【覆膜砂介绍】
铸钢覆膜砂是一种具有优异高温性能和综合铸造性能的新型覆膜砂产品，铸钢覆膜砂具有强度高、流动性好、固化速度快、SiO2含量多、耐高温性强、发气量低、流动性好等特点，是一种广泛应用于阀壳、缓冲器接头、钢轴、工程挖掘机、集装箱角件等铸钢件的造型材料。新型覆膜砂产品广泛用于：阀壳、缓冲器接头、钢轴。
Cast steel is a kind of excellent high temperature performance of precoated sand and casting performance of new products of precoated sand, cast steel with high strength of precoated sand, good liquidity, curing speed, more content of SiO2, strong resistance to high temperature, low gas evolution, liquidity is good wait for a characteristic, is a widely used in joint valve shell, buffer, steel shaft, the modelling of engineering excavators, such as pieces of container Angle steel material.
New products are widely used in: of precoated sand shell joint, buffer, steel shaft.
【覆膜砂特点】
1、原砂SiO含量高，粒度分部合理，能有效防止铸钢件粘砂。
2、特殊铸钢件可采用替代锆砂的非石英质砂。
3、原砂进行选形、相变处理、活化处理能大大提高覆膜砂的强度。
4、降低树脂和固化剂用量，复合树脂有效提高冷、热强度，避免皮下气孔。
5、复合固化剂使覆膜砂在制芯、浇注过程中不产生氨气，改善工作环境。
1, the original high sand content of the SiO, granularity division is reasonable, can effectively prevent steel adhering sand.
2, special steel can be used to replace the quartz sand quality of zircon sand.
3, the original sand to select the shape, phase change process, activation treatment can greatly improve the strength of the coated sand.
4, to reduce the dosage of resin and curing agent, composite resin effectively improve cold and hot strength, prevent subcutaneous blowhole.
5, composite curing agent to make coated sand in core, pouring process does not produce ammonia, improve the working environment.
【覆膜砂用途】
1、普通类覆膜砂；由石英砂、热塑性酚醛树脂、乌洛托品和硬脂酸钙组成，不加有关添加剂，适用于生产一般铸铁件。
2、高强度低发气类覆膜砂；是普通覆膜砂的更新换代产品，通过加入有关添加剂和采用新工艺配制而成，其强度比普通覆膜砂高30%以上，发气量也明显降低，适用于生产复杂精密铸铁件。
3、高温类覆膜砂；在高温下具有强度高、耐热时间长的特性，适用于生产汽车发动机缸体、缸盖、集装箱角等复杂薄壁铸铁件。
4、易溃散类覆膜砂；具有较好的强度，同时具有优异的低温溃散性能，适用于生产有色金属铸件。
5、其它特殊要求覆膜砂；为适应不同产品的需要，开发出了系列特种覆膜砂如：离心铸造用覆膜砂、激冷覆膜砂、湿态覆膜砂、防粘砂、防脉纹、防橘皮覆膜砂等。
Introduction of precoated sand
Mainly adopts the high quality of precoated sand selected natural quartz sand as the original sand, thermoplastic phenolic resin, methenamine and strengthening agent as raw materials.According to the different technical requirements of users, the curing speed, membranous, liquidity, melting, casting surface roughness ratio of appropriate adjustments, storage, etc.Are cars, tractors, hydraulic parts, etc. One of the best molding materials.
characteristics of precoated sand
1, vibration deoxidization, high strength, low gas, low expansion;
2, good, high casting surface finish;
3, can't afford to shell mold layer, good thermal stability, good thermal conductivity, good liquidity, the casting surface smooth;
4, high strength, high temperature resistant, low expansion, demoulding, good resistance to adhering sand;
5, uniform shell hulling, curing speed;
The use of precoated sand
1, the common types of precoated sand;Consists of quartz sand, thermoplastic phenolic resin, methenamine and calcium stearate, do not add the additive, is suitable for the production of common cast iron parts.
2, high strength and low gas coated sand;The update products are ordinary coated sand, by adding the additives and to adopt new technology, its strength is higher than ordinary coated sand by more than 30%, gas evolution also significantly reduced, is suitable for the production of complex precision castings.
3, high temperature coated sand;With high strength at high temperature and long heat time features, applicable to the production of automobile engine cylinder block, cylinder head, such as container corner complex thin wall castings.
4, easy pieces of precoated sand;Has good strength, excellent low temperature melting performance at the same time, is suitable for the production of non-ferrous metal casting.
5, and other special requirements of precoated sand;In order to adapt to the needs of different products, developed a series of special coated sand such as centrifugal casting resin coated sand, chilling coated sand, the adhering sand, wet coated sand, veins, orange peel, etc of precoated sand prevention.
【联系方式】
厂 名：巩义市千家信耐材有限公司
厂 址：巩义市陇海路185号
销售经理：李梦怡
联系电话：13592657119
网 址：https://shop1418402765774.1688.com/
Contact us
Gongyi city factory name: thousands of letters refractory material co., LTD
Factory address: gongyi city longhai road 185
Sales manager: Li Mengyi
Contact phone number: 13592657119
Web site: https://shop1418402765774.1688.com/
【产品图片】
【现场图片】
【联系方式】
厂 名：巩义市千家信耐材有限公司
厂 址：巩义市陇海路185号
销售经理：李梦怡
联系电话：13592657119
网 址：https://shop1418402765774.1688.com/