AD Krušik – Precision Casting Mionica. AD Krušik – Precizni liv Most demanding/sophisticated internal and external configurations Unsurpassed flexibility

AD Krušik – Precision Casting Mionica

AD Krušik – Precizni liv

Most demanding/sophisticated internal and external configurations Unsurpassed flexibility for construction Narrow dimensional tolerance Very compact and homogeneous structure Very good mechanical characteristics Excellent quality of surfaces (Ra 2-3.2 nm) in all steels, grey and nodular casts and copper-based alloys

Why precision casting?Why precision casting?


About us

• Established in 1962, within the Krušik, Valjevo plant. Since 1980, the Established in 1962, within the Krušik, Valjevo plant. Since 1980, the Company is located at the present site in Mionica, working under the Company is located at the present site in Mionica, working under the licence of PMI Cleveland, USA. licence of PMI Cleveland, USA.

• The company Krušik – Precision casting is The company Krušik – Precision casting is a a specialized foundryspecialized foundry,, manufacturing primarily steel and nodular castings. In cooperation with the manufacturing primarily steel and nodular castings. In cooperation with the Institute of "Vinča", we are able to cast other specialized alloys on the basis Institute of "Vinča", we are able to cast other specialized alloys on the basis of cobalt, titanium, etc.of cobalt, titanium, etc.

• To date, the manufacture was largely focused on the military industry, and To date, the manufacture was largely focused on the military industry, and less on the textile and automotive industry. Today, we are manufacturing less on the textile and automotive industry. Today, we are manufacturing the castings for: aviation, armaments industry, automotive industry, the castings for: aviation, armaments industry, automotive industry, computers, electric motors and components/groups, electronics, electronic computers, electric motors and components/groups, electronics, electronic and electrical systems, food industry, gas turbines, machine tools and and electrical systems, food industry, gas turbines, machine tools and accessories, medical equipment and instruments, equipment for processing accessories, medical equipment and instruments, equipment for processing industry, optical and measure instruments industry, hydraulics and industry, optical and measure instruments industry, hydraulics and pneumatics, industry of textile and sewing machines, and similar.pneumatics, industry of textile and sewing machines, and similar.

• Modern technology allows us to offer castings from 0.5g to 10kg.Modern technology allows us to offer castings from 0.5g to 10kg.• The company is organized as a corporation.The company is organized as a corporation.• The size of the company's land is 64,362 qm, thereof built 10,479 qm.The size of the company's land is 64,362 qm, thereof built 10,479 qm.• The plant is situated The plant is situated alalonongg the main road Belgrade - Valjevo (80km). the main road Belgrade - Valjevo (80km).

CIMOS d.d.Proizvodni center Koper, Koper

P.P.C. BUZET, d.o.o.Proizvodni center Buzet, Buzet

P.P.C. BUZET, d.o.o.Proizvodni center Roč, Roč

LABINPROGRES TPS, d.o.o., Labin

CIMOS d.d.Proizvodni center Senožeče, Senožeče

CIMOS TAM Ai, d.o.o., Maribor

LIVARNA VUZENICA, d.o.o. , Vuzenica

CIMOS TITAN, d.o.o., Kamnik

LITOSTROJ E.I., d.o.o., Ljubljana

NT FORGING, d.o.o., Novi travnik

CIMOS TMD CASTING, d.o.o., Zenica

CIMOS TMD Ai, d.o.o., Gradačac

CIMOS SREBRENICA, d.o.o., SrebrenicaBA)

KRUŠIK – PRECIZNI LIV, d.o.o., Mionica

FAM SEČANJ Ai, d.o.o., Sečanj

LIRA, d.o.o., Kikinda

LIVNICA KIKINDA A.D., d.o.o., Kikinda

LIVNICA KIKINDA Ai, d.o.o., Kikinda

TPS, d.o.o., Novi Kneževac

LETANA, d.o.o., Ljubljana

LIP, d.o.o., Ljubljana

Cimos Group - Geographic location

LITOSTROJ ENERGIJA, d.o.o., Ljubljana


CORPORATE STRATEGY• Heightened presence in the automotive market• Improvement in competitiveness through the higher level of process

automation and modernization• Creating partner relations with customers, cooperating contractors and

suppliers• Raising the technical level of know-how in our staff• Continual concern in ecology

STRATEGIC GOALS• Increasing the volume of production• Expanding the range of production to automotive, medical equipment and

armaments industry• Increasing the gross value added per Employee• More efficient employment of machinery and human resources• Development of information system

Strategy


• Currently installed capacities comprise 4,000,000 pcs p.a. (four million products/pieces) calculated on the basis of average weight 100g/piece.

Products: • Hydraulics and pneumatics industry 18%• Agricultural machines manufacturers 17%• Armaments industry.......................15%• Automotive industry.......................10%• Industry of orthopaedic appliances ... 5%• Other............................................28%

Production Capacities


1. WAX INJECTIONModelling is done by a wax pattern (replica) of the casting to be

manufactured.These replicas are called patterns ('models').

2. PHASEPatterns are put on the central wax runner bar to form an assembly of castings referred to as a 'tree'.

3. BUILDING THE SHELLThe shell is built by dipping the assembly (tree) into a ceramic slurry, and theninto a bath of very fine sand. During this procedure, up to eight coats may be

built.

4. WAX REMOVALAs soon as the ceramic dries, the wax can be removed by firing, whereby a

negative mold of the tree within the shell is made.

Casting technology


5. CONVENTIONAL CASTINGIn a conventional process, the molten metal is poured into the shell by way of

gravity casting. When the metal cools down, the parts and castings, the runner bar and the side cup are merged into one fixtured (gate) casting.

6. BREAKING-OFF THE SHELL When the metal cools down and hardens, the ceramic shell is broken off by vibration

or water jet.

7. DEGATE GRINDINGParts are cut off from the central runner bar by friction saw or waterjet.

8. FINISHED CASTINGS After minor working operations (finishing), the metal castings identical to the original

wax patterns are ready to ship to the customer.

Casting technology


Casting technology


Products - armament components


Products - other components


Products - other components


This technology allows to manufacture large batches of castings of a very complex forms which can hardly (or impossible) be obtained by conventional process or by machining.

Thanks to the characteristics of ceramic material and working techniques, it is possible to reproduce fine details, achieve great dimension precision and the quality of surface that cannot be obtained by other casting procedures or in any other way.

By applying ceramic and degradable cores and a combination thereof we can produce castings of most sophisticated forms (curved blind slots/holes, threads, narrow grooves, etc.)

Using the hollow runner bar, we achieve an optimal layout of patterns which in addition to other advantages, provides equal terms for all the castings and thereby equal characteristics.

Combining and gluing several wax or plastic patterns, we can obtain very complex parts and reduce the cost of working and control. Castings so manufactured require little machining, or none at all.

Pouring the metal into shells heated at 1050°C allows for an even crystallization and as a result, a homogeneous and compact structure that guarantees a high level of mechanical characteristics.

Thanks to casting in heated shells and vacuum chambers we obtain castings with very thin walls - 1mm.

Precision casting further allows you to eliminate or reduce the costs for equipment that would be indispensable if you were casting in the conventional way.

Why precision casting?


• Measurement laboratories• chemical• metallurgic• dimensions

Our chemical and metrology lab, with rich and modern equipment, provides for a comprehensive and complete control of castings in terms of chemical composition, homogeneous structure, mechanical characteristics and dimension precision.These analyses are made by spectro-equipment, X-ray, MAGNAFLUX, penetrants, optical microscope, optical comparators and other indispensible equipment and measuring appliances.

QUALITY SYSTEM

Quality

ISO 9001/2000

QUALITY CONTROL


• Casting of external edge R 0.25mm max.• Casting of internal corners R 0.25mm min.• Minimal addition for machining: 0.4 mm on surfaces to be machined• Quality of the surface of the casting N8

"Krušik'' – precision casting standards


Dimensions(mm)

Dimension tolerance(mm)

Axial tolerance (mm)

fromto

Accuracy level

D1normal

D2fine

D3border

D1normal

D3border

0-6 ±0.10 ±0.08±0.06

±0.25 ±0.166-10 ±0.12 ±0.10

10-14 ±0.15 ±0.12±0.09

14-18 ±0.20 ±0.14

18-24 ±0.25 ±0.17 ±0.12±0.32 ±0.20

24-30 ±0.30 ±0.20 ±0.14

30-40 ±0.37 ±0.25 ±0.17±0.50 ±0.30

40-50 ±0.44 ±0.30 ±0.20

50-65 ±0.52 ±0.38 ±0.23±0.71 ±0.45

65-80 ±0.60 ±0.46 ±0.27

80-100 ±0.68 ±0.53 ±0.30±0.90 ±0.60

100-120 ±0.76 ±0.60 ±0.33

120-140 ±0.84 ±0.65 ±0.35

±1.15 ±0.85140-160 ±0.92 ±0.72 ±0.38

160-180 ±1.02 ±0.80 ±0.40

180-200 ±1.12 ±0.88 ±0.43

±1.80 ±1.00200-225 ±1.28 ±0.95 ±0.47

225-250 ±1.44 ±1.05 ±0.50

Length measures tolerances (VDG P690 norm)


Dimensions(mm)

Tolerances of form and position

from to D (mm)

0 50 ±0.30

correctness?51 130 ±0.50

131 255 ±1.00

0 50 ±0.30 even surface/leveln

ess?51 130 ±0.50

131 255 ±1.00

0 50 ±0.30

rectangularity?51 130 ±0.75

131 255 ±1.25

0 50 ±0.30

parallelism51 130 ±0.75

131 255 ±1.25

0 50 0.30

symmetry51 130 0.75

131 255 1.25

Tolerances of form and position


Contact

AD KRUŠIK – Precizni liv Toplički put 11RS - 14242 Mionica

Director: Ivan FilipovićT: +381 (0)14 616 01F: +381 (0)14 614 01E: [email protected] www.cimos.eu

http://cimos.eu/index.php?page=proizvodni_centri&item=117&pcid=153

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AD Krušik – Precision Casting Mionica. AD Krušik – Precizni liv Most demanding/sophisticated internal and external configurations Unsurpassed flexibility