Cast Steel Shot 1.7mm-Shot Blasting machine, shot peening machine,sand blast cabinet---MIZHI

Outstanding Advantages

Adopt medium frequency furnace for smelting to ensure high quality molten steel;
Using refining furnace to refine molten steel;
High speed centrifugal casting;
To separate hollow and defective particles effectively, to improve the density of steel shot;
Adopt secondary quenching treatment;
Using temper treatment,to refine the internal organization;
Using fine screening,to comply with American SAE-J444 standard;

Contrast Of Products

VS

Before shot blasting

After shot blasting

Technological Process

Smelting:Using Electric arc furance smelting,steel components can be adjusted to reduce the content of harmful elemental such as sulfur,phosphorus .

Refining:Using refining furnace to refine molten steel,improving the purity of molten steel,then the steel shot can get better material.

Granulation:High speed centrifugal casting forming,effective control the forming quality and reduce physical defects.

Selection:To separate hollow and defective particles effectively, to improve the density of steel shot.

Quenching:Using secondary quenching to refine grains and make the product more compact internal microstructure to enhance the toughness.

Tempering:To refine the internal organization further to reach the requirement of different hardness,to make it's uniformity of the organization and hardness best by precise temperature and time control.

Broken:Unique crushing prcess make the steel grit has better fullness and angularity,to reduce the internal cracks of the steel grit grain as well.

Fine Sieve:To control particle size Precesion,make the products meet the American SAE-J444 standard.

Quality Control

1Hardness Tester

1. No friction spindle,High testing accuracy.

2. Stable construction,High testing efficiency.

3. High precision micrometer readings metering system.

4. Testing process automation,no human operator error.

5. Accuracy class:GB/T4340.2/ISO6507-2 and American ASTME92.

2Microscope

1. To identificate and analyze the organizational structure of various metals and alloys.

2. The instrument is widely used in factories or laboratories to identify the quality of castings,inspect raw materials,or Microstructure analysis after-treatment.

3Three Element Analyzer

1. A newer multi-element analyzer.

2. It is used in detection of variety of elements such as :Si/Mn/P/Cr/Ni/Mo/Cu/Ti of all kinds of material such as:ball mill cast iron,cast iron,ductile iron,alloy cast iron and stainless steel ,carbon steel,low alloy steel,high alloy steel etc. The analysis result is fast and accurate.

4Carbon & Sulfur Analyzer

1. The equipment is one of the high-tech products and a collection of optical ,mechanical and electrical ,computer,analysis technology.

2. It has the advantage of wide measuring range,strong anti-jamming capability,complete functions,simple operation,analysis results accurate and reliable,ti is the ideal analysis equipment of the 2 element of carbon and sulfur in industries determination.

Parameter Introduction

Steel Shot Technology Data
Item	Name	Steel Shot
Chemical Composition	C	0.85-1.20
Chemical Composition	Si	0.40-1.20
Chemical Composition	Mn	0.60-1.20（S170:0.50-1.20; S110/S70:0.35-1.20
Chemical Composition	S	≤0.05
Chemical Composition	P	≤0.05
Hardness		HRC40-50
Microstructure		Homogeneous tempered martensite or troostite
Density		≥7.20g/cm³
External Form		Round hollow particles＜10%
Model		S50,S70,S110,S130,S170,S230,S280,S330,S390,S460,S550,S660,S780,S930

Steel Shot Size Distribution

SAE J444 Steel Shot

Screen No.

Inch

S930

S780

S660

S550

S460

S390

S330

S280

S230

S170

S110

S70

All Pass

6

0.1320

All Pass

6

0.1110

≥90%

All Pass

8

0.0937

≥97%

≥85%

All Pass

10

0.0787

≥97%

≥85%

All Pass

12

0.0661

≥97%

≥85%

All Pass

14

0.0555

≥97%

≥85%

All Pass

16

0.0469

≥96%

≥85%

All Pass

18

0.0394

≥96%

≥85%

All Pass

20

0.0331

≥96%

≥85%

≤10%

25

0.0280

≥96%

≥85%

All Pass

30

0.0232

≥97%

≤10%

25

0.0197

≥85%

All Pass

40

0.0165

≥97%

≤10%

45

0.0138

≥85%

50

0.0117

≥90%

≥85%

80

0.0700

≥90%

120

0.0049

200

0.0029

Industry Application

Shot blasting and derusting production line for Marine engineering machinery parts

Marine Transportation Industry

Shot blasting cleaning line solution for parts of bullet train brake system

MIZHI

Steel Shot Technology Data

Steel Shot Size Distribution