Alkai Phenolic Resin Ceramic Sand

Alkaline phenolic resin self-hardening sand Molten ceramic sand (ceramic sand) for alkali phenolic process, can produce stainless steel, manganese steel, high chromium cast iron and other wear parts, resin dosage of 0.8-1%. According to the size of the casting, can be used 30/50,40/70, 100 and other particle size of molten ceramic sand (ceramic sand).

Classification:

Molten Ceramic Sand (Ceramic Sand)

Key Words:

Ceramic Sand

Telephones： 0086-0398-3186627

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Product Description

Product Name: Alkai Phenolic Resin Ceramic Sand

Physical and Chemical Properties of Molten Ceramic Sand

grain shape	spherical	angular coefficient	≤ 1.1
Color	black brown	Al₂O₃	65-85%
Refractory temperature	≥ 1800 ℃	Fe₂O₃	≤5%
Accumulation specific gravity	1.95-2.05g /cm3	SiO₂	12~25%
true density	3.4g /cm³	TiO₂3	~4.5%
Thermal conductivity	(1200 ℃)5.27W/M·K	P H value	7~8
coefficient of expansion	(20~1000 ℃)6 × 10-deg/℃	Granularity	6 ~ 320 eyes (φ 0.053 ~ 3.36mm)

Molten ceramic sand (ceramic sand) commonly used particle size:
8/12, 12/20, 30, 20/40, 30/50, 40/70, 100, 140, 140/200, etc.

Characteristics of fused ceramic sand (ceramic sand)
1. The thermal expansion rate is small-the expansion rate of molten ceramic sand (ceramic sand ) after heating is 1/5 of silica sand and 1/2 of chromite sand. The castings produced have high dimensional accuracy, few veins and crack defects, and high casting yield;
2, The sand is spherical, the surface is smooth, so that the binder can be evenly covered and less consumption, sand liquidity is good, easy to spring, and good air permeability;
3, Is a neutral material-acid, alkali binder can be used;
4, High fire resistance-reduce the tendency of casting sand;
5. Good crushing resistance-ceramic sand is dense in material, high in compressive strength, low in crushing rate during repeated use, which reduces waste sand emissions and is conducive to environmental protection;
6, Cost-effective-compared with zircon sand, its price is only 20 to 40% of zircon sand. At the same time, because the sand is spherical, its surface area is small, the amount of binder can be reduced by 30% to 50%;
7. Wide range of applications-water glass sand, resin sand, precision casting, 3D printing, polishing and cleaning of copper and aluminum parts, etc.

Brief Description of Alkali Phenolic Resin Sand

Alkaline phenolic resin sand process, referred to as alkali phenolic process. In the process of pouring and cooling, there is no nitrogen, phosphorus, sulfur and other elements that can enter the molten steel to affect its quality, so there is basically no defect of sulfur seepage and needle-like pores in the surface layer of steel castings produced by furan resin. The free phenol and free aldehyde in alkaline phenolic resin are relatively low, and the curing agent is a mixture of glycerin acetate. In the process of sand mixing, modeling, core making, pouring and sand cleaning, it rarely releases toxic and irritating gases, which has no effect on the working environment. Alkaline phenolic resin is strongly alkaline, the acid consumption value of the raw sand is not high, can use alkaline raw sand, such as large-scale steel castings in the use of chromite sand.

Although ester hardening alkaline phenolic resin self-hardening sand has the above advantages and characteristics, this process also has some problems:

The strength of alkaline phenolic resin is relatively low, and the amount of resin added in the molding sand is relatively high, resulting in higher production costs; the poor regeneration performance of old sand increases the amount of new sand added, increases the emission of old sand, and increases The cost pollutes the environment.
In order to give full play to the advantages of alkaline phenolic resin self-hardening sand process and overcome its shortcomings, foundry workers have made remarkable achievements in the modification of resin/curing agent system, the use of special sand (such as ceramic sand), and the improvement of old sand regeneration process and equipment, so that this process can significantly reduce production costs, while producing high-quality steel castings efficiently and environmentally friendly. For example, a Japanese-funded enterprise in Anhui uses ceramic sand alkaline phenolic resin self-hardening sand process to produce wear-resistant parts such as stainless steel, manganese steel, high chromium cast iron, etc. The resin addition amount is 0.8-1%, and Japan's Xindong regeneration equipment is used. The LOI after regeneration can reach a minimum of 0.6, and the monthlyceramic sand supplement amount is 2-3%. The casting quality is obviously improved, and both economic and environmental protection are achieved.

Furan Resin Ceramic Sand

Ceramic Sand for Cold Core Box Casting

Relevant knowledge

Brief Description of Alkali Phenolic Resin Sand

02-19

2024

Brief Description of Alkali Phenolic Resin Sand

Chenghui

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0086-13809005912

Alkai Phenolic Resin Ceramic Sand

Chenghui

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