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Text Content

   
 * Home
 * Products
   
   Construction Accessories
   --Lifting Clutch System
   --Ring Clutch System
   Precision Casting
 * About Us
 * News
 * Contact Us


English

English


 * Home
 * Products
   * Construction Accessories
   * --Lifting Clutch System
   * --Ring Clutch System
   * Precision Casting
 * News
 * About Us
 * Contact Us
   


 * 
 * 
 * 
 * 

About Us


About Us Since its establishment, special and professional commitment to the
lost wax investment castings and the construction hardware of the precast
concrete industry. With advanced production equipment, well-equipped testing
facilities, strong technical force, perfect management, and a high-quality
assurance system. Read More

Product Center


LIFTING CLUTCH


LIFTING EYE ANCHOR


FOOT ANCHOR/SPHERICAL HEAD ANCHOR/LIFTING ANCHOR


DOUBLE HEAD ANCHOR


U ANCHOR



News Center

What Is Silica Sol Precision Casting? 2022-07-26 Silica sol (colloidal silica),
also known as silicic acid solution, is a colloidal dispersion of amorphous
silica aggregate particles in water. Silica sol has a wide water loss
temperature range, which not only destroys its bonding strength, but also makes
its three-dimensional structure more stable, resulting in higher bonding
strength. It is a good inorganic binder for precision casting.In the 1960s,
silica sol began to be used as a binder for precision casting. Since the 1990s,
due to the increasing pressure of environmental protection, silica sol has
gradually replaced the widely used highly polluted and expensive ethyl silicate
hydrolyzate. At present, polymer-enhanced quick-drying silica sol is widely used
as a binder in the world investment casting industry.Precision casting refers to
the general term for the process of obtaining castings with precise dimensions.
Investment casting is also known as lost wax casting. Its products are precise
and complex, close to the final shape of the part, and can be used directly
without machining or a small amount of machining. This is an advanced
near-net-shape process. The process includes: selecting a suitable investment
material (such as paraffin) to make the investment; repeating the steps of
dipping the refractory coating (the main component is silica sol) and spraying
the refractory sand on the investment, hardening the outer shell and drying;
melting the inner investment, Obtain the mold cavity; bake the shell to obtain
sufficient strength and burn off the remaining investment material; pour the
required metal material; solidify, cool, shell, and clean the sand to obtain a
high-precision finished product. Silica sol is used for precision casting. Due
to its good bonding ability and filling performance, the fabricated shell has
high strength, high gloss and easy demoulding, and is widely used in this field.
According to the specific use requirements, it is divided into surface silica
sol and back silica sol, which consumes a lot of money.
The Same Is Precision Casting, Why Is It So Expensive? 2022-07-26 Foundries
often encounter buyers inquiries when selling castings. It is also a casting.
Why are silica sol precision castings so expensive? Here, we briefly talk about
the core competitiveness of silica sol casting.There are many types of casting.
Simply speaking, it can be divided into three types: sand casting, metal
casting, and lost wax. Silica sol casting is one of the lost wax methods. The
lost wax method is to use wax to copy the object to be cast, and then immerse it
in a pool containing sand (powder), so that the surface of the object is covered
with a layer of sand outer film, wait for the surface to dry, and then repeat
the steps many times, so that the outer surface is covered with sand. The
membrane supports the casting process, then dissolves the wax in the mold and
pulls it out of the mold. Subsequent heating at high temperature increases the
hardness of the casting.Compared with the water glass process, the wax injection
equipment of the silica sol process is imported hydraulic equipment, the
dewaxing equipment is dewaxing furnace electric dewaxing, the wax mold is
imported warm wax, and the shell-making sand is imported with a higher mesh
number. Zircon sand and zircon powder, it can be seen that the price of
equipment and raw materials for the silica sol process is very high, which will
also increase the price of castings. Not only that, silica sol casting has
strict regulations on the shell making environment and wind speed. For some
special castings, such as slender and porous castings, the drying time of the
castings should be extended accordingly; the additives selected in the silica
sol casting process The high price of silica sol castings also increases the
price of finished products.Since the price of silica sol precision casting is so
high, why do people still choose it? This is inseparable from its high market
competitiveness.Silica sol precision casting has good adhesion and filling
performance, high shell strength and gloss, surface roughness can be reduced to
Ra3.2-6.3, high temperature resistance, resistance to deformation. Silica sol is
very suitable for the casting of small castings, the surface will be very fine,
the roughness will be low, and the tolerance size will be well controlled. The
resulting castings do not require reprocessing or require only a small amount of
machining. At the same time, the maintenance workload of silica sol castings
during storage is small, which greatly shortens the delivery cycle. In fact, it
is the same in any industry! If you care about quality, please respect its
price; if you care about price, please ignore its quality.


Contact
 * Company:Gaomi Gongji Precise Metal Co., Ltd.
 * Contact:LuQi
 * Tel:8613592099775
 * Phone:8613592099775
 * WhatsApp:+8613592099775
 * Email:productquotationvip@gmail.com
 * Address:No.19,The Second Road Of Chengxi Industrial Park, Mishui Sub-District
   Office, Gaomi City, Shandong P.R., China

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