CN1007066B - The binding agent that is used for press-forming inoculating block - Google Patents
The binding agent that is used for press-forming inoculating blockInfo
- Publication number
- CN1007066B CN1007066B CN 86108736 CN86108736A CN1007066B CN 1007066 B CN1007066 B CN 1007066B CN 86108736 CN86108736 CN 86108736 CN 86108736 A CN86108736 A CN 86108736A CN 1007066 B CN1007066 B CN 1007066B
- Authority
- CN
- China
- Prior art keywords
- binding agent
- paraffin
- inoculant block
- sbr
- styrene
- 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.)
- Expired
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a kind of binding agent of powder pressing forming inoculant block, adopt the inoculant block of this binding agent compacting both attractive in appearance, solid, use and convenient, can effectively eliminate the inoculation fade phenomenon, this binding agent is made up of styrene-butadiene rubber(SBR), industrial paraffin and industrial naptha.
Wherein styrene-butadiene rubber(SBR) and paraffin is all as binding agent, but but the also effect of super fatting agent of paraffin, thereby the inoculant block visual appearance that compacting is come out is good, and the intensity height is applicable to smallclothes in graphitic cast iron and the spheroidal graphite cast iron.
Description
The present invention relates to make the employed a kind of binding agent of in-mold inoculation inoculant block, it is applicable to the inoculant block of pressing machine compression moulding.Use this binding agent can make in-mold inoculation inoculant block that good pressing process performance and satisfied use processing performance are arranged.
In Foundry Production, graphitic cast iron, spheroidal graphite cast iron all will carry out inoculation usually, and this is a kind of most economical effective means that improves foundry goods tissue and performance.But that generally uses in producing at present joins 75% ferro-silicon technology in the molten iron stream of coming out of the stove, and its pregnant effect joins at ferrosilicon that clock more than a minute just can reach maximum in the molten iron, just decays subsequently, until disappearance.Like this, the molten iron majority that the enters casting mold molten iron that is inoculation fade.And the employing in-mold inoculation inoculant block carries out inoculation to the molten iron that enters casting mold, just can basically eliminate inoculation fade phenomenon, and foundry goods tissue and performance are improved.
Inoculant block is to mix the back by granular nucleating agent (usually Cast Iron Production in based on ferro-silicon) and binding agent to suppress and form.After the nucleating agent composition was determined, the reliability of molten steel preparation and homogeneity just depended on the characteristic of binding agent to a great extent.The binding agent of in-mold inoculation inoculant block use in the past mainly is paraffin and water glass.(seeing " magnesium iron " 1985(3), P41～47) it is low to do the inoculant block intensity that stick makes with paraffin, in molten iron fusion too fast, even can cannot stand in casting process that molten iron impacts and " disintegration " makes molten steel preparation inhomogeneous.Easily cause the cast iron slag inclusion and make binding agent, and manufacture easy sticking to mould in the process, be unfavorable for producing in enormous quantities with water glass.
The invention provides a kind of pressing machine compression moulding characteristic that both enabled to satisfy, can be mass-produced, can make inoculant block evenly fusion in molten iron again, make molten iron obtain the inoculant block binding agent that fully reliably breeds uniformly.
This binding agent is raw materials used to be: styrene-butadiene rubber(SBR) (chemical plant, Jilin product) 1500(or 1502); 120# industrial naptha (Yanshan Petro-Chemical Industry Corporation's product); Industrial paraffin (Yanshan Petro-Chemical Industry Corporation's product).
It is as follows to fill a prescription:
Styrene-butadiene rubber(SBR) gasoline solution (concentration 10～20%) 50%
Industrial naptha 30%
Industrial paraffin 20%
Compound method:
Styrene-butadiene rubber(SBR) is cut into fritter less than 10 * 10 * 10mm, and bubble is gone into industrial naptha, is made into concentration and is 10～12% rubber gasoline solution, treats that the rubber grain dissolves the back fully and goes to be mingled with sieving.With the heating paraffin fusing, leave thermal source, pour into industrial naptha in the paraffin and stirring a little, the rubber gasoline solution that will prepare is poured into again, stirs simultaneously, makes it to become slightly to be light brown, and not flocculent uniform liquid gets final product.This binding agent is paste when room temperature.
Using method:
The paste binding agent is heated into liquid with hot water, is poured in the nucleating agent powder for preparing again, it is air-dry to scatter after stirring, and makes gasoline volatilization.After about 4 hours, can suppress inoculant block.
Use this binding agent and 75% ferrosilicon, or contain rare earth or contain the inoculant block that the ferrosilicon of Sb is made, the intensity height, density is big, appearance is bright and clean, through test, and when 1280～1380 ℃ molten steel pouring temperature, its molten making a gesture of measuring between 50～70%.In Iron And Steel Casting factory in Tianjin produces, use, compare with traditional inoculated technology, the refinement of graphitic cast iron eutectic cell, thin section spoken parts in traditional operas is eliminated, and tensile strength can improve 2kg/mm approximately
2Spheroidal graphite cast iron, number of graphite ball increases, and sphere diameter reduces, and can stably produce as cast condition QT40-17, or the foundry goods of the QT60-2 trade mark.
Because this binding agent uses gasoline to make solvent, therefore manufacture with use in answer Fire Hazard Area, should note airtight preservation simultaneously, in case gasoline volatilization.
Claims (1)
1, a kind of binding agent that contains paraffin that is used to suppress inoculant block is characterized in that also containing styrene-butadiene rubber(SBR) and industrial naptha; It is 10～12% styrene-butadiene rubber(SBR) gasoline solution 50% that this binding agent contains concentration, 120# industrial naptha 30%, industrial paraffin 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86108736 CN1007066B (en) | 1986-12-26 | 1986-12-26 | The binding agent that is used for press-forming inoculating block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86108736 CN1007066B (en) | 1986-12-26 | 1986-12-26 | The binding agent that is used for press-forming inoculating block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86108736A CN86108736A (en) | 1988-07-20 |
| CN1007066B true CN1007066B (en) | 1990-03-07 |
Family
ID=4804035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86108736 Expired CN1007066B (en) | 1986-12-26 | 1986-12-26 | The binding agent that is used for press-forming inoculating block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007066B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1986
- 1986-12-26 CN CN 86108736 patent/CN1007066B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86108736A (en) | 1988-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |