CN118237525A - Manufacturing method of chain plate - Google Patents
Manufacturing method of chain plate Download PDFInfo
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- CN118237525A CN118237525A CN202410350115.7A CN202410350115A CN118237525A CN 118237525 A CN118237525 A CN 118237525A CN 202410350115 A CN202410350115 A CN 202410350115A CN 118237525 A CN118237525 A CN 118237525A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000005242 forging Methods 0.000 claims abstract description 98
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000010791 quenching Methods 0.000 claims abstract description 26
- 230000000171 quenching effect Effects 0.000 claims abstract description 26
- 238000009966 trimming Methods 0.000 claims abstract description 24
- 238000003754 machining Methods 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 10
- 238000005496 tempering Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims 1
- 239000002918 waste heat Substances 0.000 claims 1
- 238000003303 reheating Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 6
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a manufacturing method of a chain plate, which relates to the technical field of forging processing of chain plates and comprises the following steps: s1, preparing forged round steel, and feeding the round steel into a bar shear for fixed-length blanking to obtain bars with the same size specification; s2, heating the cut bar stock for one time, and pre-forging the heated bar stock to prepare a blank; s3, performing secondary final forging on the prefabricated forging stock, and performing final forging forming by using a press machine to obtain a chain plate final forging stock; s4, performing primary hot fine trimming and punching molding on the chain plate rough blank by using a single-point press. According to the invention, round steel is subjected to fixed-length blanking, one-time heating pre-forging blank making and finish forging forming, then a single-point press is used for carrying out hot finish trimming and punching forming, and the chain plate is directly formed by hot finish trimming, so that the final dimensional precision of two side surfaces of the chain plate is achieved, the machining process is reduced, the cost of reheating quenching heat treatment is saved, the rotation flow in the chain plate machining process is simpler, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of chain plate processing, in particular to a manufacturing method of a chain plate.
Background
The chain plate, namely the caterpillar band, is a steel chain belt which surrounds the wheels of special vehicles such as tractors, tanks and the like, and is widely used due to strong environmental adaptability and adhesion with the ground.
At present, the processing of the chain plate is usually required to be respectively punched on the upper surface and the lower surface, the machining process and the rotation process are complex, the processing period of the chain plate is long, the processing cost of the chain plate is high, and the production cost of enterprises is increased.
Disclosure of Invention
The invention aims to provide a manufacturing method of a chain plate, which aims to solve the problems that the processing of the chain plate, which is proposed by the background technology, usually needs to be respectively die-cut on the upper surface and the lower surface, the machining process and the rotation process are complex, the processing period of the chain plate is long, the processing cost of the chain plate is high, and the production cost of enterprises is increased.
In order to achieve the above purpose, the present invention provides the following technical solutions: a manufacturing method of a chain plate comprises the following steps:
S1, preparing forged round steel, and feeding the round steel into a bar shear for fixed-length blanking to obtain bars with the same size specification;
S2, heating the cut bar stock for one time, and pre-forging the heated bar stock to prepare a blank;
s3, performing secondary final forging on the prefabricated forging stock, and performing final forging forming by using a press machine to obtain a chain plate final forging stock;
s4, performing primary hot precision trimming and punching molding on the chain plate final forging stock by using a single-point press;
S5, quenching the workpiece when the workpiece is not cooled after high-temperature deformation;
S6, after quenching, placing the workpiece into a tempering furnace for tempering treatment, and eliminating internal stress.
Preferably, in step S1, the flow of the sizing and slitting is as follows: firstly, setting parameters of cutting equipment according to the fixed-length data, fixing the plate on the cutting equipment, starting the equipment to cut according to the set parameters, and then collecting the cut plate.
Preferably, in step S2, the primary heating is performed by induction heating, the heating frequency is 500Hz-20kHz, and the heating temperature is 850-1050 ℃.
Preferably, in step S2, the pre-forging blank includes the steps of:
s21, preparing a pre-forging die of the chain plate, and preheating the pre-forging die;
S22, taking out the heated blank and placing the blank in a pre-forging die;
S23, starting the forging equipment to perform pre-forging blank making, so that the blank is initially formed.
Preferably, in step S3, the secondary heating uses a rapid forging chamber furnace to rapidly heat the pre-forged blank, and the blank is heated to 850-1150 ℃ and then is insulated for 10-18 min.
Preferably, in step S3, the final forging forming using the numerical control forging hammer includes the steps of:
S31, placing the secondarily heated blank into a clamping device of a die forging hammer, and clamping the blank by using a clamp;
s32, adjusting the die of the numerical control die forging hammer, wherein the die comprises parameters such as an upper die, a lower die, a die gap and the like;
S33, starting a die forging hammer to perform forming operation on the blank, and obtaining a chain plate rough blank.
Preferably, in step S4, the trimming processing of the rough blank of the link plate includes the following steps:
S41, preheating an inner die of the press machine, wherein the preheating temperature is 150-300 ℃;
s42, placing the chain plate rough blank into a closed single-point press, and fixing by using a clamp;
S43, starting a closed single-point press to carry out trimming processing, and taking out a processed chain plate rough blank after finishing processing;
S44, cleaning the cut waste materials of the processing site in the press, and recycling the waste materials.
Preferably, in step S5, the hot finishing forming of the trimmed link plate includes the following steps:
S51, placing the cut blanks on cutting equipment and preheating;
S52, starting cutting equipment to perform hot finish cutting processing, and performing high-precision cutting on the upper plane and the lower plane of the chain plate;
and S53, taking out the cut chain plate after finishing processing, and performing quality inspection.
Preferably, in step S6, the quenching treatment is performed by using oil with a relatively mild cooling rate or 160 ℃ nitrate or alkali bath as a medium, and after a period of time, the quenching treatment is taken out and cooled slowly in air.
Compared with the prior art, the invention has the beneficial effects that:
In the method, the plate material is cut to a fixed length, the pre-forging blank is heated once, a numerical control forging hammer is used for final forging molding after secondary heating, then a closed single-point press machine is used for trimming, and the hot finish cutting machining direct molding is carried out on the chain plate after trimming, so that the machining procedure is reduced, the rotation flow in the machining process of the chain plate is simpler, the machining period is shorter, the machining cost is reduced, the quenching treatment is carried out through quenching by oil with a mild cooling speed or 160 ℃ nitrate or alkali bath, the quenching is taken out after a period of time is kept, and then the quenching is carried out in the air slowly, so that the thermal stress is reduced, part of tissue stress can be cleared, and the product quality of the connecting plate is effectively improved.
Drawings
FIG. 1 is a flow chart of a method of making a link plate of the present invention;
Fig. 2 is a flow chart of data acquisition analysis of a manufacturing method of a link plate according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The technical scheme of the embodiment is as follows: a manufacturing method of a chain plate comprises the following steps:
step one, preparing forged plates, and sending the plates into a splitting machine for fixed-length splitting to obtain chain plate blanks with the same size specification;
the fixed-length slitting process comprises the following steps of: firstly, setting parameters of cutting equipment according to the fixed-length data, placing the plate on the cutting equipment for fixing, starting the equipment to cut according to the set parameters, and then collecting the cut plate;
Heating the cut blanks for one time, and pre-forging the heated blanks to prepare blanks;
wherein, the primary heating adopts an induction heating mode, the heating frequency is 500Hz-20kHz, and the heating temperature is 1050 ℃;
specifically, the pre-forging blank comprises the following steps: preparing a pre-forging die of the chain plate, and preheating the pre-forging die; taking out the heated blank and placing the blank into a pre-forging die; starting forging equipment to perform pre-forging blank making, so that the blank is preliminarily molded;
step three, carrying out secondary heating on the prefabricated forging stock, and carrying out final forging forming by using a numerical control die forging hammer to obtain a chain plate rough blank;
the secondary heating adopts a rapid forging chamber type furnace to rapidly heat and raise the temperature of the pre-forged blank, and the blank is heated to 1050 ℃ and then is insulated for 16min;
specifically, the final forging forming by using the numerical control die forging hammer comprises the following steps of: placing the secondarily heated blank into a clamping device of a die forging hammer, and clamping the blank by using a clamp; adjusting the die of the numerical control die forging hammer, wherein the die comprises parameters such as an upper die, a lower die, a die gap and the like; starting a die forging hammer to perform forming operation on the blank to obtain a chain plate rough blank;
fourthly, trimming the rough blank of the chain plate by using a closed single-point press;
specifically, the trimming processing of the rough blank of the chain plate comprises the following steps:
41 Preheating the inner die of the press at 150-300 ℃;
42 Placing the chain plate rough blank into a closed single-point press, and fixing by using a clamp;
43 Starting a closed single-point press machine to carry out trimming processing, and taking out a processed chain plate rough blank after finishing processing;
44 Cleaning the cutting waste material of the processing site in the press, and recycling the waste material
Step five, carrying out hot finish cutting and forming on the chain plate after trimming; specifically, the hot finish cutting and forming of the trimmed chain plate comprises the following steps:
51 Placing the cut blanks on cutting equipment and preheating;
52 Starting cutting equipment to perform hot finish cutting processing, and performing high-precision cutting on the upper plane and the lower plane of the chain plate;
53 After finishing processing, taking out the cut chain plate for quality inspection;
Step six, quenching the chain plate, and performing surface polishing treatment on the chain plate by using a shot blasting machine after cooling to obtain a chain plate finished product; the quenching treatment adopts oil with a mild cooling rate or 160 ℃ nitrate or alkali bath as a medium for quenching, and is taken out after being kept for a period of time, and is slowly cooled in air.
Example 2
The technical scheme of the embodiment is as follows: a manufacturing method of a chain plate comprises the following steps:
step one, preparing forged plates, and sending the plates into a splitting machine for fixed-length splitting to obtain chain plate blanks with the same size specification;
the fixed-length slitting process comprises the following steps of: firstly, setting parameters of cutting equipment according to the fixed-length data, placing the plate on the cutting equipment for fixing, starting the equipment to cut according to the set parameters, and then collecting the cut plate;
Heating the cut blanks for one time, and pre-forging the heated blanks to prepare blanks;
Wherein, the primary heating adopts an induction heating mode, the heating frequency is 500Hz-20kHz, and the heating temperature is 850 ℃;
specifically, the pre-forging blank comprises the following steps: preparing a pre-forging die of the chain plate, and preheating the pre-forging die; taking out the heated blank and placing the blank into a pre-forging die; starting forging equipment to perform pre-forging blank making, so that the blank is preliminarily molded;
step three, carrying out secondary heating on the prefabricated forging stock, and carrying out final forging forming by using a numerical control die forging hammer to obtain a chain plate rough blank;
The secondary heating adopts a rapid forging chamber type furnace to rapidly heat and raise the temperature of the pre-forged blank, and the blank is heated to 850 ℃ and then is insulated for 16min;
specifically, the final forging forming by using the numerical control die forging hammer comprises the following steps of: placing the secondarily heated blank into a clamping device of a die forging hammer, and clamping the blank by using a clamp; adjusting the die of the numerical control die forging hammer, wherein the die comprises parameters such as an upper die, a lower die, a die gap and the like; starting a die forging hammer to perform forming operation on the blank to obtain a chain plate rough blank;
fourthly, trimming the rough blank of the chain plate by using a closed single-point press;
specifically, the trimming processing of the rough blank of the chain plate comprises the following steps:
41 Preheating the inner die of the press at 150-300 ℃;
42 Placing the chain plate rough blank into a closed single-point press, and fixing by using a clamp;
43 Starting a closed single-point press machine to carry out trimming processing, and taking out a processed chain plate rough blank after finishing processing;
44 Cleaning the cutting waste material of the processing site in the press, and recycling the waste material
Step five, carrying out hot finish cutting and forming on the chain plate after trimming; specifically, the hot finish cutting and forming of the trimmed chain plate comprises the following steps:
51 Placing the cut blanks on cutting equipment and preheating;
52 Starting cutting equipment to perform hot finish cutting processing, and performing high-precision cutting on the upper plane and the lower plane of the chain plate;
53 After finishing processing, taking out the cut chain plate for quality inspection;
Step six, quenching the chain plate, and performing surface polishing treatment on the chain plate by using a shot blasting machine after cooling to obtain a chain plate finished product; the quenching treatment adopts oil with mild cooling speed as a medium for direct cooling.
Example 3
The technical scheme of the embodiment is as follows: a manufacturing method of a chain plate comprises the following steps:
step one, preparing forged plates, and sending the plates into a splitting machine for fixed-length splitting to obtain chain plate blanks with the same size specification;
the fixed-length slitting process comprises the following steps of: firstly, setting parameters of cutting equipment according to the fixed-length data, placing the plate on the cutting equipment for fixing, starting the equipment to cut according to the set parameters, and then collecting the cut plate;
Heating the cut blanks for one time, and pre-forging the heated blanks to prepare blanks;
wherein, the primary heating adopts an induction heating mode, the heating frequency is 500Hz-20kHz, and the heating temperature is 950 ℃;
specifically, the pre-forging blank comprises the following steps: preparing a pre-forging die of the chain plate, and preheating the pre-forging die; taking out the heated blank and placing the blank into a pre-forging die; starting forging equipment to perform pre-forging blank making, so that the blank is preliminarily molded;
step three, carrying out secondary heating on the prefabricated forging stock, and carrying out final forging forming by using a numerical control die forging hammer to obtain a chain plate rough blank;
The secondary heating adopts a rapid forging chamber type furnace to rapidly heat and raise the temperature of the pre-forged blank, and the blank is heated to 950 ℃ and then is insulated for 16min;
specifically, the final forging forming by using the numerical control die forging hammer comprises the following steps of: placing the secondarily heated blank into a clamping device of a die forging hammer, and clamping the blank by using a clamp; adjusting the die of the numerical control die forging hammer, wherein the die comprises parameters such as an upper die, a lower die, a die gap and the like; starting a die forging hammer to perform forming operation on the blank to obtain a chain plate rough blank;
fourthly, trimming the rough blank of the chain plate by using a closed single-point press;
specifically, the trimming processing of the rough blank of the chain plate comprises the following steps:
41 Preheating the inner die of the press at 150-300 ℃;
42 Placing the chain plate rough blank into a closed single-point press, and fixing by using a clamp;
43 Starting a closed single-point press machine to carry out trimming processing, and taking out a processed chain plate rough blank after finishing processing;
44 Cleaning the cutting waste material of the processing site in the press, and recycling the waste material
Step five, carrying out hot finish cutting and forming on the chain plate after trimming; specifically, the hot finish cutting and forming of the trimmed chain plate comprises the following steps:
51 Placing the cut blanks on cutting equipment and preheating;
52 Starting cutting equipment to perform hot finish cutting processing, and performing high-precision cutting on the upper plane and the lower plane of the chain plate;
53 After finishing processing, taking out the cut chain plate for quality inspection;
Step six, quenching the chain plate, and performing surface polishing treatment on the chain plate by using a shot blasting machine after cooling to obtain a chain plate finished product; wherein, the quenching treatment adopts water as a medium to directly cool, and is taken out after cooling.
Comparative example 1
Referring to fig. 1, the present embodiment provides a manufacturing method of a link plate, which is substantially the same as that of embodiment 1, and the main differences are that: step five, punching the upper and lower surfaces of the cut chain plate; the specific flow is as follows: placing the cut chain plate on a workbench of a punch or a punching machine, installing an upper die and a lower die, adjusting the positions and gaps of the dies, and ensuring the accuracy and stability of blanking processing; firstly, punching the upper surface of a chain plate; after the punching of the upper surface is completed, the chain plate is turned over, and then punching of the lower surface is performed; and collecting after the blanking processing of the upper surface and the lower surface is completed.
Test:
The link plates produced by examples 1-3 were recorded as example groups 1-3, the link plates produced by comparative example 1 were recorded as comparative group 1, the link plates of example groups 1-3 and comparative group 1 were tested for yield strength (GB/T232-2010), tensile strength (GB/T28487-2012) and impact toughness (HB 5278-1984), and the machining process during production was recorded, and the relevant test data were recorded in Table 1.
Table 1: test data record table
As can be seen from Table 1, the link plates prepared by examples 1 to 3 are superior to comparative example 1 in terms of yield strength, tensile strength and impact toughness, and have higher product quality, excellent mechanical properties, particularly impact toughness, and less machining processes, simpler rotation process and short machining period than comparative example 1.
In the method, the plate material is cut to length, the pre-forging blank is heated once, a numerical control die forging hammer is used for final forging molding after secondary heating, then a closed single-point press machine is used for trimming, and the hot finish cutting machining and direct molding are carried out on the chain plate after trimming, so that the machining procedure is reduced, the rotation flow in the chain plate machining process is simpler, quenching treatment is carried out through oil or 160 ℃ nitrate or alkali bath quenching with a mild cooling speed, the quenching treatment is carried out after a period of time is kept, and then the quenching treatment is carried out in air, so that the thermal stress is reduced, part of tissue stress is cleared, and the product quality of the connecting plate is effectively improved.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The manufacturing method of the chain plate is characterized by comprising the following steps of:
S1, preparing forged round steel, and feeding the round steel into a bar shear for fixed-length blanking to obtain bars with the same size specification;
S2, heating the cut bar stock for one time, and pre-forging the heated bar stock to prepare a blank;
s3, performing secondary final forging on the prefabricated forging stock, and performing final forging forming by using a press machine to obtain a chain plate final forging stock;
s4, performing primary hot precision trimming and punching molding on the chain plate final forging stock by using a single-point press;
S5, quenching the workpiece when the workpiece is not cooled after high-temperature deformation;
S6, after quenching, placing the workpiece into a tempering furnace for tempering treatment, and eliminating internal stress.
2. The method according to claim 1, wherein in step S1, the process of cutting to length is as follows: firstly, setting parameters of cutting equipment according to the fixed-length data, placing round steel on a bar stock to be cut and fixed, starting the equipment to cut according to the set parameters, and then collecting the cut bar stock.
3. The method according to claim 1, wherein in step S2, the primary heating is performed by induction heating, the heating frequency is 500Hz-20kHz, and the heating temperature is 1150-1200 ℃.
4. The method of manufacturing a link plate according to claim 1, wherein in step S2, the pre-forging stock includes the steps of:
s21, preparing a forging die of the chain plate, and preheating the forging die;
S22, taking out the heated blank and placing the blank in a pre-forging die;
S23, starting the forging equipment to perform pre-forging blank making, so that the blank is initially formed.
5. The method according to claim 1, wherein in step S3, the preform is placed in a finish forging die, and a press is started for finish forging to obtain a finish forging preform.
6. The method for manufacturing a link plate according to claim 1, wherein in step S4, the punching and finishing machining of the link plate final forging stock includes the steps of:
s41, placing the chain plate final forging stock into a closed single-point press, and fixing by using a die;
s42, starting a closed single-point press machine to perform punching and finish trimming processing, and taking out a finished chain plate final forging stock after processing;
s43, cleaning the cut waste materials of the processing site in the press machine, and recycling the waste materials.
7. The method of manufacturing a link plate according to claim 1, wherein in step S5, the heat treatment of the trimmed link plate includes the steps of:
s51, the blank after edge cutting is at the temperature of above 850 ℃, and enters a quenching oil tank for waste heat quenching, wherein the quenching treatment adopts oil or quenching liquid with a mild cooling speed as a medium.
8. The method of manufacturing a link plate according to claim 1, wherein in step S6, the tempering process for the link plate includes the steps of:
s61, placing the quenched workpiece into a tempering furnace for tempering, eliminating internal stress, and improving the plasticity and toughness of the product to enable the product to meet the use requirements;
S62, taking out the finished chain plate after the heat treatment is finished, and carrying out quality inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410350115.7A CN118237525A (en) | 2024-03-26 | 2024-03-26 | Manufacturing method of chain plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410350115.7A CN118237525A (en) | 2024-03-26 | 2024-03-26 | Manufacturing method of chain plate |
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| Publication Number | Publication Date |
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| CN118237525A true CN118237525A (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410350115.7A Pending CN118237525A (en) | 2024-03-26 | 2024-03-26 | Manufacturing method of chain plate |
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| Country | Link |
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| CN (1) | CN118237525A (en) |
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- 2024-03-26 CN CN202410350115.7A patent/CN118237525A/en active Pending
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