bci capabilities castings forgings

8/14/2019 BCI Capabilities Castings Forgings

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BCI EngineeringCastings and Forgings

An Overview of Capabilities

Last Updated: February 28, 2010



Castings

BCI Castings and Forgings



Types of Castings

! Gravity Castings(Sand mold, permanent aluminum mold)" The process by which molten metal is poured into a mold,

which contains a hollow cavity of the desired shape, and thenallowed to solidify.

" The solid casting is then ejected or broken out to complete theprocess.

" From very small to very large.

! Die Castings" The process of forcing molten metal under high pressure into

mold cavities (which are machined into dies).

" Small to medium in size; capable of high detail.

!Investment Castings--(Lost Wax/Loss Foam)" The process of forming wax (or foam) into a shape, covering the

shape with sand and then pouring molten metal into the cavitydisplacing the wax.

" Allows for high detail and dimensional accuracy.

" Generally small and medium size.




Malleable, Grey and Ductile Iron

! We use black and green sand molding, aluminummolding, and lost-wax/lost foam methods

! Size from 0.1 kg to 8000 kg (3.5 oz to 9 tons)

! All ASTM grades available

! For higher quantity orders BCI can directly cast ASTMgrades; for lower quantity orders, conversion toChinese GB or Japanese JIS standards is oftennecessary.)




Steel and Stainless Steel

! We use black and green sand molding; aluminummolding; die casting, lost-wax/lost-foam methods

! Sizes from 0.1 kg to 8000 kg (3.5 oz to 9 tons)

! All ASTM grades and alloys available

! (For higher quantity orders, BCI can directly cast ASTMgrades; for lower quantity orders, conversion toChinese GB or Japanese JIS standards is oftennecessary.)




Bronze, Brass and Copper

! We use sand molding; permanent molding; die casting

! Sizes from 0.1 kg to 500 kg (3.5 oz to 1/2 ton)






Aluminum

! We use sand molding, aluminum molding, and diecasting methods

! Sizes from 0.1 kg to 1000 kg (3.5 oz to 1 ton)






Heat-Treating

! Normalizing" Reduces internal stresses and improves crystalline structure by application of

heat, maintaining temperature for appropriate duration, then slow cooling.

! Water and oil quenching" Rapid cooling from elevated temperature to increase hardness and strength.

Often followed by tempering to restore some ductility (toughness).

! Tempering" Reduces hardness and increases toughness by application of heat, maintaining

for appropriate duration, then controlled cooling.

! Surface Hardening" Increases surface hardness of wear parts by engineered application of heat by

flame (flame hardening) or induction coils (induction hardening).




Testing

! We can provide material certification for all castings:

" Chemical analysis" Mechanical tests, including:

! Tensile strength/elongation! Hardness testing

! We also provide Non Destructive Testing upon request:

" Dye penetration" MPI" UT

" X-ray




Forgings




Forged Materials Used By BCI

! Carbon, Alloy and Stainless Steel" Most ASTM grades and alloys available

" (For higher quantity orders, BCI can directly cast ASTM grades;

for lower quantity orders, conversion to Chinese GB or Japanese

JIS standards is often necessary.)

! Aluminum" Most ASTM grades and alloys available

" (For higher quantity orders, BCI can directly cast

ASTM grades; for lower quantity orders, conversion to

Chinese GB or Japanese JIS standards is often necessary.)




Tuning and Finished Machining

! Can rough machine shafts up to 24 meters (80 ft)" Can finish machine up to 14 meters (45 ft)

! Can rough machine donuts up to 9 meters (30 ft)

" Can finish machine up to 3.7 meters (12 ft) in diameter




Surface Heat-Treating

! Flame hardening" A process whereby a forging is exposed to an open flame and then

quenched (cooled in oil, water or air)

! Induction hardening" The localized surface heating of a forging by an electrically-heated

induction coil




Testing

! We provide material certification for all forgings in:" Chemical analysis

" Mechanical tests, including:! Tensile strength/elongation

! Hardness testing

! We also provide Non-Destructive Testing uponrequest:" Dye penetration

" MPI

" UT

" X-ray




Please Contact Us

Hong Kong

Tim Brantingham, Director, Asia-Pacific

" Phone: (852) 9278-5204

" Fax: (852) 2802-0861

" E-Mail: [email protected]

USA

Jerry Carroll, Director of Sales" Phone: (724)-689-8532

" Fax: (724)-240-1500

" E-mail: [email protected]

bci capabilities castings forgings

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