Semi-Continues Casting Billet and Slab Magnesium Alloy Fine Inner Grain Size High Strength Used for Structural Component

Product Detail

Semi-continues Casting Billet And Slab For Extruding / Hot Rolling / Forging AZ31B AZ61 ZK60 AM80 AM60 WE43 Used In The Aerospace Automotive And Defense Industry

Semi-continues casting billet and Slab

Or Called Direct chill cast Magnesium billet

Main application:

After buyer get it ,can use the billet to extruded out all kinds of products ,or forging into all kinds of parts ,or rolling into all kinds of parts ,or CNC into special parts . It is previous step material of next processing step, like extrusion, forge, rolling and CNC

Description of Semi-continues casting for magnesium

It is also called the vertical direct chill casting (DCC),which is the preferred method that is used universally for casting of large cross-sectional slabs and round billets of various aluminum alloys . This method is also used to cast other non-ferrous alloys, such as magnesium alloys, copper alloys, zinc alloys, etc. The casting process in this method starts by feeding the melt through some form of a melt delivery system into an open-ended water-cooled mold. Initially, the bottom end of the mold is kept-plugged by a starter metallic block which is fitted with a hydraulic ram at the bottom. When molten metal comes in contact with the cooled mold walls and the upper-surface of the bottom block, it solidifies and forms an embryonic shell containing liquid metal within the shell. Once a pre-determined height of liquid metal is filled within the mold cavity, the starter block holding the shell-liquid assembly is slowly moved downward toward the casting pit with the help of the hydraulic ram. The speed of the starter block is then gradually increased until a constant casting speed is reached. Once the cast is out of the mold, it is further cooled by spraying water coming out from the bottom of the mold onto the outer surface of the embryonic ingot. The cooling that takes place in the mold region is called primary cooling where only 10 to 15% of the total heat content of the ingot is removed. The heat extraction from the ingot that takes place below the mold is called secondary cooling where 85% to 90% of the total heat content is extracted. In a typical DCC process, it takes about five to ten minutes to reach a quasi-steady state. Depending on the casting speed (which normally varies between 40 and 100?mm/min for magnesium alloys) and the size of the cast, the total operation of this semi-continuous process usually lasts for about 100 to 120 minutes .









Main mechanical properties

Item	Shape	Status	Tension strength   (Mpa)	Yield Strength (Mpa)	Elongation   (%)
AZ31B	Billet or slab	Cast	205	90	16
AZ40M	Billet or slab	Cast	205	90	16
AZ41M	Billet or slab	Cast	210	90	13
AZ61	Billet or slab	Cast	220	100	15
AZ80	Billet or slab	Cast	220	110	7
ME21	Billet or slab	Cast	200	110	9
ZK61	Billet or slab	Cast	260	140	14
Main usage   : forging and extruding after get it

Main shopsign we supplied

Manual Cast billet is supplied to clients on the compositional and homogenized condition. The Chemical Composition is as per AZ31B, AZ61A, AZ80A ,M1C and ZK61M. Inspection standards for billet will be by agreement. 

Chemical Composition:

 

AZ31B	ASTM B 107/B 107M
Elements	Al	Zn	Mn	Si	Fe	Cu	Ni	Ca	Others,total
Min%	2.50	0.60	0.20
Max%	3.50	1.40	1.00	0.10	0.005	0.05	0.005	0.04	0.3

 

 

ZK60A	ASTM B 107/B 107M
Elements	Zn	Zr	Others,total
Min%	4.8	0.45
Max%	6.2		0.3

  

 

AZ61A	ASTM B 107/B 107M
Elements	Al	Zn	Mn	Si	Fe	Cu	Ni	Others,total
Min%	5.80	0.45	0.15
Max%	7.20	1.50	0.50	0.10	0.005	0.05	0.005	0.3

 

 

AZ80A	ASTM B 107/B 107M
Elements	Al	Zn	Mn	Si	Fe	Cu	Ni	Others,total
Min%	7.80	0.20	0.12
Max%	9.20	0.80	0.50	0.10	0.005	0.05	0.005

 

 

M1C	ASTM B 843
Elements	Al	Si	Mn	Fe	Cu	Ni	Others,each	Others,total
Min%			0.50
Max%	0.01	0.05	1.30	0.03	0.02	0.001	0.05	0.3

 

Specification and size:

Billet diameter range: 60-660mm

Length max 2000mm

For Slab

 Max dimension of cast slab: 340*960*2000mm

 Max thickness: 340mm(after machining)

 Max width:960mm (after machining)

Packing terms:

In wood case or on pallet with plastic film strapped

 

Special required alloy and size combinations may be available on enquiry.