
| CN1008608B CN1008608B (en) | 1990-07-04 |
Family
ID=4815987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87107138 Expired CN1008608B (en) | 1987-10-29 | 1987-10-29 | Gray iron, magnesium iron in-mold inoculation inoculant block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008608B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732658A (en) * | 2019-10-22 | 2020-01-31 | 东风精密铸造安徽有限公司 | in-mold casting inoculation block and inoculation method of nodular cast iron |
-
1987
- 1987-10-29 CN CN 87107138 patent/CN1008608B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732658A (en) * | 2019-10-22 | 2020-01-31 | 东风精密铸造安徽有限公司 | in-mold casting inoculation block and inoculation method of nodular cast iron |
| CN110732658B (en) * | 2019-10-22 | 2021-08-24 | 东风精密铸造有限公司 | In-mold casting inoculation block and inoculation method of nodular cast iron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008608B (en) | 1990-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |