Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The laser repairing method for the bearing position of the precise gear shaft of the blast furnace supercharger for eliminating the axial stress comprises the following steps of:
(1) according to the abrasion condition, the surface of the bearing position of the precision gear shaft is ground by 1.0mm on one side, and a fatigue abrasion layer is removed;
(2) cleaning the ground surface with absolute ethyl alcohol;
(3) preparing alloy powder, which is characterized by comprising the following components in percentage by weight: mo: 2.3%, Si: 1.26%, Cr: 15%, C: 0.02%, Ni: 2.5 percent of Fe, and the balance of Fe, wherein each component of the alloy powder is powder with the purity of more than 99.9 percent and the granularity of 135-325 meshes;
(4) the precise gear shaft is mounted and clamped on a numerical control laser processing machine tool, alloy powder conveyed in place is scanned by a fiber laser through gravity, laser cladding is carried out on the precise gear shaft, and the laser cladding technological parameters are as follows: the size of a rectangular wide light spot is 2 multiplied by 14mm, and the laser power is as follows: 3.0kW, the scan speed is: 450 mm/min, and the thickness of the cladding layer is 1.5 mm;
(5) during cladding, selecting a melting point at one end of the bearing position of the precision gear shaft, starting laser cladding of a first ring, continuously finishing 1/12 times of overlapping cladding with the first ring according to program setting after cladding for a circle, then starting to walk a spiral line, setting the step length to be 10mm, and finishing when the outer side of a melting channel is aligned with the end part of the other end of the bearing position; then, carrying out reverse cladding, selecting a melting point at the other end of the bearing position of the precision gear shaft, starting laser cladding of a first circular ring, continuously finishing 1/12 times of overlapping cladding with a first circular ring channel according to program setting after cladding for one circle, then starting to walk a spiral line, setting the step length to be 10mm, filling the blank between the first spiral line by the channel, and finishing when the outer side of the channel is aligned with the inner side edge of the existing channel at the other end of the bearing position;
(6) grinding the bearing position of the precision gear shaft according to a drawing, wherein the single-side grinding amount is 0.5 mm;
(7) carrying out ultrasonic and surface dye inspection on the precision gear shaft, and detecting whether internal and surface defects exist;
(8) and (4) coating rust-proof oil on the precision gear shaft which is qualified by inspection, and packaging for later use.
Example two
The laser repairing method for the bearing position of the precise gear shaft of the blast furnace supercharger for eliminating the axial stress comprises the following steps of:
(1) according to the abrasion condition, the surface of the bearing position of the precision gear shaft is ground by 0.5mm on one side, and a fatigue abrasion layer is removed;
(2) cleaning the ground surface with absolute ethyl alcohol;
(3) preparing alloy powder, which is characterized by comprising the following components in percentage by weight: mo: 2.8%, Si: 1.35%, Cr: 17%, C: 0.03%, Ni: 3.5 percent of Fe, and the balance of Fe, wherein each component of the alloy powder is powder with the purity of more than 99.9 percent and the granularity of 135-325 meshes;
(4) the precise gear shaft is mounted and clamped on a numerical control laser processing machine tool, alloy powder conveyed in place is scanned by a fiber laser through gravity, laser cladding is carried out on the bearing position of the precise gear shaft, and the laser cladding technological parameters are as follows: the size of a rectangular wide light spot is 2 multiplied by 14mm, and the laser power is as follows: 3.3 kW, the scanning speed is: 600 mm/min, and the thickness of the cladding layer is 1.5 mm;
(5) during cladding, selecting a melting point at one end of the bearing position of the precision gear shaft, starting laser cladding of a first ring, continuously finishing 1/12 times of overlapping cladding with the first ring according to program setting after cladding for a circle, then starting to walk a spiral line, setting the step length to be 10mm, and finishing when the outer side of a melting channel is aligned with the end part of the other end of the bearing position; then, carrying out reverse cladding, selecting a melting point at the other end of the bearing position of the precision gear shaft, starting laser cladding of a first circular ring, continuously finishing 1/12 times of overlapping cladding with a first circular ring channel according to program setting after cladding for one circle, then starting to walk a spiral line, setting the step length to be 10mm, filling the blank between the first spiral line by the channel, and finishing when the outer side of the channel is aligned with the inner side edge of the existing channel at the other end of the bearing position;
(6) grinding the bearing position of the precision gear shaft according to a drawing, wherein the single-side grinding amount is 1.0 mm;
(7) carrying out ultrasonic and surface dye inspection on the precision gear shaft, and detecting whether internal and surface defects exist;
(8) and (4) coating rust-proof oil on the precision gear shaft which is qualified by inspection, and packaging for later use.
EXAMPLE III
The laser repairing method for the bearing position of the precise gear shaft of the blast furnace supercharger for eliminating the axial stress comprises the following steps of:
(1) according to the abrasion condition, the surface of the bearing position of the precision gear shaft is ground by 1.0mm on one side, and a fatigue abrasion layer is removed;
(2) cleaning the ground surface with absolute ethyl alcohol;
(3) preparing alloy powder, which is characterized by comprising the following components in percentage by weight: mo: 2.4%, Si: 1.30%, Cr: 15%, C: 0.02%, Ni: 2.5 percent of Fe, and the balance of Fe, wherein each component of the alloy powder is powder with the purity of more than 99.9 percent and the granularity of 135-325 meshes;
(4) the precise gear shaft is mounted and clamped on a numerical control laser processing machine tool, alloy powder conveyed in place is scanned by a fiber laser through gravity, laser cladding is carried out on the bearing position of the precise gear shaft, and the laser cladding technological parameters are as follows: the size of a rectangular wide light spot is 2 multiplied by 14mm, and the laser power is as follows: 3.0kW, the scan speed is: 450 mm/min, and the thickness of the cladding layer is 1.5 mm;
(5) during cladding, selecting a melting point at one end of the bearing position of the precision gear shaft, starting laser cladding of a first ring, continuously finishing 1/12 times of overlapping cladding with the first ring according to program setting after cladding for a circle, then starting to walk a spiral line, setting the step length to be 10mm, and finishing when the outer side of a melting channel is aligned with the end part of the other end of the bearing position; then, carrying out reverse cladding, selecting a melting point at the other end of the bearing position of the precision gear shaft, starting laser cladding of a first circular ring, continuously finishing 1/12 times of overlapping cladding with a first circular ring channel according to program setting after cladding for one circle, then starting to walk a spiral line, setting the step length to be 10mm, filling the blank between the first spiral line by the channel, and finishing when the outer side of the channel is aligned with the inner side edge of the existing channel at the other end of the bearing position;
(6) grinding the bearing position of the precision gear shaft according to a drawing, wherein the single-side grinding amount is 0.5 mm;
(7) carrying out ultrasonic and surface dye inspection on the precision gear shaft, and detecting whether internal and surface defects exist;
(8) and (4) coating rust-proof oil on the precision gear shaft which is qualified by inspection, and packaging for later use.
Example four
The laser repairing method for the bearing position of the precise gear shaft of the blast furnace supercharger for eliminating the axial stress comprises the following steps of:
(1) according to the abrasion condition, the surface of the bearing position of the precision gear shaft is ground by 1.0mm on one side, and a fatigue abrasion layer is removed;
(2) cleaning the ground surface with absolute ethyl alcohol;
(3) preparing alloy powder, which is characterized by comprising the following components in percentage by weight: mo: 2.5%, Si: 1.26%%, Cr: 16%, C: 0.02%, Ni: 2.5 percent of Fe, and the balance of Fe, wherein each component of the alloy powder is powder with the purity of more than 99.9 percent and the granularity of 135-325 meshes;
(4) the precise gear shaft is mounted and clamped on a numerical control laser processing machine tool, alloy powder conveyed in place is scanned by a fiber laser through gravity, laser cladding is carried out on the bearing position of the precise gear shaft, and the laser cladding technological parameters are as follows: the size of a rectangular wide light spot is 2 multiplied by 14mm, and the laser power is as follows: 3.2kW, the scan speed is: 500 mm/min, cladding layer thickness 2.0 mm;
(5) during cladding, selecting a melting point at one end of the bearing position of the precision gear shaft, starting laser cladding of a first ring, continuously finishing 1/12 times of overlapping cladding with the first ring according to program setting after cladding for a circle, then starting to walk a spiral line, setting the step length to be 10mm, and finishing when the outer side of a melting channel is aligned with the end part of the other end of the bearing position; then, carrying out reverse cladding, selecting a melting point at the other end of the bearing position of the precision gear shaft, starting laser cladding of a first circular ring, continuously finishing 1/12 times of overlapping cladding with a first circular ring channel according to program setting after cladding for one circle, then starting to walk a spiral line, setting the step length to be 10mm, filling the blank between the first spiral line by the channel, and finishing when the outer side of the channel is aligned with the inner side edge of the existing channel at the other end of the bearing position;
(6) grinding the bearing position of the precision gear shaft according to a drawing, wherein the single-side grinding amount is 1.0 mm;
(7) carrying out ultrasonic and surface dye inspection on the precision gear shaft, and detecting whether internal and surface defects exist;
(8) and (4) coating rust-proof oil on the precision gear shaft which is qualified by inspection, and packaging for later use.
EXAMPLE five
The laser repairing method for the bearing position of the precise gear shaft of the blast furnace supercharger for eliminating the axial stress comprises the following steps of:
(1) according to the abrasion condition, the surface of the bearing position of the precision gear shaft is ground by 0.8mm on one side, and a fatigue abrasion layer is removed;
(2) cleaning the ground surface with absolute ethyl alcohol;
(3) preparing alloy powder, which is characterized by comprising the following components in percentage by weight: mo: 2.5%, Si: 1.32%, Cr: 17%, C: 0.03%, Ni: 3.5 percent of Fe, and the balance of Fe, wherein each component of the alloy powder is powder with the purity of more than 99.9 percent and the granularity of 135-325 meshes;
(4) the precise gear shaft is mounted and clamped on a numerical control laser processing machine tool, alloy powder conveyed in place is scanned by a fiber laser through gravity, laser cladding is carried out on the bearing position of the precise gear shaft, and the laser cladding technological parameters are as follows: the size of a rectangular wide light spot is 2 multiplied by 14mm, and the laser power is as follows: 3.3 kW, the scanning speed is: 600 mm/min, and the thickness of the cladding layer is 2.0 mm;
(5) during cladding, selecting a melting point at one end of the bearing position of the precision gear shaft, starting laser cladding of a first ring, continuously finishing 1/12 times of overlapping cladding with the first ring according to program setting after cladding for a circle, then starting to walk a spiral line, setting the step length to be 10mm, and finishing when the outer side of a melting channel is aligned with the end part of the other end of the bearing position; then, carrying out reverse cladding, selecting a melting point at the other end of the bearing position of the precision gear shaft, starting laser cladding of a first circular ring, continuously finishing 1/12 times of overlapping cladding with a first circular ring channel according to program setting after cladding for one circle, then starting to walk a spiral line, setting the step length to be 10mm, filling the blank between the first spiral line by the channel, and finishing when the outer side of the channel is aligned with the inner side edge of the existing channel at the other end of the bearing position;
(6) grinding the bearing position of the precision gear shaft according to a drawing, wherein the single-side grinding amount is 1.2 mm;
(7) carrying out ultrasonic and surface dye inspection on the precision gear shaft, and detecting whether internal and surface defects exist;
(8) and (4) coating rust-proof oil on the precision gear shaft which is qualified by inspection, and packaging for later use.
EXAMPLE six
The laser repairing method for the bearing position of the precise gear shaft of the blast furnace supercharger for eliminating the axial stress comprises the following steps of:
(1) according to the abrasion condition, the surface of the bearing position of the precision gear shaft is ground by 0.7mm on one side, and a fatigue abrasion layer is removed;
(2) cleaning the ground surface with absolute ethyl alcohol;
(3) preparing alloy powder, which is characterized by comprising the following components in percentage by weight: mo: 2.4%, Si: 1.26%, Cr: 15%, C: 0.02%, Ni: 3.0 percent of Fe, and the balance of Fe, wherein each component of the alloy powder is powder with the purity of more than 99.9 percent and the granularity of 135-325 meshes;
(4) the precise gear shaft is mounted and clamped on a numerical control laser processing machine tool, alloy powder conveyed in place is scanned by a fiber laser through gravity, laser cladding is carried out on the bearing position of the precise gear shaft, and the laser cladding technological parameters are as follows: the size of a rectangular wide light spot is 2 multiplied by 14mm, and the laser power is as follows: 3.1kW, the scan speed is: 480 mm/min, and the thickness of the cladding layer is 1.5 mm;
(5) during cladding, selecting a melting point at one end of the bearing position of the precision gear shaft, starting laser cladding of a first ring, continuously finishing 1/12 times of overlapping cladding with the first ring according to program setting after cladding for a circle, then starting to walk a spiral line, setting the step length to be 10mm, and finishing when the outer side of a melting channel is aligned with the end part of the other end of the bearing position; then, carrying out reverse cladding, selecting a melting point at the other end of the bearing position of the precision gear shaft, starting laser cladding of a first circular ring, continuously finishing 1/12 times of overlapping cladding with a first circular ring channel according to program setting after cladding for one circle, then starting to walk a spiral line, setting the step length to be 10mm, filling the blank between the first spiral line by the channel, and finishing when the outer side of the channel is aligned with the inner side edge of the existing channel at the other end of the bearing position;
(6) grinding the bearing position of the precision gear shaft according to a drawing, wherein the single-side grinding amount is 0.8 mm;
(7) carrying out ultrasonic and surface dye inspection on the precision gear shaft, and detecting whether internal and surface defects exist;
(8) and (4) coating rust-proof oil on the precision gear shaft which is qualified by inspection, and packaging for later use.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.