CN106269025A - A kind of train parts furan resin for casting overlay film core sand and preparation method thereof - Google Patents
A kind of train parts furan resin for casting overlay film core sand and preparation method thereof Download PDFInfo
- Publication number
- CN106269025A CN106269025A CN201610681039.3A CN201610681039A CN106269025A CN 106269025 A CN106269025 A CN 106269025A CN 201610681039 A CN201610681039 A CN 201610681039A CN 106269025 A CN106269025 A CN 106269025A
- Authority
- CN
- China
- Prior art keywords
- sand
- preparation
- core sand
- overlay film
- resin
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/167—Mixtures of inorganic and organic binding agents
Abstract
The invention discloses a kind of train parts furan resin for casting overlay film core sand and preparation method thereof, it is formed by the preparation of raw material of following weight portion: fused magnesite 140 160, chromite sand 30 40, ceramsite sand 20 30, glass pumice 14 16, furane resins 35, molecule distillating monoglyceride 0.5 0.7, aluminium phosphite 24, calcium stearate 35, spherical quartz powder 8 10, nanometer tungsten oxide 35, silicon boride 57 etc..Furane resins, aluminium phosphite, triphenol methylmethane triglycidyl ether and the triethylene tetramine added in the present invention provides good caking property and solidification effect for core sand, the resin curing agent made with toluenesulfonic acid, Methylsulfate accelerates the hardening of resin time, reduce the concentration of formaldehyde in the air of operating area, beneficially workers ' health；By the common effect of furane resins binding agent with firming agent, improve the intensity of self-hardening sand, and due to lubricant stearic acid calcium and the addition of molecule distillating monoglyceride, improve core sand permeability, decrease gas forming amount.
Description
Invention field
The invention belongs to foundary industry field, concretely relate to a kind of train parts furan resin for casting overlay film core
Sand and preparation method thereof.
Background technology
Precoated sand is molding sand or the core sand being i.e. covered with one layer of hard resin film at sand grain surface before moulding.There are cold process and heat
Two kinds of coating techniques of method: resin is dissolved by cold process ethanol, and during mulling, add molecule distillating monoglyceride, make the two wrap
Overlaying on sand grain surface, ethanol volatilizees, and obtains precoated sand；Full-boiled process is preheating to uniform temperature sand, adds resin and makes it melt, and stirring makes tree
Fat is coated on sand grain surface, adds molecule distillating monoglyceride aqueous solution and lubricant, cools down, crushes, sieves to obtain precoated sand, is used for casting
Steel part, ironcasting.Some main parts size of automobile are all to be cast by precoated sand now.
The gas forming amount of resin core sand is about the twice of clay sand mold, and the addition of reduction resin can reduce always gets angry
Amount.Containing molecule distillating monoglyceride in precoated sand, during molecule distillating monoglyceride decomposes, form ammonia etc..Change due to ammonia
Learn character extremely active, be somewhat heated and be extremely easy in decomposition the N into activity and H atom.Under the high temperature of casting pouring, amount of activated
N and H atom are absorbed by molten metal, and remaining major part N, H are combined into rapidly stable nitrogen, hydrogen molecule causes pore, shadow
Ring the quality of product, but also toxic gas can be produced and be detrimental to health.
Summary of the invention
The invention aims to make up the defect of prior art, it is provided that a kind of train parts furan resin for casting covers
Film core sand and preparation method thereof.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
A kind of train parts furan resin for casting overlay film core sand, is formed by the preparation of raw material of following weight portion: fused magnesite
140-160, chromite sand 30-40, ceramsite sand 20-30, glass pumice 14-16, furane resins 3-5, molecule distillating monoglyceride
0.5-0.7, aluminium phosphite 2-4, calcium stearate 3-5, spherical quartz powder 8-10, nanometer tungsten oxide 3-5, silicon boride 5-7, three phenolic group
Methane triglycidyl ether 2-3, triethylene tetramine 0.2-0.4, toluenesulfonic acid 2-4, Methylsulfate 5-7, sulphuric acid 2-3, phosphatase 24-
6, methanol 8-10, ethanol 6-8, water 20-30.
The preparation method of a kind of train parts furan resin for casting overlay film core sand, comprises the following steps:
(1) it is 65-70 DEG C of hybrid reaction 50-60min by toluenesulfonic acid, Methylsulfate and sulphuric acid in temperature, is cooled to 55-60 DEG C
Rear addition methanol, insulation reaction 40-50min, then add discharging after phosphoric acid, water mix homogeneously, obtain resin curing agent；
(2) by chromite sand, ceramsite sand, glass pumice, fused magnesite mix homogeneously, it is ground into 130-150 mesh granular size, so
Rear addition spherical quartz powder, nanometer tungsten oxide, silicon boride are poured into together in puddle mixer and 4-6min are dry mixed, and obtain mixed sand；
(3) furane resins are poured in ethanol and dissolve, then pour in puddle mixer together with triphenol methylmethane triglycidyl ether
Mix 3-5min with mixed sand, then add molecule distillating monoglyceride, triethylene tetramine, aluminium phosphite, calcium stearate etc. former
The resin curing agent that material and step (1) prepare, shakes out after mixing 5-8min, sieves, to obtain final product after crushing.
Beneficial effects of the present invention:
Core sand thing inorganic raw material of the present invention uses fused magnesite, chromite sand, ceramsite sand, glass pumice, spherical quartz powder, nanometer
The raw material such as tungsten oxide, silicon boride cooperates, make the core sand prepared have excellent fire resistance, durability, thermal-shock resistance and
Corrosion resistance.The furane resins, aluminium phosphite, triphenol methylmethane triglycidyl ether and the triethylene tetramine that add in the present invention are
Core sand provides good caking property and solidification effect, accelerates resin with the resin curing agent that toluenesulfonic acid, Methylsulfate are made
Firm time, reduces the concentration of formaldehyde in the air of operating area, beneficially workers ' health；By furane resins binding agent with solid
The common effect of agent, improves the intensity of self-hardening sand, and adding due to lubricant stearic acid calcium and molecule distillating monoglyceride
Enter, improve core sand permeability, decrease gas forming amount.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1:
A kind of train parts furan resin for casting overlay film core sand, is formed by the preparation of raw material of following weight portion (kg): electric-melting magnesium
Sand 140, chromite sand 30, ceramsite sand 20, glass pumice 14, furane resins 3, molecule distillating monoglyceride 0.5, aluminium phosphite 2, hard
Fat acid calcium 3, spherical quartz powder 8, nanometer tungsten oxide 3, silicon boride 5, triphenol methylmethane triglycidyl ether 2, triethylene tetramine
0.2, toluenesulfonic acid 2, Methylsulfate 5, sulphuric acid 2, phosphatase 24, methanol 8, ethanol 6, water 20.
The preparation method of a kind of train parts furan resin for casting overlay film core sand, comprises the following steps:
(1) it is 65-70 DEG C of hybrid reaction 50-60min by toluenesulfonic acid, Methylsulfate and sulphuric acid in temperature, is cooled to 55-60 DEG C
Rear addition methanol, insulation reaction 40-50min, then add discharging after phosphoric acid, water mix homogeneously, obtain resin curing agent；
(2) by chromite sand, ceramsite sand, glass pumice, fused magnesite mix homogeneously, it is ground into 130-150 mesh granular size, so
Rear addition spherical quartz powder, nanometer tungsten oxide, silicon boride are poured into together in puddle mixer and 4-6min are dry mixed, and obtain mixed sand；
(3) furane resins are poured in ethanol and dissolve, then pour in puddle mixer together with triphenol methylmethane triglycidyl ether
Mix 3-5min with mixed sand, then add molecule distillating monoglyceride, triethylene tetramine, aluminium phosphite, calcium stearate etc. former
The resin curing agent that material and step (1) prepare, shakes out after mixing 5-8min, sieves, to obtain final product after crushing.
Embodiment 2:
A kind of train parts furan resin for casting overlay film core sand, is formed by the preparation of raw material of following weight portion (kg): electric-melting magnesium
Sand 150, chromite sand 35, ceramsite sand 25, glass pumice 15, furane resins 4, molecule distillating monoglyceride 0.6, aluminium phosphite 3, hard
Fat acid calcium 4, spherical quartz powder 9, nanometer tungsten oxide 4, silicon boride 6, triphenol methylmethane triglycidyl ether 2.5, triethylene tetramine
0.3, toluenesulfonic acid 3, Methylsulfate 6, sulphuric acid 2.5, phosphoric acid 5, methanol 9, ethanol 7, water 25.
Preparation method is with embodiment 1.
Embodiment 3:
A kind of train parts furan resin for casting overlay film core sand, is formed by the preparation of raw material of following weight portion (kg): electric-melting magnesium
Sand 160, chromite sand 40, ceramsite sand 30, glass pumice 16, furane resins 5, molecule distillating monoglyceride 0.7, aluminium phosphite 4, hard
Fat acid calcium 5, spherical quartz powder 10, nanometer tungsten oxide 5, silicon boride 7, triphenol methylmethane triglycidyl ether 3, triethylene tetramine
0.4, toluenesulfonic acid 4, Methylsulfate 7, sulphuric acid 3, phosphoric acid 6, methanol 10, ethanol 8, water 30.
Preparation method is with embodiment 1.
The performance test results of the furane resins overlay film core sand that above-described embodiment 1-3 prepares is as shown in the table:
Claims (2)
1. a train parts furan resin for casting overlay film core sand, it is characterised in that by the preparation of raw material of following weight portion
Become: fused magnesite 140-160, chromite sand 30-40, ceramsite sand 20-30, glass pumice 14-16, furane resins 3-5, molecule steam
Evaporate monoglyceride 0.5-0.7, aluminium phosphite 2-4, calcium stearate 3-5, spherical quartz powder 8-10, nanometer tungsten oxide 3-5, silicon boride 5-
7, triphenol methylmethane triglycidyl ether 2-3, triethylene tetramine 0.2-0.4, toluenesulfonic acid 2-4, Methylsulfate 5-7, sulphuric acid 2-
3, phosphatase 24-6, methanol 8-10, ethanol 6-8, water 20-30.
The preparation method of a kind of train parts furan resin for casting overlay film core sand the most according to claim 1, its feature
It is, comprises the following steps:
(1) it is 65-70 DEG C of hybrid reaction 50-60min by toluenesulfonic acid, Methylsulfate and sulphuric acid in temperature, is cooled to 55-60 DEG C
Rear addition methanol, insulation reaction 40-50min, then add discharging after phosphoric acid, water mix homogeneously, obtain resin curing agent；
(2) by chromite sand, ceramsite sand, glass pumice, fused magnesite mix homogeneously, it is ground into 130-150 mesh granular size, so
Rear addition spherical quartz powder, nanometer tungsten oxide, silicon boride are poured into together in puddle mixer and 4-6min are dry mixed, and obtain mixed sand；
(3) furane resins are poured in ethanol and dissolve, then pour in puddle mixer together with triphenol methylmethane triglycidyl ether
Mix 3-5min with mixed sand, then add molecule distillating monoglyceride, triethylene tetramine, aluminium phosphite, calcium stearate etc. former
The resin curing agent that material and step (1) prepare, shakes out after mixing 5-8min, sieves, to obtain final product after crushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681039.3A CN106269025A (en) | 2016-08-18 | 2016-08-18 | A kind of train parts furan resin for casting overlay film core sand and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610681039.3A CN106269025A (en) | 2016-08-18 | 2016-08-18 | A kind of train parts furan resin for casting overlay film core sand and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106269025A true CN106269025A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610681039.3A Pending CN106269025A (en) | 2016-08-18 | 2016-08-18 | A kind of train parts furan resin for casting overlay film core sand and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515140A (en) * | 2018-05-11 | 2018-09-11 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method casting special molding sand for precision stainless steel |
| CN110560628A (en) * | 2019-08-30 | 2019-12-13 | 宁夏共享化工有限公司 | Curing agent for self-hardening furan resin and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148437A (en) * | 1980-04-21 | 1981-11-17 | Mitsubishi Heavy Ind Ltd | Molding method for mold |
| CN102389945A (en) * | 2011-11-07 | 2012-03-28 | 陈显鹏 | Metal type covered shell casting mold and casting method thereof |
| CN102430737A (en) * | 2011-12-02 | 2012-05-02 | 江西铜业集团（东乡）铸造有限公司 | Chiller with coated sand and preparation process thereof |
| CN202356605U (en) * | 2011-12-02 | 2012-08-01 | 江西铜业集团（东乡）铸造有限公司 | Cold iron with precoated sand |
| CN103567365A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Furan resin self-hardening sand for casting and preparation method thereof |
| CN203817299U (en) * | 2014-04-29 | 2014-09-10 | 江苏金洋机械有限公司 | Casting pattern of gray cast iron hub shell |
| CN203817298U (en) * | 2014-04-29 | 2014-09-10 | 江苏金洋机械有限公司 | Sand mold device of nodular cast iron hub |
-
2016
- 2016-08-18 CN CN201610681039.3A patent/CN106269025A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148437A (en) * | 1980-04-21 | 1981-11-17 | Mitsubishi Heavy Ind Ltd | Molding method for mold |
| CN102389945A (en) * | 2011-11-07 | 2012-03-28 | 陈显鹏 | Metal type covered shell casting mold and casting method thereof |
| CN102430737A (en) * | 2011-12-02 | 2012-05-02 | 江西铜业集团（东乡）铸造有限公司 | Chiller with coated sand and preparation process thereof |
| CN202356605U (en) * | 2011-12-02 | 2012-08-01 | 江西铜业集团（东乡）铸造有限公司 | Cold iron with precoated sand |
| CN103567365A (en) * | 2013-10-11 | 2014-02-12 | 铜陵市经纬流体科技有限公司 | Furan resin self-hardening sand for casting and preparation method thereof |
| CN203817299U (en) * | 2014-04-29 | 2014-09-10 | 江苏金洋机械有限公司 | Casting pattern of gray cast iron hub shell |
| CN203817298U (en) * | 2014-04-29 | 2014-09-10 | 江苏金洋机械有限公司 | Sand mold device of nodular cast iron hub |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515140A (en) * | 2018-05-11 | 2018-09-11 | 佛山市高明利钢精密铸造有限公司 | A kind of preparation method casting special molding sand for precision stainless steel |
| CN110560628A (en) * | 2019-08-30 | 2019-12-13 | 宁夏共享化工有限公司 | Curing agent for self-hardening furan resin and preparation method thereof |
| CN110560628B (en) * | 2019-08-30 | 2021-08-31 | 宁夏共享化工有限公司 | Preparation method of curing agent for self-hardening furan resin |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170104 |