A kind of high strength and toughness mining chain steel and its manufacturing method
A manufacturing method and technology of chain steel, applied in the direction of manufacturing tools, metal chains, furnaces, etc., can solve problems such as brittle fracture, economic loss, safety accidents, etc., and achieve the effect of reasonable composition and process design and loose process window
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0074] According to the chemical composition shown in Table 1, the electric furnace smelts, after refining and vacuum treatment, it is cast into a continuous casting billet, and the continuous casting billet is heated to 1050 ° C for a holding time of 4 hours; The rolling temperature is 800°C, and the size of the intermediate billet is 200×200mm. The intermediate billet is heated to 1050 ℃, the holding time is 24 hours, and the rolling is started after the high-pressure water descaling, the final rolling temperature is 850 ℃, and the finished bar specification is φ50mm. Air-cooled after rolling. The quenching heating temperature is 850℃, the heating time is 60min, the tempering temperature is 390℃, the tempering time is 90min, and air cooling after tempering.
Embodiment 2
[0076] The implementation is the same as in Example 1, wherein the heating temperature is 1080°C, the holding time is 3h, the final rolling temperature is 880°C, and the size of the intermediate blank is 220×220 mm. The intermediate billet is heated to 1120°C, the holding time is ≥3h, the final rolling temperature is 850°C, and the finished bar specification is φ75mm. Air-cooled after rolling. The quenching heating temperature is 870°C, the heating time is 100min, the tempering temperature is 550°C, the tempering time is 60min, and water cooling after tempering.
Embodiment 3
[0078] The implementation is the same as in Example 1, wherein the heating temperature is 1120° C., the holding time is 8 hours, the final rolling temperature is 940° C., and the size of the intermediate blank is 260×260 mm. The intermediate billet is heated to 1200°C, the holding time is 5h, the final rolling temperature is 880°C, and the finished bar specification is φ100mm. Air-cooled after rolling. The quenching heating temperature is 890°C, the heating time is 150min, the tempering temperature is 430°C, the tempering time is 100min, and air-cooled after tempering.
PUM
| Property | Measurement | Unit |
|---|---|---|
| yield strength | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
| yield strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More