Centrifugal casting of bushes, rings and sleeves
KIGEMA tests the mechanical properties of our products and analyses their chemical composition using emission spectrometry. KIGEMA conducts penetration and ultrasonic tests and issues certificates of conformity with EN 10204-2.2, 2.3, 3.1B
Induction furnaces, modern casting equipment and mechanical processing machinery are used in the production process at Kigema. Our machine depot and technology ensure that the casts have excellent mechanical properties. Quality control confirms that our products are casting defect-free.
Technology and alloys used
KIGEMA applies centrifugal casting to produce bushes, rings and sleeves using all copper and aluminium alloys covered by global, European (German DIN EN 1982:1998-12) and Polish casting standards, and using special alloys too
Materials used include bronze, aluminium bronze, lead bronze, special bronze, brass and aluminium alloys.
The materials we use ensure:
Sleeves and plain bearings
Technology and alloys used
Kigema manufactures and regenerates used cast-steel and cast-iron sleeves. The company has a long track-record of manufacturing sleeve bodies made of brass and bronze.
Bearing alloys typically demonstrate the following properties:
The above properties may be achieved by using a particular alloy composition. These are typically tin alloys, tin and lead alloys, tinless alloys on lead backing, tin bronzes, lead bronzes, aluminium alloys. Their exact composition is specified by standards. The most important bearing alloys include:
Tin and lead alloys
containing approx. 5–20% tin, 60–85% lead, 5–17% antimony and up to 3% nickel , arsenic and cadmium admixture . The polish standard specifies ł16 (pbsn16sb16cu2), ł10as (pbsn10sb14cu3as) and ł6 (pbsn6sb6). These alloys are less expensive than tin, but have inferior strength and thermal parameters. They are used for less loaded and less critical bearings.
Containing 80–90% tin, 4–13% antimony and 3–6% copper. The alloy structure comprises a hard backing formed by needle-shaped cusn crystals, with soft occlusions of snsb alloy. Polish standard pn-82/h-87111 specifies two alloys of the type, namely ł89 (snsb8cu3) and ł83 (snsb11cu6). Tin bearing alloys are used for large diesel engine bearings.
Quality assurance takes the form of ultrasonic tests according to iso 4386-1 and penetration tests as per iso 4386-3.
Kigema manufactures various types of springs in many versions..
Finish types include
Springs manufactured by kigema are used e.G. In the automotive sector, by industrial machinery, agricultural machinery and furniture manufacturers.
Conventional power generation
Oil&gas, marine and shipbuildingPerfect mastery of the casting process using copper alloys, mainly with nickel, aluminium, iron and manganese, is the foundation of kigema’s range of products for these industries and renders the company a reliable partner for shipyards, oil&gas companies and oil platforms. These alloys offer high resistance to corrosion caused by sea water. Our offer also includes high-quality and high-precision rings, bushings, rods, discs, flange rings and fittings.
Railway and machine engineeringKigema works with producers of large-size machinery, such as hydraulic presses, mining equipment, pumps, locomotives, as well as train and locomotive maintenance providers. We supply rings, discs and sleeve made of bearing alloys, as well as other components according to customer documentation.
AerospaceThe properties of copper alloy, in particular low friction coefficient, resistance to corrosion, parameter stability at high temperatures, and no sparking, make it suitable for the aerospace industry. Kigema is a reliable partner for aircraft maintenance and repair providers.
Kigema has the expertise and machine depot
to perform machine processing of casts.
The company offers the following three types of processing:
Kigema holds certificates testifying to the quality and stability of our processes in all our operating areas. The company holds the quality management, environmental management, and occupational health & safety system certificates. In addition, we are a qualified supplier for many multinational groups from a number of industrial sectors.
Kigema sp. z o. o. 53-609 Wrocław, Fabryczna street 10, Poland
+48 71 356 54 79 l Headquarters, secretariat +48 71 356 50 09 l Sales, and marketing department, accounting department
Hohenlimburger Handelsgesellschaft mbH Spannstiftstr. 16, 58119 Hagen, Germany
Telefon: +49 / 23 34 / 44 528 11 Fax: +49 / 23 34 / 44 528 29
Heinrich Brinkmann Federn und Drahtwaren GmbH Spannstiftstr. 16, 58119 Hagen, Germany. Postfach 60 01 08, 58137 Hagen
Telefon: +49 / 0 23 34 / 44 528 22 Fax: +49 / 0 23 34 / 44 528 25