Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of alloy material and hard surface, applied in the direction of welding/cutting medium/material, welding equipment, welding medium, etc., can solve the problems of insufficient economy, high content of precious metal elements, increased cost, etc., to reduce pollution and improve weldability And good impact resistance, hardness and wear resistance
Active Publication Date: 2019-05-31
HEBEI UNIV OF TECH
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
However, the designed alloy powder still uses chromium carbide as the main hard phase.
And the content of adding precious metal elements is more, which increases the cost and is not economical
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
[0044] The mass percentages of the constituent elements of the hardfacing alloy material in this embodiment are: Nb: 1.0Wt%, Ni: 1.0Wt%, C: 0.5Wt%, Si: 0.5Wt%, Mn: 1.5Wt%, Cr: 3.0Wt %, Mo: 2.0Wt%, W+V+Ti: 2.5Wt% (W: 1.0Wt%, V: 1.0Wt%, Ti: 0.5Wt%), and the balance is Fe.
[0045] The raw material composition (by mass percentage) used in the alloy material of this embodiment is: 0.8% of medium carbon ferromanganese, 4.4% of high carbon ferrochrome, 0.4% of ferrosilicon, 3.2% of ferromolybdenum, 1.0% of vanadium iron, 2.0% of tungsten iron , ferro-titanium 0.2%, high-carbon ferromanganese 1.0%, reduced iron powder 85%, niobium powder 1.0%, nickel powder 1.0%. Among them, the purity of nickel powder and niobium powder is ≥0.99, and other raw materials are used according to market standards.
[0046] Use the alloy material of this example to carry out surface overlay welding on the base material 42CrMo steel (see the following table 1 for the chemical composition) by TIG cladding,...
Embodiment 2-6
[0053] The elemental composition and welding method of the alloy materials in Examples 2-6 are the same as those in Example 1, except that the contents of nickel and niobium elements are changed.
Embodiment 7
[0078] The mass percent composition of each element of the hardfacing alloy material in this embodiment is: Nb: 2.0Wt%, Ni: 1.5Wt%, C: 0.4Wt%, Si: 0.3Wt%, Mn: 1.2Wt%, Cr: 3.5Wt%, Mo: 1.8Wt%, W+V+Ti: 2.2Wt%, the balance is Fe.
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
purity
aaaaa
aaaaa
friction coefficient
aaaaa
aaaaa
friction coefficient
aaaaa
aaaaa
Login to view more
Abstract
The invention relates to a hardfacing alloy material. The hardfacing alloy material is characterized by comprising the following component elements in percentage by mass: 1.0-2.5Wt% of Nb, 0-2.0Wt% of Ni, 0.3-0.5Wt% of C, 0.2-0.5Wt% of Si, 1.0-1.5Wt% of Mn, 3.0-4.0Wt% of Cr, 1.5-2.0Wt% of Mo, 2.0-2.5Wt% of W+V+Ti, and the balance of Fe. An appropriate amount of Ni and Nb are added in the hardfacing alloy material, a finer MC type carbide can be obtained as a hard surface layer of a main hard phase when the hardfacing alloy material is used in welding, the generation amount of relatively thick and big M23C6 is effectively reduced at the same time, a martensitic matrix with strong toughness is used as a support for the hard phase MC carbide, and a hard surface layer composed of the strong-toughness martensitic matrix and the dispersively-distributed fine MC type carbide as the main hard phase is finally obtained. On the premise of improving the hardness of the hard surface layer, good crack resistance and wear resistance of the hardfacing alloy material are ensured, and strong-toughness matching of the hard surface layer is effectively improved.
Description
technical field [0001] The invention relates to a hard surface surfacing alloy material. When the surfacing alloy material is used for welding, a hard surface layer with MC type carbide as the main hard phase can be formed. It is used for surfacing welding to manufacture a hard surface layer so that the surface of the substrate can obtain high hardness, high wear resistance and excellent corrosion resistance. With excellent performance and high temperature resistance, the surfacing alloy material can be used in the surface repair of workpieces and the development of solid core and flux cored wires. Background technique [0002] Judging from the current research status of high-hardness surfacing materials at home and abroad, high-hardness and wear-resistant alloys are mostly high-chromium cast iron alloys, because the hard surface layer contains a large amount of eutectic carbide M 7 C 3 , M 23 C 6 Thus, high hardness can be obtained. However, its toughness is very poor ...
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