Material: Stainless Steel, Carbon Steel, Alloy Steel Process: Lost Wax Casting + CNC Precision Machining Weight: 1.90 kg Application: Camlock
Austenitic stainless steel should be solid-solution treated before use, so as to maximize the solid solution of various precipitates such as carbides in the steel into the austenite matrix, while also homogenizing the structure and eliminating stress, so
Steel Lost Wax Investment Casting Factory who offer OEM Custom Services, CNC Precision Machining, Surface Treatment and Heat Treatment.
Austenitic stainless steel can also produce castings. In order to improve the fluidity of molten steel and improve casting performance, the alloy composition of cast steel should be adjusted by increasing the silicon content, enlarging the range of chromium and nickel content, and increasing the upper limit of the impurity element sulfur.
Austenitic stainless steel should be solid-solution treated before use, so as to maximize the solid solution of various precipitates such as carbides in the steel into the austenite matrix, while also homogenizing the structure and eliminating stress, so as to ensure excellent corrosion resistance and mechanical properties. The correct solution treatment system is water cooling after heating at 1050~1150℃ (the thin parts can also be air cooled). The solution treatment temperature depends on the degree of alloying of the steel: Molybdenum-free or low-molybdenum steel grades should be lower (≤1100℃), and higher alloyed grades such as 00Cr20Ni18Mo-6CuN, 00Cr25Ni22Mo2N, etc. should be higher (1080~1150) ℃).
Austenitic 304 stainless steel steel plate, which is said to bring strong anti-rust and corrosion resistance, and has excellent plasticity and toughness, which is convenient for stamping and forming. With a density of 7.93 g/cm3, 304 stainless steel is a very common stainless steel, also known as 18/8 stainless steel in the industry. Its metal products are resistant to high temperatures and have good processing properties, so they are widely used in industry and furniture decoration industries and food and medical industries.
In the investment casting process, the water glass binder and coating have stable performance, low price, short shell-making cycle and convenient application. The water glass shell making process is suitable for the production of investment castings such as carbon steel, low-alloy steel, cast iron, copper and aluminum alloys that require less surface quality.
Water glass, also known as Sodium Silicate, is a kind of soluble alkali metal silicate, which is glassy in solid state and forms a water glass solution when dissolved in water. According to the difference of the alkali metals contained, there are two types of potassium water glass and soda water glass. The latter is easily soluble in water, contains less impurities, and has stable performance. Therefore, the water glass for investment casting is sodium water glass, namely Na20·mSiO2, A transparent or translucent colloidal aqueous solution formed after hydrolysis. The main chemical components of water glass are silicon oxide and sodium oxide. In addition, it also contains a small amount of impurities. Water glass is not a single compound, but a mixture of multiple compounds.
According to the different binders for shell building, the investment casting could be divided into silica sol binder investment casting, water glass binder investment casting and the investment casting with their mixtures as binder materials.
Investment casting (lost wax casting) is a method of precision casting complex near-net-shape details using replication of wax patterns. Investment casting or lost wax is a metal forming process that typically uses a wax pattern surrounded by a ceramic shell to make a ceramic mold. When the shell dries, the wax is melted away, leaving only the mold. Then the casting component is formed by pouring molten metal into the ceramic mold.
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