Stainless steel casting surface finish than the general casting of the high, generally up to Ra.1.6 ~ 3.2μm. Can meet customer requirements to meet the electrical hardware parts, in line with the EU ROHS testing standards, precision casting non-magnetic stainless steel can eliminate the magnetic interference instrument. You can cast in the product of fine text or pattern, enjoy your company and product image.
Electric bicycle metal castings, architectural hardware casting surface finish is high, generally up to Ra.1.6 ~ 3.2μm. According to customer requirements to meet the electrical hardware parts, in line with the EU ROHS testing standards, silica sol casting precision casting process is transparent, widely used in sewing, textile, printing, metal and other industries.
Hardware casting surface finish is high, generally up to Ra.1.6 ~ 3.2μm. Can meet customer requirements to meet the electrical hardware parts, in line with the EU ROHS testing standards, precision casting non-magnetic stainless steel can eliminate the magnetic interference instrument. You can cast in the product of fine text or pattern, enjoy your company and product image.
Precision investment casting starts with the engineering & production of a casting mould, also known as a wax tool. This mould is home-developed by CIREX engineers and serves as a ‘negative’ of the final casting. With use of a casting mould a wax model can be sprayed with a very accurate dimension and an excellent contour sharpness. These wax models are glued together onto a so-called wax ‘tree’ on which a casting funnel is mounted. In a later stage of the process, steel is poured into the funnel. Depending on the size of the series, the mould is installed either onto a manual or automatic press.
After the wax models are glued together, the tree is given a fireproof ceramic shell. This shell is constructed by repeatedly submerging the tree (up to 7 or 9 times) in a slurry and sprinkle it with ceramic sand. The ceramic layers are then hardened in a drying chamber, exposed to air. After the layers have been formed and dried, the wax is melted out of the ceramic tree by using steam (120°C) in an autoclave. This is why it is called ‘lost wax casting’. The molten wax can be regenerated and is reusable. The ceramic tree is then baked at a high temperature (1100°C) and reaches its final strength through the sintering process. Wax leftovers are burned up during this process.
The desired steel alloy is melted in a large furnace and brought to casting temperature. The ceramic tree is, at the same time, heated in a oven to prevent thermal shocks during the casting process. After the tree has been heated, it is removed from the oven by a robotic arm and the steel is poured in by means of counter gravity. When the trees have been cast, they have to be cooled on a cooling conveyor (with nitrogen). The trees are then removed from their ceramic shells, by breaking the shell with a fully-automatic knock-off hammer. This removes most of the ceramic.
The remainder of the ceramic is removed in the Finishing Department by means of steel, sand and/or water blasting. The next step involves sawing or vibrating the products off from the steel tree. The steel leftovers are sorted on alloy and may be melted again during the next casting badge. Finally, the ingate is sanded off, the product is machined, calibrated or heat-treated when necessary. After the final inspection, the products are ready for shipment to another satisfied CIREX customer.
Investment casting, the modern refine and hitech variety of the ancient lost form casting, this process is used to build aircraft engines for civilian and military purpose.
Changge Xinran Machinery Co,Ltd is a supplier of precision castings which are cast by using the lost wax technique. Because of these specific and high demands, special alloys are often utilised for Lost wax casting.
XiangXin is one of the largest lost wax foundries in the world. Through our decades of experience with investment casting, we can assure efficiently produced high quality castings. With foundries in the Netherlands and the China.
Some of our work we have done earlier