Cast Iron 63mm Heavy Duty Swivel Wheels / Lockable Swivel Casters

               Casting process flow of cast iron castors
Make mold, core box - sand molding - melting - pouring - sand falling - de pouring riser cleaning -

Inspection and warehousing. If there are defects after pouring, 1) the defective products must be

separated, and relevant departments shall be informed to analyze the causes of defects and

correct them in the next production

2) Analyze whether the defect can be repaired, such as repair welding. Not all products need

heat treatment. It mainly depends on your product materials and the use of the product. Heat

treatment is nothing more than to eliminate internal stress or improve or reduce the hardness

of products for processing. Some guests have special requirements, which should be analyzed

according to the specific situation.

Technological process of casting production
Casting production is a complex multi process combination process, which includes the following

main processes:

1) Prepare the production process, formulate the production process plan and process documents

and draw the casting process diagram according to the part drawing to be produced, production

batch and delivery time;

2) Production preparation, including preparation of melting materials, molding and core making

materials and patterns, core boxes, sand boxes and other process equipment;

3) Molding and core making;

4) Melting and pouring;
Forming principle casting production is to heat and melt the metal to make it flow, then pour it into

the mold cavity with a certain shape, and fill the mold cavity under the action of gravity or external

force (pressure, centrifugal force, electromagnetic force, etc.), A metal forming method that cools

and solidifies into caster castings (or parts). 1 in the casting forming process, caster castings are

generally cut into parts as blanks. However, many castor castings can meet the design accuracy and

surface roughness requirements of parts without machining, and can be directly used as parts.

Performance and composition of molding sand 1. Performance of molding sand the main performance

requirements of molding sand (including core sand) include strength, air permeability, fire resistance,

yield, fluidity, compactness and collapsibility. 2. Composition of molding sand molding sand is

composed of raw sand, adhesive and additives. Raw sand for casting requires sea sand, river sand

or mountain sand with less mud content, uniform particles and circular and polygonal shape.

Adhesives for casting include clay (ordinary clay and bentonite), sodium silicate sand, resin,

synthetic oil and vegetable oil, which are called clay sand, sodium silicate sand, resin sand, synthetic

oil sand and vegetable oil sand respectively. In order to further improve some properties of mold

(core) sand, some additives, such as coal, sawdust, pulp and so on, are often added to mold (core)

sand. Molding sand structure, br > 2 molding sand structure process characteristics casting is one of

the main methods to produce parts blank, especially for parts blank of some brittle metal or alloy

materials (such as various iron castings, non-ferrous alloy castor castings, etc.), casting is almost the

only processing method. Compared with other processing methods, the casting process has the

following characteristics: 1) castor castings can not be limited by metal materials, size and weight.

Castor casting materials can be various cast iron, cast steel, aluminum alloy, copper alloy, magnesium

alloy, titanium alloy, zinc alloy and various special alloy materials; Caster castings can be as small as a

few grams and as large as hundreds of tons; The wall thickness of castors can be from 0.5mm to 1m;

Caster casting length can range from a few millimeters to more than ten meters. 2) Casting can

produce all kinds of blanks with complex shapes, especially suitable for producing parts with complex

cavities, such as all kinds of boxes, cylinders, blades, impellers, etc. 3) The shape and size of castor

castings can be very close to the parts, which not only saves metal materials, but also saves cutting

hours. 4) Castor castings generally use a wide range of raw materials and low cost. 5) With flexible

casting process and high productivity, it can be produced manually or mechanically.

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