CN111451711A - Coal machine part repairing and reinforcing method - Google Patents
Coal machine part repairing and reinforcing method Download PDFInfo
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- CN111451711A CN111451711A CN202010281220.1A CN202010281220A CN111451711A CN 111451711 A CN111451711 A CN 111451711A CN 202010281220 A CN202010281220 A CN 202010281220A CN 111451711 A CN111451711 A CN 111451711A
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- repairing
- strengthening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
Abstract
The invention belongs to the field of additive manufacturing repair, and particularly relates to a method for repairing and strengthening parts of a coal machine, which comprises the steps of problem diagnosis, repair strengthening and integrated repair, wherein the damaged parts can be rapidly determined by integrating the conditions that different parts are easy to damage in the production process of the coal machine, an effective repair strengthening scheme is formulated, batch integrated repair strengthening is carried out according to the types of the parts, the damage conditions and the repair strengthening operation steps, machine operation is adopted in the whole process, the repair strengthening efficiency is improved, the repair strengthening period is controllable, the performance of the parts is effectively improved, and meanwhile, the repair efficiency of the parts of the coal machine is effectively improved.
Description
Technical Field
The invention relates to the technical field of additive manufacturing repair, in particular to a method for repairing and strengthening parts of a coal machine.
Background
The coal mine industry adopts large-scale mechanical equipment for operation, the abrasion of equipment parts is serious, the specific related equipment types comprise engineering machinery, transportation equipment, coal machine parts, supporting equipment, tunneling parts, coal mining parts and the like, wherein the coal machine parts and the tunneling parts are easy to damage due to high use frequency, specifically, a sealing failure ratio is 57% in the actual production process of a gear assembly, a bearing failure ratio is 22% in the actual production process, and a static connection failure ratio is 9%, so that the actual production is greatly influenced, the performance requirement on the equipment parts is high, in the prior art, a surfacing mode is mostly adopted for the maintenance mode of the damaged coal machine parts, for example, the technical scheme mentioned in the prior art CN201810915280.4, the coal machine parts are put into production after the integrity of the parts is recovered, and the maintenance of the single-piece parts is mostly carried out in a manual mode, and the maintenance of the coal machine parts is carried out through the mode, the efficiency is low, one at a time, and intensity still keeps original level or has certain decline after the part after the maintenance is put into use again, leads to using quality problem and safety problem easily, needs many technical staff or complicated equipment to carry out specific maintenance to the multiple repair mode of different parts, leads to time and human cost higher.
Therefore, a method for efficiently repairing and strengthening the parts of the coal machine and performing batch repair is urgently needed.
Disclosure of Invention
Based on the above, the invention aims to provide a method for repairing and strengthening parts of a coal machine.
Specifically, the invention provides the following technical scheme:
a method for repairing and strengthening parts of a coal machine is characterized by comprising the following steps:
the method comprises the steps of problem diagnosis, specifically, analyzing the positions and functions of damaged parts of the coal machine, evaluating the damage degree, and making a repair strengthening scheme according to the functions and the damage degree;
the repairing and strengthening step specifically comprises the following steps: repairing and strengthening a gear set, repairing and strengthening a groove component, repairing and strengthening an oil cylinder piston component and repairing and strengthening a coal mining tunneling machine component;
the gear set repairing and strengthening comprises scraper chain wheel shaft set sprocket tooth pressure feeding, abrasion and broken tooth repairing and strengthening, and reversed loader tail shaft set sprocket tooth corrosion and abrasion repairing and strengthening, wherein the gear set repairing and strengthening step comprises abrasion surface laser cladding, surface laser quenching and surface abrasion resistance strengthening;
the groove part repairing and strengthening comprises a middle groove, a transition groove, a scraper and a reversed loader concave-convex groove, wherein the groove part repairing and strengthening comprises the steps of surface laser cladding and wear-resistant layer cladding and strengthening;
the repairing and strengthening of the oil cylinder piston assembly comprises the wear repairing and strengthening of an oil cylinder and a piston rod component, and the repairing and strengthening of the oil cylinder piston assembly comprises the steps of surface alloying treatment, laser cladding and laser quenching strengthening;
the coal mining development machine component repairing and strengthening comprises cutting tooth abrasion repairing and strengthening, and the coal mining development machine component repairing and strengthening step comprises tooth surface alloying treatment, abrasion part laser cladding and abrasion part laser quenching strengthening;
and integrating the repairing steps, and performing batch repairing on the parts with the same type of problems.
The problem diagnosis step is used for diagnosing and analyzing problems of different coal machine parts, and specifically comprises the following steps:
the internal connecting gear is failed, specifically, the internal connecting gear is worn, pitted, glued, plastically deformed and broken;
the middle plate, the bottom plate and the ledge of the middle groove are worn, and the middle plate, the bottom plate and the ledge of the groove and the transition groove are worn, so that the wear of the middle plate, the bottom plate and the ledge of the groove and the transition groove and the wear of a chain wheel nest are changed;
the failure of oil cylinder components, specifically the excessive wear of the oil cylinder and the piston rod;
the coal mining and tunneling machine component fails, and particularly, the cutting teeth of the coal mining machine and the tunneling machine are excessively worn.
The integration repairing step specifically comprises the steps of carrying out batch combination repairing on similar problems, carrying out batch combination repairing on components of the same type, and carrying out simultaneous batch repairing by the same repairing operation.
The repairing and strengthening step further comprises the steps of determining a repairing scheme, specifically, selecting a specific repairing and strengthening step according to the damage degree of the coal machine assembly, laying out repairing and strengthening components according to the sizes of the components, and determining the processing sequence of the components according to the repairing operation.
The technical scheme has the beneficial effects that:
1. the method and the device perform batch execution on parts of the same type, problems of the same type and similar operations, and greatly improve the repair efficiency.
2. Aiming at the problems of pertinence, different repairing and strengthening operations are carried out on parts with different damage degrees, so that the repairing and strengthening are more targeted.
3. When the repair operation is carried out, the pertinence is strong for different functions and damage conditions, the performance of parts is improved, and the service life of parts is prolonged.
4. And the machine operation is adopted, so that the labor cost input is reduced, the repair period is controllable, and the repair efficiency is ensured.
Drawings
FIG. 1 is a process flow diagram 1 of the present invention;
FIG. 2 is a flow chart of the method of the present invention 2;
Detailed Description
In order to make the present invention more comprehensible to those skilled in the art, the present invention is further described in the following with reference to examples and the accompanying drawings.
Example (b):
a method for repairing and strengthening parts of a coal machine is characterized by comprising the following steps:
the method comprises the steps of problem diagnosis, specifically, analyzing the positions and functions of damaged parts of the coal machine, evaluating the damage degree, and making a repair strengthening scheme according to the functions and the damage degree;
in particular, in the coal mine production process, a series of coal machine assemblies are required, wherein various parts are involved.
Such as a scraper, is a transportation machine used on the working face of coal mining. The method is mainly used for the crossheading transportation of coal mining working faces and mining areas, and can also be used for driving working faces of coal roadways and semi-coal-rock roadways. It can be transported up or down, generally no more than 35 degrees. The downward transportation is generally not more than 25 degrees, and preferably not more than 20 degrees. The device mainly comprises the following parts: (1) a driving device: comprises a motor, a speed reducer, a transmission chain wheel and the like; (2) a conveying device: comprises a driving chain wheel, a driven chain wheel, a scraper chain and the like; (3) a housing. The main skin damage is failure of the sprocket, the failure modes comprise pressure feed, abrasion and tooth breakage, corrosion and abrasion of the sprocket of the tail shaft set of the reversed loader and surface alloying of the abraded part, wherein the main maintenance treatment measures comprise laser quenching of the surface of the sprocket and laser cladding of the abraded part.
For example, the concave-convex groove of the reversed loader is a convex chute from the climbing section to the bent chute of the horizontal section; the chute from the horizontal section to the climbing section is a concave chute. Their cross-sectional configuration is identical to that of the central trough. The transfer conveyor has the function that the body of the transfer conveyor is raised to a certain height from the bottom plate in a transition manner to form a firm suspension bridge structure so as to be conveniently overlapped above the tail of the belt conveyor and convey coal onto the belt conveyor. Its the reason that wearing and tearing appear mainly has gathers needs the pretightning force at chain operation process, the tongue medium plate bears the decurrent positive pressure of scraper blade, the ascending pressure in scraper blade both ends is received to the recess pterygoid lamina, thereby lead to the wearing and tearing of tongue and groove, the elevating conveyor is at long-time operation in-process, can be because the wearing and tearing of tongue take place the situation of leaking the coal, lead to the broken chain accident easily, mainly there is the pterygoid lamina thickening to the improvement of this part among the prior art at present, or improve the structure of recess, and the actual problem in the production can not solved fast to the improvement of above two kinds of modes, the overall structure that needs the cooperation equipment improves the use.
Specifically, in analyzing the component problem, the degree of wear of the component is determined, and whether the component is worn or not is determined
The repairing and strengthening step specifically comprises the following steps: repairing and strengthening a gear set, repairing and strengthening a groove component, repairing and strengthening an oil cylinder piston component and repairing and strengthening a coal mining tunneling machine component;
the gear set repairing and strengthening comprises scraper chain shaft set sprocket tooth pressure feeding, abrasion and broken tooth repairing and strengthening, and reversed loader tail shaft set sprocket tooth corrosion and abrasion repairing and strengthening, wherein the gear set repairing and strengthening step comprises pick abrasion surface laser cladding, surface laser quenching and surface abrasion resistance strengthening;
the groove part repairing and strengthening comprises a middle groove, a transition groove, a scraper and a reversed loader concave-convex groove, wherein the groove part repairing and strengthening comprises the steps of surface laser cladding and wear-resistant layer cladding and strengthening;
the specific treatment measures are that a wear-resistant layer with a certain shape is cladded on the easily worn part (such as a middle plate, a bottom plate, a ledge, a slideway and the like) of the scraper conveyor by using spraying cladding equipment, an organic polymer material is adopted to coat the easily worn part, the wear resistance is improved, and a wear-resistant material is added on the easily worn part.
The repairing and strengthening of the oil cylinder piston assembly comprises the wear repairing and strengthening of an oil cylinder and a piston rod component, and the repairing and strengthening of the oil cylinder piston assembly comprises the steps of surface alloying treatment, laser cladding and laser quenching strengthening;
the specific treatment measures are that wear-resistant alloy materials are added to perform surface alloying on the surfaces of the teeth, the surface alloying on the tooth surfaces of failure parts is performed, and the laser quenching is performed on the failure parts.
The coal mining development machine component repairing and strengthening comprises cutting tooth abrasion repairing and strengthening, and the coal mining development machine component repairing and strengthening step comprises tooth surface alloying treatment, abrasion part laser cladding and abrasion part laser quenching strengthening;
the specific treatment measures are that wear-resistant alloy materials are added to perform surface alloying on the surfaces of the teeth, the failure parts are subjected to laser cladding treatment, and the failure parts are subjected to laser quenching.
And integrating the repairing steps, and performing batch repairing on the parts with the same type of problems.
The problem diagnosis step is used for diagnosing and analyzing problems of different coal machine parts, and specifically comprises the following steps:
the internal connecting gear is failed, specifically, the internal connecting gear is worn, pitted, glued, plastically deformed and broken;
the middle plate, the bottom plate and the ledge of the middle groove are worn, and the middle plate, the bottom plate and the ledge of the groove and the transition groove are worn, so that the wear of the middle plate, the bottom plate and the ledge of the groove and the transition groove and the wear of a chain wheel nest are changed;
the failure of oil cylinder components, specifically the excessive wear of the oil cylinder and the piston rod;
the coal mining and tunneling machine component fails, and particularly, the cutting teeth of the coal mining machine and the tunneling machine are excessively worn.
The integration repairing step specifically comprises the steps of carrying out batch combination repairing on similar problems, carrying out batch combination repairing on components of the same type, and carrying out simultaneous batch repairing by the same repairing operation.
Specifically, in the integrated repairing step, parts needing laser cladding are respectively treated, computer-controlled laser cladding operation is adopted according to the material properties and surface damage conditions of different parts, meanwhile, the treatment step of surface alloying of wear-resistant alloy materials is carried out sequentially according to the related alloy materials, and in the laser quenching step, all parts needing treatment are sequentially subjected to laser quenching treatment, so that the batch treatment efficiency is improved.
The repairing and strengthening step further comprises the steps of determining a repairing scheme, specifically, selecting a specific repairing and strengthening step according to the damage degree of the coal machine assembly, laying out repairing and strengthening components according to the sizes of the components, and determining the processing sequence of the components according to the repairing operation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A method for repairing and strengthening parts of a coal machine is characterized by comprising the following steps:
the method comprises the steps of problem diagnosis, specifically, analyzing the positions and functions of damaged parts of the coal machine, evaluating the damage degree, and making a repair strengthening scheme according to the functions and the damage degree;
the repairing and strengthening step specifically comprises the following steps: repairing and strengthening a gear set, repairing and strengthening a groove component, repairing and strengthening an oil cylinder piston component and repairing and strengthening a coal mining tunneling machine component;
the gear set repairing and strengthening comprises scraper chain wheel shaft set sprocket tooth pressure feeding, abrasion and broken tooth repairing and strengthening, and reversed loader tail shaft set sprocket tooth corrosion and abrasion repairing and strengthening, wherein the gear set repairing and strengthening step comprises abrasion surface laser cladding, surface laser quenching and surface abrasion resistance strengthening;
the groove part repairing and strengthening comprises a middle groove, a transition groove, a scraper and a reversed loader concave-convex groove, wherein the groove part repairing and strengthening comprises the steps of surface laser cladding and wear-resistant layer cladding and strengthening;
the repairing and strengthening of the oil cylinder piston assembly comprises the wear repairing and strengthening of an oil cylinder and a piston rod component, and the repairing and strengthening of the oil cylinder piston assembly comprises the steps of surface alloying treatment, laser cladding and laser quenching strengthening;
the coal mining development machine component repairing and strengthening comprises cutting tooth abrasion repairing and strengthening, and the coal mining development machine component repairing and strengthening step comprises tooth surface alloying treatment, abrasion part laser cladding and abrasion part laser quenching strengthening;
and integrating the repairing steps, and performing batch repairing on the parts with the same type of problems.
2. The method of repairing and reinforcing components of a coal machine of claim 1, wherein: the problem diagnosis step is used for diagnosing and analyzing problems of different coal machine parts, and specifically comprises the following steps:
the internal connecting gear is failed, specifically, the internal connecting gear is worn, pitted, glued, plastically deformed and broken;
the middle plate, the bottom plate and the ledge of the middle groove are worn, and the middle plate, the bottom plate and the ledge of the groove and the transition groove are worn, so that the wear of the middle plate, the bottom plate and the ledge of the groove and the transition groove and the wear of a chain wheel nest are changed;
the failure of oil cylinder components, specifically the excessive wear of the oil cylinder and the piston rod;
the coal mining and tunneling machine component fails, and particularly, the cutting teeth of the coal mining machine and the tunneling machine are excessively worn.
3. The method of repairing and reinforcing components of a coal machine of claim 1, wherein: the integration repairing step specifically comprises the steps of carrying out batch combination repairing on similar problems, carrying out batch combination repairing on components of the same type, and carrying out simultaneous batch repairing by the same repairing operation.
4. The method of repairing and reinforcing components of a coal machine of claim 1, wherein: the repairing and strengthening step further comprises the steps of determining a repairing scheme, specifically, selecting a specific repairing and strengthening step according to the damage degree of the coal machine assembly, laying out repairing and strengthening components according to the sizes of the components, and determining the processing sequence of the components according to the repairing operation.
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| CN202010281220.1A CN111451711A (en) | 2020-04-10 | 2020-04-10 | Coal machine part repairing and reinforcing method |
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| CN202010281220.1A CN111451711A (en) | 2020-04-10 | 2020-04-10 | Coal machine part repairing and reinforcing method |
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