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Metal Cast Iron Boards by Vacuum Casting test

Metal Cast Iron Boards by Vacuum Casting test

Metal Cast Iron Boards by Vacuum Casting test

Casting Metals: Grey Cast Iron, Ductile Cast Iron

Casting Manufacturing: Vacuum Casting (V Process Casting)

Weight: 15.00 kg

Heat Treatment: Annealing + Quenching & Tempering

Application: Catering Equipments or Foodservice Industry 

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OEM & ODM Grey Iron Board for Catering Equipments from Hengchang Foundry

The grey iron boards use in Catering Equipments, such as Electric grills, Pasta cookesr, Griddle range, Pizza oven etc.

Hengchang is the leading producer of gray, ductile iron in China, melting more than 6000 tons per year, with more than 15 years experience. We produce rectangle grey iron boards,round grey iron boards, electric grill grey iron boards  by vacuum molding (V-process) , which  is a variation of the sand casting process for most ferrous and non-ferrous metals, in which unbonded sand is held in the flask with a vacuum. The pattern is specially vented so that a vacuum can be pulled through it. A heat-softened thin sheet (0.003 to 0.008 in (0.076 to 0.203 mm)) of plastic film is draped over the pattern and a vacuum is drawn (200 to 400 mmHg (27 to 53 kPa)). A special vacuum forming flask is placed over the plastic pattern and is filled with a free-flowing sand. The sand is vibrated to compact the sand and a sprue and pouring cup are formed in the cope. Another sheet of plastic is placed over the top of the sand in the flask and a vacuum is drawn through the special flask; this hardens and strengthens the unbonded sand. The vacuum is then released on the pattern and the cope is removed. The drag is made in the same way (without the sprue and pouring cup). Any cores are set in place and the mold is closed. The molten metal is poured while the cope and drag are still under a vacuum, because the plastic vaporizes but the vacuum keeps the shape of the sand while the metal solidifies. When the metal has solidified, the vacuum is turned off and the sand runs out freely, releasing the casting.

The V-process is known for not requiring a draft because the plastic film has a certain degree of lubricity and it expands slightly when the vacuum is drawn in the flask. The process has high dimensional accuracy, with a tolerance of ±0.010 in for the first inch and ±0.002 in/in thereafter. Cross-sections as small as 0.090 in (2.3 mm) are possible. The surface finish is very good, usually between 150 and 125 rms. Other advantages include no moisture related defects, no cost for binders, excellent sand permeability, and no toxic fumes from burning the binders. Finally, the pattern does not wear out because the sand does not touch it. The main disadvantage is that the process is slower than traditional sand casting so it is only suitable for low to medium production volumes; approximately 10 to 15,000 pieces a year. However, this makes it perfect for prototype work, because the pattern can be easily modified as it is made from plastic.

Grey & ductile iron casting

- weight: 0.5-2000KG

- technology: Green sand, resin sand, vacuum casting, shell molding

- production line: DISA line, auto molding line, manual molding machine

- application: Pump, valve, automobile, agriculture, municipal, sports, metallurgy other mechanical field

 

Vacuum moulding line:

- available material: grey iron, ductile iron and alloy steel

- flask dimension:  1,000 mm × 800 mm × 500 mm

- weight scope: 0.5-100kgs

 

Resin Sand moulding line:

- available material: grey iron, ductile iron and steel

- flask dimension: 4200*4200*2000mm

- weight scope: 10-2000kgs

 

Moulding Autoline:

- available material: grey iron, ductile iron

- flask dimension:

- 508*609*250mm

- 350*450*150mm

- 400*500*180mm

-weight scope:0.2-50kgs

 

 

Product details

Material

Gray iron ,ductile iron, brass, carbon steel, copper, aluminum, alloy steel, etc

standard

ASTM, ASME,DIN, EN, BS, JIS, ANSI, AS,GB etc.

process

Green sand casting ,resin sand casting, shell molding casting,vacuum casting, continuous concast, machining

Weight range

0.5-2,000kg

Surface treatment

painting, polishing, heat treatment, annealing or galvanization etc.

Size and design

As per the customer's drawings, samples and requirements

Machining

complete machining such as CN machining,CNC lathe,CNC milling,drilling etc.

Packing

As per customers' requirements

Inspection

in-house or the third Party

 

Our Advantages in Sand Casting Field:

• Over 15 years of experience in sand casting, shell molding casting and machining technology.
• Dimensionally accurate cores for complex internal contours.
• Strictly control the raw materials.
• Quality management throughout the production process and maximum process reliability.

Available Grade of Gray Iron in our Foundry:  FC150, FC200, FC250, HT150, HT200, HT250; EN-GJL-150, EN-GJL-200, EN-GJL-250, GJL-250

Hengchang are producing various grey iron casting products for overseas customers in Japan, USA, Canada, Germany, Danmark, Russia and Dubai.

 

OEM Vacuum Casting Samples

 Catering Equipment Boards

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