Electrical steel, also called lamination steel OR silicon electrical steel.Itis specialty steel tailored to produce certain magnetic properties, such as a small hysteresis area (small energy dissipation per cycle, or low core loss) and high permeability.These strips are called laminations when stacked together to form a core

CRGO or Cold Rolled Grain Oriented Steel is available in various grades (generally called M3, M4, M5& M6).

                                    Electrical steel is an iron alloy which may have from zero to 6.5% silicon (Si:5Fe). Commercial alloys usually have Silicon content up to 3.2% (higher concentrations usually provoke brittleness during cold rolling). Manganese and aluminium can be added up to 0.5%.

Silicon significantly increases the electrical resistivity of the steel, which decreases the induced eddy currents and narrows the hysteresis loop of the material, thus lowering the core loss.[1] However, the grain structure hardens and embrittles the metal, which adversely affects the workability of the material, especially when rolling it. When alloying, the concentration levels of carbon, sulfur, oxygen and nitrogen must be kept low, as these elements indicate the presence of carbides, sulfides, oxides and nitrides. These compounds, even in particles as small as one micrometer in diameter, increase hysteresis losses while also decreasing magnetic permeability. The presence of carbon has a more detrimental effect than sulfur or oxygen. Carbon also causes magnetic aging when it slowly leaves the solid solution and precipitates as carbides, thus resulting in an increase in power loss over time. For these reasons, the carbon level is kept to 0.005% or lower. The carbon level can be reduced by annealing the steel in a decarburizing atmosphere, such as hydrogen.

Introduction

Angle rings and caps are needed in the design of the end insulation of transformers.Angle rings form the barriers of the end of the windings. The products of this category offer a selection between sophisticated and economical solutions, both meeting the technical requirements.

WE Offer wide range of Angle Ring And Caps Ranging From

1.Machine moulded angle rings and caps

360° blanks can be produced for a wide range of diameters. Machine moulded angle rings and caps are fabricated from mouldable sheet material.

2.Pressed angle rings and cap sectors

Pressed sectors are fabricated semi automatically from wet sheet material. This product covers the range of larger diameters. Due to the specific properties of the material and the moulds a wide range of edge radii can be offered.

PTC OFFERS WIDERANGE OF PRODUCTSAND SERVICES TO THE TRANSFORMER MANUFACTURERS INCLUDING CRGO LAMINATION IN DIFFERENT DIMENSIONS.WE HAVE BEEN SERVING OUR VALUABLE CUSTOMERS FOR MORE THAN 10 YEARS. 

Laminations may be cut to their finished shape by a punch and die, or in smaller quantities may be cut by a laser, or by wire erosion.

AT PTC WE offer transformer lamination for both Distribution and Power transformer.WE have a dedicated automatic core cutting plant with automatic slitting line.

We manufacture Transformer Core Laminations from Cold Rolled Grain Oriented (CRGO) steel in grades M2, M3, M4, M5, M6 and also the Hi-B CRGO grades of ZH, ZDKH, ZDMH, ORSI-H, TCH-O, TCH-1 etc. WE USE ONLY PRIME MATERIAL AS WE BELIVE THAT QUALITY IS TH FOREMOST PRIORITY IN TRANSFORMER INDUSTRY

MAGNETIC PROPERTIES:

The magnetic properties of electrical steel are dependent on heat treatment, as increasing the average crystal size decreases the hysteresis loss. Hysteresis loss is determined by a standard test and for common grades of electrical steel may range from about 2 to 10 watts per kilogram (1 to 5 watts per pound) at 60 Hz and 1.5 tesla magnetic field strength. Semi-processed electrical steels are delivered in a state that, after punching the final shape, a final heat treatment develops the desired 150-micrometer grain size. The fully processed steels are usually delivered with insulating coating, full heat treatment, and defined magnetic properties, for applications where the punching operation does not significantly degrade the material properties.

We are the leading manufacturers of torroidal cores,WE OFFER TORROIDAL CORES IN DIFFERENT DIMENSIONS AND Shapes Depending on customers need .

Oval, rectangular, cross-section, cut (air gapped) torroidal cores are offered by us.

We use only 100% prime materials for ensuring very low losses for our TC'S,Our plant are well encorporated with latest machineries and technical experts for best quality products.

WE have dedicated Testing facilities for all our products.

PTC produce special stacked cores for Large, Medium and High voltage reactors from grain oriented magnetic steel according to customer design.

These magnetic reactor (core packet)disc are used in manufuring of Shunt Reactors.Shunt reactors are important components for the development of UHV power systems since they compensate large capacitive currents generated by HV transmission lines over great distances.

We have best in class manufacturing and testing facility.

WE ARE THE LEADING MANUFACTURERS OF MAGNETIC REACTOR DISC(SHUNT REACTOR DISC).WE HAVE LATEST MANUFACTURING AND TESTING FACILITIES FOR PRODUCTION OF MAGNETIC REACTOR DISC.