A preparation method of laser cladding wear-resistant plate based on synchronous progressive shear deformation
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 technology of shear deformation and laser cladding, which is applied in the direction of coating, metal material coating process, etc., to achieve the effect of high dislocation density, excellent comprehensive mechanical properties, and uniform structure
Active Publication Date: 2020-06-26
江阴富朗特机械有限公司
View PDF2 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
[0003] In order to overcome the shortcomings and deficiencies of the above-mentioned prior art, the object of the present invention is to provide a method for preparing a laser cladding wear-resistant plate based on synchronous progressive shear deformation, so as to make the microstructure of the prepared laser cladding layer finer , more uniform, while eliminating the internal defects of the cladding layer and enhancing the bonding strength with the substrate, so it has more excellent comprehensive mechanical properties
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
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0021] A laser cladding wear-resistant plate preparation method based on synchronous progressive shear deformation, comprising:
[0022] (1) Sandblasting the surface of the substrate to obtain a certain degree of cleanliness and roughness.
[0023] (2) According to figure 1 , the substrate was fixed on the device, and the thickness of the substrate was 4 mm.
[0024] (3) Under the protection of argon gas, laser cladding is carried out on the substrate, using synchronous powder feeding method, the cladding material is Ni60, the laser power is 3000W, the spot diameter is 4mm, the overlap rate is 30%, and the scanning speed is 10mm / s.
[0025] (4) Synchronously with the laser cladding, a ball head cutter with a radius of 4mm follows the molten pool to carry out gradual shear deformation on the cladding plate to make it fit the supporting slope, such as figure 2 and image 3 shown. The ball head cutter and the laser head are fixed on the same reference object. When the ball h...
Embodiment 2
[0029] Other operations of this embodiment are the same as those in Embodiment 1, except that the cladding material is NiCrBSi self-fluxing alloy powder, and its chemical composition is (wt%): 17.0Cr, 3.5B, 4.0Si, 1.0C, <12Fe, The rest is Ni.
[0030] The laser cladding plate obtained in this example was tested, and the average microhardness of the cladding layer section reached 946HV, compared with the cladding layer (787HV) prepared under the same conditions and parameters without synchronous progressive shear deformation. An increase of 20.2%. In the friction and wear test, there is no peeling phenomenon of cladding layer.
Embodiment 3
[0032] The other operations of this embodiment are the same as in Embodiment 1, the difference is that the cladding material is CoCrW cobalt-based alloy powder, and its chemical composition is (wt%): 29.9Cr, 4.5W, 0.99C, 3.0Ni, 1.4Si, and For Co.
[0033] The laser cladding plate obtained in this example was tested, and the average microhardness of the cladding layer section reached 1178HV, compared with the cladding layer (974HV) prepared under the same conditions and parameters without synchronous progressive shear deformation. An increase of 20.9%. In the friction and wear test, there is no peeling phenomenon of cladding layer.
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
hardness
aaaaa
aaaaa
hardness
aaaaa
aaaaa
hardness
aaaaa
aaaaa
Login to view more
Abstract
The invention belongs to the field of laser cladding remanufacturing, and particularly relates to a laser cladding abrasion-resistant plate preparation method based on synchronous progressive shear deformation. The method comprises the procedures of surface abrasive blasting, laser cladding, progressive shear deformation and heat treatment, wherein the progressive shear deformation process comprises the steps that to the two ends of a cladding substrate are fixed correspondingly, and one of the ends can move freely in the vertical direction; a ball end cutter moves gradually along a predetermined path, the cladding plate is forced to conduct progressive shear deformation and to attach to a supporting slope; by adjusting the angle of the supporting slope, the degree of shear deformation ofthe cladding plate can be controlled; and the progressive shear deformation process and the laser cladding process are conducted synchronously, and the ball end cutter conducts shear deformation treatment on a recently solidified alloy layer immediately along with a molten pool. According to the laser cladding abrasion-resistant plate prepared through the method, columnar crystals and dendrites which are grown in an oriented mode are broken, fine isometric crystal are fomred, the structure is uniformized, the dislocation density is high, the compactness is good, and the strength and abrasion resistance are high. Meanwhile, the strength of the substrate is improved through shear deformation, the defects of an interface between the laser cladding layer and the substrate are overcome, the bonding strength is improved, and compared with laser cladding wear plates prepared through traditional methods, the laser cladding abrasion-resistant plate has more excellent comprehensive mechanical properties.
Description
technical field [0001] The invention belongs to the field of laser cladding remanufacturing, and in particular relates to a preparation method of a laser cladding wear-resistant plate based on synchronous progressive shear deformation. Background technique [0002] Laser cladding technology uses a high-energy laser beam as a heat source to melt the coating material with excellent wear resistance, corrosion resistance and heat resistance that is preset or synchronously supplied on the surface of the substrate, and forms a good metallurgical bond with the substrate. In order to obtain the surface modification technology for special requirements. This technology has the advantages of low dilution rate, small heat-affected zone, small distortion and deformation of cladding parts, and easy automation of the process. In the laser cladding process, the interaction between the laser, the powder material and the matrix to form the cladding layer is a complex melting-solidification m...
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