Waste material regenerative lead-free bronze alloy and preparation method thereof
A technology of lead-free bronze and waste materials, which is applied in the field of regenerated lead-free bronze alloys from waste materials and its preparation, which can solve the problems of high price and poor corrosion resistance after immersion, and achieve the improvement of corrosion resistance fatigue strength and cavitation corrosion resistance. , The effect of improving the fluidity of the alloy liquid
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0042] The present invention also provides a method for preparing lead-free bronze alloy regenerated from waste materials described in the above technical solution, comprising the following steps:
[0043] (1) first smelting lead-free copper alloy waste and retort charcoal to obtain molten materials;
[0044] (2) refining after mixing the molten material obtained in the step (1) with a refining agent to obtain a refined material;
[0045] (3) The refined material obtained in the step (2), the boron source, the titanium source, the zirconium source and the mixed rare earth are mixed and then subjected to a second smelting to obtain a lead-free bronze alloy regenerated from waste materials.
[0046] In the invention, lead-free copper alloy waste materials and retort charcoal are first smelted to obtain molten materials. In the present invention, the lead-free copper alloy waste material contains tin element, zinc element, bismuth element, selenium element and nickel element. T...
Embodiment 1
[0061] A lead-free bronze alloy regenerated from waste and old materials, comprising the following elements by mass percentage:
[0062] Tin 2.1%, Zinc 4.1%, Bismuth 0.5%, Selenium 0.15%, Nickel 1.2%, Boron 0.01%, Titanium 0.01%, Zirconium 0.01%, Misch 0.01%, Lead 0.03%, Iron 0.25%, Phosphorus 0.04%, Silicon 0.0015%, aluminum 0.0015%, the balance of copper;
[0063] The mixed rare earths include the following components in mass percentage: lanthanum 40%, cerium 50%, praseodymium 9%, neodymium 1.0%.
[0064] A method for preparing lead-free bronze alloy regenerated from waste and old materials, comprising the following steps:
[0065] Cover dry distillation charcoal 2cm higher than the surface of lead-free copper alloy waste, and first melt at 1200°C to obtain molten material. After mixing the molten material and refining agent, refine at 1100°C for 24 hours to obtain refined material. The mass of refining agent It is 0.15% of the molten material, and the refining agent inclu...
Embodiment 2
[0068] A lead-free bronze alloy regenerated from waste and old materials, comprising the following elements by mass percentage:
[0069] Tin 2.7%, Zinc 5.1%, Bismuth 1.0%, Selenium 0.1%, Nickel 0.6%, Boron 0.05%, Titanium 0.04%, Zirconium 0.05%, Misch 0.015%, Lead 0.02%, Iron 0.2%, Phosphorus 0.03%, Silicon 0.0013%, aluminum 0.0014%, the balance of copper;
[0070]The mixed rare earths include the following components in mass percentage: lanthanum 40%, cerium 55%, praseodymium 4%, neodymium 1.0%.
[0071] Cover dry distillation charcoal 3cm higher than the surface of lead-free copper alloy scrap, and first melt at 1250°C to obtain molten material. After mixing the molten material and refining agent, refine at 1150°C for 12 hours to obtain refined material. The mass of refining agent It is 0.4% of the molten material, and the refining agent includes components in mass percentage: 40% fluorite, 30% sodium carbonate, 15% cryolite, 15% calcium carbonate, copper-boron master alloy...
PUM
| Property | Measurement | Unit |
|---|---|---|
| recrystallization temperature | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More