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Lost foam casting paint for chromium-containing cast iron and preparation method thereof

A technology of lost foam casting and chromium cast iron, which is applied in casting molding equipment, coatings, casting molds, etc. It can solve the problems of insufficient suspension and strength, irritation of the upper respiratory tract, etc., and achieve good suspension, good heat insulation and resistance Thermal, good affinity effect

Active Publication Date: 2014-12-03
MAANSHAN HUADA METALLURGICAL & MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problems of the above-mentioned coatings are that the suspension and strength are not enough, and the coating ingredients contain harmful ingredients, and n-octanol is irritating to the eyes, skin, mucous membranes and upper respiratory tract

Method used

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  • Lost foam casting paint for chromium-containing cast iron and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation process of the lost foam casting coating for chromium-containing cast iron of the present invention is as follows:

[0033] 1) Nanoscale K 2 OAl 2 o 3 6SiO 2 Composite powder preparation:

[0034] ZrOCl 2 .8H 2O and water make ZrOCl with a concentration of 0.2mol / L 2 Aqueous solution; dilute 25% ammonia water 10 times as precipitant;

[0035] Under the conditions of continuous stirring at an ultrasonic frequency of 50kHz and a power of 400W, the ZrOCl 2 Add the aqueous solution dropwise to the precipitant at a rate of 2mL / min, and control the pH of the solution to be 9; after the dropwise addition, continue to stir for 3h, then leave it to age for 6h to obtain Zr(OH) 4 Hydrosol A is ready for use;

[0036] 100g of FeCl 3 ·6H 2 O with 37gFeCl 2 4H 2 O mixed, 214g dextran T-40 was dissolved in 1500ml pure water under nitrogen atmosphere, and then FeCl was added 3 ·6H 2 O and FeCl 2 4H 2 Mixture of O; Stir with a constant temperature magnet...

Embodiment 2

[0041] Step 1) Medium Nanoscale K 2 OAl 2 o 3 6SiO 2 Composite powder preparation: hydrosol A, colloid B and K 2 O·Al 2 o 3 ·6SiO2 2 The powder mixing mass ratio is 0.6:1:1.0.

[0042] Step 3) Preparation of lost foam casting coating for chromium-containing cast iron: the weight percentage of each component is: nano-scale K 2 O·Al 2 o 3 ·6SiO2 2 Composite powder 15-20%, slag powder 12%, sodium dodecylbenzenesulfonate 0.2%, sodium bentonite 5%, silica sol 2.5%, 3-methyl-2-butene-1-alcohol Ester compound solution 8%, quartz powder the rest.

[0043] All the other processes are the same as in embodiment one.

Embodiment 3

[0045] Step 1) Medium Nanoscale K 2 OAl 2 o 3 6SiO 2 Composite powder preparation: hydrosol A, colloid B and K 2 O·Al 2 o 3 ·6SiO2 2 The powder mixing mass ratio is 0.6:1:1.1.

[0046] Step 3) Preparation of lost foam casting coating for chromium-containing cast iron: the weight percentage of each component is: nano-scale K 2 O·Al 2 o 3 ·6SiO2 2 Composite powder 17%, slag powder 10%, sodium dodecylbenzenesulfonate 0.17%, sodium bentonite 4%, silica sol 1.5%, 3-methyl-2-buten-1-ol acetate Composite solution 6%, quartz powder the rest.

[0047] All the other processes are the same as in embodiment one.

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Abstract

The invention provides a lost foam casting paint for chromium-containing cast iron and a preparation method thereof. The paint comprises the following components in percentage by weight: 15-20% of nano K2O. Al2O3.6SiO2 composite powder, 8-12% of blast furnace slag powder, 0.15-0.2% of sodium dodecyl benzene sulfonate, 2-5% of sodium bentonite, 1-2.5% of silica sol, 5-8% of 3-methyl-2-butenyl-1-ol acetate composite solution and the balance of quartz powder. The blast furnace slag comprises the following components in percentage by weight: 36-40% of CaO, 13-15% of Al2O3, 6-9% of MgO, 0.6-0.9% S, 0.3-0.5% of FeO and the balance of SiO2. The particle size of the K2O.Al2O3.6SiO2 composite powder is 80-100 nm, the particle size of the sodium bentonite and blast furnace slag powder is 80-100 mu m, and the particle size of the quartz powder is 1-5 mm.

Description

technical field [0001] The invention belongs to the field of casting, and relates to a lost foam casting coating for chromium-containing cast iron and a preparation method thereof. Background technique [0002] Application No. 201110228516.8 discloses a coating for lost foam casting cast iron and its manufacturing process, in which quartz powder, graphite powder (lead powder), flake graphite powder, lithium-based bentonite, phenolic resin, carboxymethyl Cellulose, latex, and n-octanol can be obtained by adding hot water in a specified proportion and stirring in a specified order to obtain usable coatings. [0003] Application No. 201210319941.2 relates to a cast iron lost foam coating and its preparation method. The coating includes the following components: 45-55 parts by weight of high alumina bauxite clinker, 20-30 parts by weight of quartz sand, 1-3 parts by weight of sodium bentonite, 0.5-1.5 parts by weight of CMC, 0.5-1.5 parts by weight of polyvinyl alcohol (PVA), 0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 陆万玉杨加祥夏治寨
Owner MAANSHAN HUADA METALLURGICAL & MACHINERY
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