High Manganese Steel Sand Casting

High manganese steel sand casting mostly adopts sand moulding process plan. Sand mould casting is widely implemented due to its mature technology and high production efficiency. There are also special castings. Special casting refers to casting methods that are significantly different from sand casting in terms of mold materials, molding methods, molten metal filling methods, and metal solidification conditions in the mold.

Zhongwei Precision Machinery Co., Ltd. has more than 10 years of experience in the production of high manganese steel.

Product Description

1. Implementation standards: The company strictly implements ISO9001 & TS 16949 certification.

2. Product material standards: ISO, GB, ASTM, SAE, ISO, EN, DIN, JIS, BS

3. Main processes: sand casting, silica sol investment casting, water glass investment casting,

shell casting,deburring, sand blasting, machining, heat treatment, leak testing, surface treatment, etc.

4. Available materials:

Gray iron, ductile iron, cast iron, cast steel, cast aluminum, cast copper, alloy steel, etc. are customized according to customer requirements.

Effects of Various Elements on High Manganese Steel Sand Castings

I believe many people have heard of high manganese steel, but they still don’t know it very well. High manganese steel refers to alloy steel with a manganese content of more than 10%. After solution treatment, high manganese steel still retains a small amount of Carbide has not been dissolved, but its quantity is relatively small, and it can still be used when it meets the inspection standards. So for steel casting manufacturers, what effects do the various elements in high manganese steel have on castings?

1. The influence of non-metallic inclusions on the performance of High manganese steel sand casting;

When the molten steel solidifies, a large amount of manganese oxide will precipitate on the perimeter of the steel in the form of non-metallic inclusions, which will reduce the impact toughness of the steel and increase the hot cracking tendency of the casting.

2. The effect of carbide on the properties of high manganese steel:

Carbides reduce the impact toughness and tensile strength of high manganese steels.

3. What effect will the selection of chemical composition have on the properties of high manganese steel?

(1) Carbon content: If the carbon content in the high manganese steel is very low, the effective work hardening effect will not be produced. On the contrary, if the carbon content is too high, a large amount of carbon will appear in the as-cast state. Carbides, especially coarse carbides will appear, so in order to avoid the precipitation of carbides, steel casting manufacturers must control the carbon content.

(2) Manganese content: steel casting manufacturers must ensure that there is sufficient manganese content in the steel, which is also to ensure the performance of high-manganese steel. If the manganese content is too low, then a single Austrian On the contrary, the manganese content should not be too high. It is stipulated in the production that the general WMn will be controlled at about 11.0%-14.0%, and the WC will be controlled at about 0.9%-1.3%. It should be pointed out that there should be an appropriate match between the carbon content and the manganese content, that is, there should be a suitable ratio of manganese to carbon, and it is recommended to control it at Mn/C=10.

(3) Sulfur content: Generally, the specification requirements of high manganese steel are that Ws is greater than or equal to 0.05%. Because the manganese content in high manganese steel is high, most of the sulfur and manganese in the steel are in the process of smelting. , fused with each other to form manganese sulfide into the slag, so the sulfur content in the steel is very low, and the harmful effect of sulfur in high manganese steel is much higher than that of phosphorus.

(4) Silicon content: The Wsi content in high manganese steel is generally between 0.3% and 0.8%. The presence of silicon will reduce the solubility of carbon in austenite, promote the precipitation of carbides, and lead to the resistance of steel. The abrasiveness and impact toughness are reduced, so the silicon content in the high-manganese steel, the steel casting manufacturer should also control the lower limit of the specification.

(5) Phosphorus content: the specification content in high manganese steel is greater than or equal to 0.7% in Wp. When steel casting manufacturers are melting high manganese steel, because the phosphorus content of ferromanganese is relatively high, the general situation The phosphorus content in the lower steel is also relatively high. The phosphorus element will reduce the impact toughness of the steel, and will also cause defects such as cracking in the casting. Therefore, the phosphorus content in the steel should also be minimized.

Post Casting Process

1. Heat treatment: annealing, carbonization, tempering, quenching, normalizing, surface tempering

2. Sand casting auto parts processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

3. Surface treatment: powder spraying, chrome plating, painting, sandblasting, nickel plating, galvanizing, blackening, polishing, bluing, etc.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Available Materials List:

Grey iron and ductile iron

Other materials: cast iron, cast steel, cast aluminum, cast copper, alloy steel, etc. can be customized according to customer requirements.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements.

3. Testing equipment: flaw detection, spectrum analyzer, golden image analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine;

4. Provide after-sales service.

5. The quality can be traced back.

Scope of Application

1. Engine parts

2. Auto parts

3. Mechanical parts

4. Railway train parts

5. Truck parts

6. Tractor accessories

7. Construction equipment

8. Agricultural equipment

9. Machine tool equipment

10. Other industrial fields