Unlock instant, AI-driven research and patent intelligence for your innovation.
Method of Lattice Material Reinforced Bonding Interface of Alfe Composite Castings
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A material structure and lattice technology, applied in the field of bonding interface strengthening, can solve problems such as insufficient bonding strength of AlFe, and achieve the effects of high density, enhanced metallurgical bonding and mechanical bonding, and high specific strength.
Inactive Publication Date: 2020-04-24
CHONGQING UNIV
View PDF3 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0006] Aiming at the defect of insufficient AlFe bonding strength existing in the prior art, the present invention provides a method for reinforcing the bonding interface of AlFe composite castings with a lattice material, which uses selective laser melting technology to prepare Fe-based lattice materials on the bonding surface of iron-based materials , and then use the liquid-solid composite casting process to realize the combination of iron-based materials and aluminum alloys
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0024] The lattice material is 304 stainless steel, the type is pyramid, the rod length is 1.5mm, the rod diameter is 0.4mm, and the angle between the rods is 45°. Selected area laser melting molding process parameters: laser power 120W, scanning speed 470mm / s, spot diameter 60μm, powder layer thickness 0.025mm, scanning distance 80μm, using progressive scanning method to prepare Fe-based lattice materials.
[0025] The surface treatment of Fe-based lattice materials is as follows: use 65g / L NaOH, 22g / L NaOH 3 PO 4 , 23g / L Na 2 CO 3 , 5g / LNa 2 SiO 3 , surfactant 4mL / L, the rest is water, chemical degreasing; use 110g / L NaOH, 60g / L KMnO 4 , 90g / LNa 2 CO 3 , the rest is water, pickling at 85°C, and then passivation treatment with a nitric acid aqueous solution with a volume ratio of 25% at a temperature of 25°C for 36 minutes. Submerge the Fe-based lattice material in the galvanizing solution for 30s while stirring.
[0026] Composite casting process parameters: aluminu...
Embodiment 2
[0028] The lattice material is 314 stainless steel, the type is tetrahedron, the length of the rod is 2mm, the diameter of the rod is 0.6mm, and the angle between the rods is 45°. Selected area laser melting molding process parameters Laser power 150W, scanning speed 500mm / s, spot diameter 70μm, powder layer thickness 0.03mm, scanning distance 90μm, Fe-based lattice material was prepared by line-by-line scanning.
[0029] The surface treatment of Fe-based lattice materials is as follows: use 70g / L NaOH, 24g / L NaOH 3 PO 4 , 25g / L Na 2 CO 3 , 7g / LNa 2 SiO 3 , surfactant 6mL / L, the rest is water, chemical degreasing; using 125g / L NaOH, 70g / L KMnO 4 , 95g / LNa 2 CO 3 , the rest is water, pickling at 86°C, and then passivation treatment with a nitric acid aqueous solution with a volume ratio of 30% of nitric acid at a solution temperature of 50°C for 45 minutes. Submerge the Fe-based lattice material in the galvanizing solution for 40s while stirring.
[0030] Composite cas...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Property
Measurement
Unit
length
aaaaa
aaaaa
diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention discloses a method for enhancing an Al-Fe compound casting bonding interface by means of lattice materials. The method comprises the following steps that (1) Fe-based lattice materials are prepared on the bonding surface of Fe-based materials by adopting a selective laser melting technology; (2) the surface of the lattice materials is treated by adopting an alkaline degreasing-acid pickling passivating-hot-dip galvanizing technology; and (3) the Fe-based materials are fixed in a casting mould, aluminum alloy is poured into the casting mould, and ultrasonic oscillation is performed in the casting process, so that Al-Fe firm bonding is achieved. Different from a bonding mode between traditional planes, the method is high in bonding strength, falling is not prone to occurring, Al-Fe firm bonding is achieved, in addition, no complex equipment is needed, and parameters are easy to control.
Description
technical field [0001] The invention relates to a joint interface strengthening technology, in particular to a method for strengthening the joint interface of an AlFe composite casting with a lattice material. Background technique [0002] As an extremely abundant metal in the earth's crust, aluminum is widely used in aerospace, transportation, and construction machinery due to its low density, good corrosion resistance, and formability. Second only to iron and steel, it plays a particularly important role in the development of the national economy. Steel is the most widely used metal material in today's industry, and iron-based materials are the most widely used structural materials in today's industry, with excellent strength, wear resistance and low cost. [0003] The properties of aluminum alloy and iron-based materials are very complementary. In some environments, the composite structure of the two can overcome the shortcomings of a single material while retaining thei...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More