Electrical Stampings Punching
We efficiently cater to lamination requirements of its clients with the help of a number of high speed presses varying from 100 ton to 300 ton with speeds up to 400 SPM for lamination punching. Our fully automatic stamping lines are imported from one the biggest and most professional mechanical press machine manufacturers in China and are equipped with auto-skewing & auto stacking controllers , high tech de-coilers, S-type material straightener & geared feeders for running ultra-precise progressive tools.
The company has a variety of ultra-precise carbide progressive lamination stamping tools for various motor cores, capable of manufacturing auto-stitched & auto-skewed cores and operating at high speeds.
To guarantee tools with highest precision, long life and great stability, we have ties ups with the biggest & most professional progressive tool manufacturers in China who have the best of the equipments & infrastructure to produce the most precise tools as per our customers requirements.
Decarburization Annealing Bluing
We have a state-of-art Hi Perming Facility for the decarburization of Stators in order to develop a uniform grain structure in order to reduce the Watt Loss of the material so that the efficiency of motors could be enhanced significantly.
Historically, fully-processed steel was the material of choice for transformers and motors. The company has developed alternatives. Since magnetic performance is vital, the company has invested in the most advanced annealing facilities in the world. Precise, computer-controlled furnaces ensure proper grain structure growth for lower core loss and improved permeability. The process also increases inter-laminar resistance by adding an oxide coating and relieves stamping stresses
The Stators are heat treated in a specific atmosphere having a composition such that the carbon level is lowered to a few thousandths of a percent in order to minimize hysteresis losses. Another advantage is the production of a thin, adherent coating of iron oxide on the lamination, having a low electrical conductance. This effectively insulates the laminations from one another and prevents the flow of eddy currents which would result in large electrical losses. The process results in the reduction of carbon percentage & core loss, improves grain size structure and induces desired coating thickness on stampings as a result of decarburizing & bluing of metal.
The stampings manufactured at the end confirms a core loss of 5.5 to 6 watts per kg at 1.5 Tesla at 50 cycles/sec.
Our sophisticated annealing facility adds up to tangible advantages for our customers. At Kumar Precision Stampings, you may effectively substitute more favorably priced, semi-processed electrical steel for expensive, fully processed electrical steels due to our advanced annealing capability. From these significant cost savings to quality improvements, our annealing process provides the ultimate benefits to our customers.
Aluminum Die Casting
We have an extensive in house die casting facility with numerous die casting machines (80T to 200T), both horizontal & vertical, capable of casting rotors of varied sizes. These high-tech machines have short shot cycle and have high quality imported multi-quality tools running on them for increased production.
These precise machines are well complemented by our high-tech furnaces which are very closely monitored to ensure high quality molten metal, which translates to both high conductivity and tight control of porosity.