CN110712014A - Production process of anchor chain for sea ship - Google Patents
Production process of anchor chain for sea ship Download PDFInfo
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- CN110712014A CN110712014A CN201911148113.5A CN201911148113A CN110712014A CN 110712014 A CN110712014 A CN 110712014A CN 201911148113 A CN201911148113 A CN 201911148113A CN 110712014 A CN110712014 A CN 110712014A
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the technical field of ships and discloses a production process of an anchor chain for a marine vessel, which comprises the following steps: step 1), preparing materials: the steel for preparing the anchor chain is the killed steel, the length of the whole round steel of the killed steel cannot meet the fixed length requirement, the length of the whole round steel of the killed steel must meet the multiple length requirement, namely the total length is equal to the length of two stub bars plus the length of N bars (namely the multiple length) plus the width of N saw gaps, and the sum of the lengths of the two stub bars is controlled to be 40-50 mm. This marine anchor chain's production technology, through set up left shallow slot respectively on the left interface and the right interface of round steel looper before the round steel looper flashes the butt welding, left draw-in groove, right shallow slot and right draw-in groove, simultaneously when buckling, whole anchor chain welded shaping is welded to last rethread flash of light butt welding, so not only can effectively guarantee the stability of the rigid structure of round steel looper, can also pass through the structure and the joint effect before the draw-in groove, can provide last one effectual guarantee under bearing the extreme tension state for the round steel looper.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a production process of an anchor chain for a marine vessel.
Background
The anchor chain is a special chain for connecting an anchor and a ship body and transmitting the holding power of the anchor, and usually comprises an anchor end chain link, a middle chain link, a tail end chain link and the like, the chain link structure can be divided into a blocked anchor chain and a non-blocked anchor chain, the former has higher strength than the latter, the chain link can be divided into a cast steel chain and an electric welding chain according to the manufacturing method, the length of the chain is taken as a unit, the standard length of each section of the chain is 27.5m, the sections are connected by using connecting links or connecting shackles, the chain length allocated to each main anchor on the side of a million-ton wheel is about 12 sections, the chain is mainly used for connecting the anchor and the ship body and transmitting the holding power of the anchor to the ship body, when the chain link is thrown out, the chain link has certain weight, the external force such as wind current and the like applied to the ship in water can be buffered, the acting force of the anchor chain on the anchor on a horizontal underwater part is kept horizontal, the reliable holding of the anchor is beneficial to the reliable holding of the anchor, and the part is blocked, and also provides a portion of the anchoring force.
The existing anchor chain in the market is mainly improved aiming at a flash welding mode in a production process at present, so that the problem of insufficient rigidity and connection firmness of the anchor chain is caused, and the production process of the anchor chain for the marine vessel is provided for solving the problem.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a production process of an anchor chain for a marine vessel, which has the advantages of strong rigidity, firm connection and the like and solves the problem of insufficient rigidity and firm connection degree of the anchor chain in the market.
(II) technical scheme
In order to achieve the purposes of strong rigidity and firm connection, the invention provides the following technical scheme: a production process of an anchor chain for a sea ship comprises the following steps:
step 1), preparing materials: the steel for preparing the anchor chain is calmed steel, and the length of the whole round steel of the calmed steel cannot meet the fixed length requirement, so that the length of the whole round steel of the calmed steel must meet the multiple length requirement, namely the total length is equal to the length of two stub bars plus the length of N bars (namely the multiple length) plus the width of N saw gaps, and the sum of the lengths of the two stub bars is controlled to be 40-50 mm;
step 2), casting and forming: pouring the smelted molten killed steel into each fixed mold, reserving a left connector and a right connector for each anchor chain during casting molding, arranging a left shallow groove on each left connector, arranging a left clamping groove in each left shallow groove, arranging a right shallow groove on each right connector, arranging a right clamping groove in each right shallow groove, and taking out the anchor chain which is formed by cooling the interior of the mold for later use after the molten steel is cooled;
step 3), heating: heating the round steel to 860-980 ℃ by adopting an intermediate frequency heating furnace to ensure that the temperature of the core part of the round steel is close to that of the surface;
step 4), bending and butting: the heated round steel is bent on a ring bending machine, a bending mandrel is arranged at two initial positions where the round steel is to be bent, the round steel is bent around the bending mandrel to form a U-shaped structure with a horizontal bottom, two sides of the U-shaped structure are bent around the bending mandrel to the middle, so that a left connector and a right connector of the round steel are close to each other, when the bottom gap is 1cm, a fixed shallow beam is clamped by a mechanical claw at the bottom of a mechanical arm, two fixed blocks are fixedly arranged at the bottom of the fixed shallow beam, meanwhile, downward pressure is applied to the round steel by downward pressing clamps at two sides of the bottom of the mechanical arm, the fixed shallow beam and the fixed blocks are embedded into grooves of a left shallow groove, a left clamping groove, a right shallow groove and a right clamping groove in the left connector and the right connector, and the downward pressure is simultaneously pushed forwards by a left push mold and a right push mold behind the bending mandrel and the round steel, so that the bending work of the round steel can be stably performed, the conditions of abnormity and deformation can not occur, when the minimum gap of the bottom is 2-3mm, and the two end surfaces form a V-shaped opening with the bottom not in contact, the bending is stopped, and a curved ring is formed;
step 5), flash butt welding: preheating a round steel curved ring, keeping the preheating temperature at 840-900 ℃, welding the curved ring by a light welding machine, wherein the flash welding machine is provided with a curved mandrel arranged at the bent part of the round steel curved ring, and is also provided with a left push die and a right push die arranged at the back of the opening side of the curved ring, the left push die and the right push die are provided with contact surfaces in the horizontal direction with the round steel curved ring, the two sides of the opening of the curved ring are respectively provided with a clamp, the two clamps are respectively and electrically connected with the positive electrode and the negative electrode of a power supply, the flash welding machine is also provided with a pushing head for pushing and pressing the two clamps, flashing is carried out on the round steel curved ring, so that the two end surfaces of the round steel curved ring form a high-temperature area, the two end surfaces form flash burning loss, then the pushing head presses the two clamps, the left push die and the right push die continue to horizontally push and press the round steel curved ring, so that the end parts quickly, continuously increasing the pressure of the left push die and the right push die to form upsetting force, keeping the upsetting force for 20-30s, and turning off a power supply after the combination is finished to finish the final flash welding;
step 6), deburring: removing burrs and burrs around the welding joint by using a burr removing device, and taking care that leftover materials cannot fall into a welding gap when the burrs are removed;
step 7), gear pressing: pressing the crosspiece into the middle position of the chain ring, wherein the crosspiece is matched with the chain ring;
preferably, the fixed block is hemispherical, and the diameter of the fixed block is equal to the inner diameter of the left clamping groove and the right clamping groove formed in the left connector and the right connector.
(III) advantageous effects
Compared with the prior art, the invention provides a production process of an anchor chain for a marine vessel, which has the following beneficial effects:
the production process of the anchor chain for the sea vessel comprises the steps of respectively arranging the left shallow groove, the left clamping groove, the right shallow groove and the right clamping groove on the left connector and the right connector of the round steel curved ring before flash butt welding of the round steel curved ring, clamping the fixed shallow beam prepared in advance and the fixed block at the bottom of the fixed shallow beam into the left shallow groove, the left clamping groove, the right shallow groove and the right clamping groove, and finally welding and forming the whole anchor chain through flash butt welding, so that the stability of the rigid structure of the round steel curved ring can be effectively ensured, the stability of the round steel curved ring can be ensured through the clamping effect of the structure and the clamping groove, the last effective guarantee can be provided for the round steel curved ring in a limit stretching state, the abnormal state of the round steel curved ring can be conveniently and timely found, because the fixed shallow beam on the round steel curved ring bearing the limit stretching can be firstly broken, after the broken fixed shallow beam is observed, damaged round steel loopers, namely anchor chains, can be timely replaced, and the accident situation caused by serious damage of the round steel loopers is effectively prevented.
Drawings
FIG. 1 is a schematic view of a round steel curved ring structure of the present invention;
FIG. 2 is a schematic diagram of the production of the round steel curved ring of the present invention;
FIG. 3 is a schematic view of a prior art round steel curved ring structure;
fig. 4 is a top view of the round steel bending ring of the present invention.
In the figure: the device comprises a left connector 1, a right connector 2, a bent mandrel 3, a fixed block 4, a fixed shallow beam 5, a mechanical claw 6, a mechanical arm 7, a downward pressing clamp 8, a left pushing die 9, a right pushing die 10, a left shallow groove 11, a left clamping groove 12, a right shallow groove 13 and a right clamping groove 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious 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.
A production process of an anchor chain for a sea ship comprises the following steps:
step 1), preparing materials: the steel for preparing the anchor chain is calmed steel, and the length of the whole round steel of the calmed steel cannot meet the fixed length requirement, so that the length of the whole round steel of the calmed steel must meet the multiple length requirement, namely the total length is equal to the length of two stub bars plus the length of N bars (namely the multiple length) plus the width of N saw gaps, and the sum of the lengths of the two stub bars is controlled to be 40-50 mm;
step 2), casting and forming: pouring the smelted molten killed steel into each fixed mold, reserving a left connector 1 and a right connector 2 for each anchor chain during casting molding, arranging a left shallow groove 11 on each left connector 1, arranging a left clamping groove 12 in each left shallow groove 11, arranging a right shallow groove 13 on each right connector 2, arranging a right clamping groove 14 in each right shallow groove 13, and taking out the anchor chain cooled and molded in the mold for later use after the molten steel is cooled;
step 3), heating: heating the round steel to 860-980 ℃ by adopting an intermediate frequency heating furnace to ensure that the temperature of the core part of the round steel is close to that of the surface;
step 4), bending and butting: the heated round steel is subjected to ring bending on a ring bending machine, a bending mandrel 3 is arranged at two initial positions where the round steel is to be bent, the round steel is firstly bent around the bending mandrel 3 into a U-shaped shape with a horizontal bottom, then two sides of the U-shaped bending mandrel 3 are bent towards the middle, a left connector 1 and a right connector 2 of the round steel are close to each other, when the bottom gap is 1cm, a fixed shallow beam 5 is clamped by a mechanical claw 6 at the bottom of a mechanical arm 7, two fixed blocks 4 are fixedly arranged at the bottom of the fixed shallow beam 5, the diameter of each fixed block 4 is equal to the inner diameters of a left clamping groove 11, a, In the grooves of the right shallow groove 13 and the right clamping groove 14, the round steel is pushed forwards through the left push die 9 and the right push die 10 behind the bent mandrel 3 and the round steel simultaneously when being pressed downwards, so that the bending work of the round steel can be stably carried out, the conditions of abnormity and deformation are avoided, when the minimum gap at the bottom is 2-3mm, and the two end surfaces form a V-shaped opening with the bottom not in contact, the bending is stopped, and a bent ring is formed;
step 5), flash butt welding: preheating a round steel curved ring, keeping the preheating temperature at 840-900 ℃, welding the curved ring by a light-beam welding machine, wherein the flash welding machine is provided with a curved mandrel 3 arranged at the bent part of the round steel curved ring, and is also provided with a left push die 9 and a right push die 10 arranged at the back of the opening side of the curved ring, the left push die 9 and the right push die 10 are provided with contact surfaces in the horizontal direction with the round steel curved ring, the two sides of the opening of the curved ring are respectively provided with a clamp, the two clamps are respectively and electrically connected with the positive pole and the negative pole of a power supply, the flash welding machine is also provided with a pushing head for pushing and pressing the two clamps, flashing is carried out on the round steel curved ring, so that the two end surfaces of the round steel curved ring form a high-temperature area, the two end surfaces form flash burning loss, then the pushing head presses the two clamps, the left push die 9 and the right push die 10 continue to horizontally push and oppositely push the round steel curved ring, so, continuously increasing the pressure of the left push die 9 and the right push die 10 to form an upsetting force, keeping the upsetting force for 20-30s, and turning off a power supply after the combination is finished to finish the final flash welding;
step 6), deburring: removing burrs and burrs around the welding joint by using a burr removing device, and taking care that leftover materials cannot fall into a welding gap when the burrs are removed;
step 7), gear pressing: the crosspiece is pressed into the middle position of the chain ring, and the crosspiece is matched with the chain ring.
The invention has the beneficial effects that: the production process of the anchor chain for the sea ship comprises the steps of respectively arranging the left shallow groove 11, the left clamping groove 12, the right shallow groove 13 and the right clamping groove 14 on the left connector 1 and the right connector 2 of the round steel curved ring before flash butt welding of the round steel curved ring, clamping the pre-prepared fixed shallow beam 5 and the fixed block 4 at the bottom of the fixed shallow beam 5 into the left shallow groove 11, the left clamping groove 12, the right shallow groove 13 and the right clamping groove 14 during bending, and finally welding and forming the whole anchor chain through flash butt welding, so that the stability of the rigid structure of the round steel curved ring can be effectively ensured, the stability of the round steel curved ring can be ensured through the clamping effect of the structure and the clamping grooves, the last effective guarantee can be provided for the round steel curved ring in a state of bearing extreme stretching, the abnormal state of the round steel curved ring can be conveniently found in time, and the fixed shallow beam 5 can be firstly broken on the round steel curved ring bearing extreme stretching, after the fixed shallow beam 5 which is broken by pulling is observed, the damaged round steel curved ring, namely the anchor chain, can be timely replaced, and the accident situation caused by serious damage of the round steel curved ring is effectively prevented.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A production process of an anchor chain for a sea ship is characterized by comprising the following steps:
step 1), preparing materials: the steel for preparing the anchor chain is calmed steel, and the length of the whole round steel of the calmed steel cannot meet the fixed length requirement, so that the length of the whole round steel of the calmed steel must meet the multiple length requirement, namely the total length is equal to the length of two stub bars plus the length of N bars (namely the multiple length) plus the width of N saw gaps, and the sum of the lengths of the two stub bars is controlled to be 40-50 mm;
step 2), casting and forming: pouring the smelted molten steel of the killed steel into each fixed mold, reserving a left connector (1) and a right connector (2) for each anchor chain during casting molding, arranging a left shallow groove (11) on each left connector (1), arranging a left clamping groove (12) in each left shallow groove (11), arranging a right shallow groove (13) on each right connector (2), arranging a right clamping groove (14) in each right shallow groove (13), and taking out the anchor chain which is formed by cooling the interior of the mold for later use after the molten steel is cooled;
step 3), heating: heating the round steel to 860-980 ℃ by adopting an intermediate frequency heating furnace to ensure that the temperature of the core part of the round steel is close to that of the surface;
step 4), bending and butting: the heated round steel is subjected to ring bending on a ring bending machine, a bending mandrel (3) is arranged at two initial positions where the round steel is to be bent, the round steel is firstly bent around the bending mandrel (3) into a U-shaped shape with a horizontal bottom, then two sides of the U-shaped are bent around the bending mandrel (3) towards the middle, so that a left connector (1) and a right connector (2) of the round steel are close to each other, when the bottom gap is 1cm, a fixed shallow beam (5) is clamped through a mechanical claw (6) at the bottom of a mechanical arm (7), two fixed blocks (4) are fixedly arranged at the bottom of the fixed shallow beam (5), downward pressure is applied to the round steel through downward pressing clamps (8) at two sides of the bottom of the mechanical arm (7), and the fixed shallow beam (5) and the fixed blocks (4) are embedded into grooves of a left shallow groove (11), a left clamping groove (12), a right shallow groove (13) and a right clamping groove (14) in the left connector (1) and the right connector (2) while downward pressure is, the round steel bending ring is pushed forwards through the bending mandrel (3) and a left push die (9) and a right push die (10) behind the round steel simultaneously when the round steel is pressed downwards, so that the round steel can be stably bent, the conditions of abnormity and deformation are avoided, and when the minimum gap at the bottom is 2-3mm, the bending is stopped when two end faces form a V-shaped opening with the bottom not in contact, so that the round steel bending ring is formed;
step 5), flash butt welding: preheating a round steel curved ring, keeping the preheating temperature at 840-900 ℃, welding the curved ring by a light-beam welding machine, wherein the flash welding machine is provided with a bending shaft (3) arranged at the bending part of the round steel curved ring, and is also provided with a left push die (9) and a right push die (10) which are arranged at the back of the opening side of the curved ring, the left push die (9) and the right push die (10) are provided with contact surfaces in the horizontal direction with the round steel curved ring, two clamps are respectively arranged at two sides of the opening of the curved ring, the two clamps are respectively and electrically connected with the positive electrode and the negative electrode of a power supply, the flash welding machine is also provided with a push head for pushing the two clamps, flashing is carried out on the round steel curved ring, so that two end surfaces of the round steel curved ring form a high-temperature area, flash burning loss is formed on the two end surfaces, then the push head presses the two clamps, the left push die (9) and the right push die (10) continue to horizontally push and push, then removing the pressure of the pushing head, continuously increasing the pressure of the left pushing die (9) and the right pushing die (10) to form upsetting force, keeping the upsetting force for 20-30s, turning off a power supply after the combination is finished, and finishing the final flash welding;
step 6), deburring: and (3) removing burrs and burrs around the welding joint by using a burr removing device, and paying attention to the fact that leftover materials cannot fall into a welding gap when the burrs are removed.
Step 7), gear pressing: the crosspiece is pressed into the middle position of the chain ring, and the crosspiece is matched with the chain ring.
2. The production process of the anchor chain for the marine vessel as claimed in claim 1, wherein the fixing block (4) is hemispherical, and the diameter of the fixing block (4) is equal to the inner diameter of the left slot (12) and the right slot (14) formed on the left connector (1) and the right connector (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911148113.5A CN110712014A (en) | 2019-11-21 | 2019-11-21 | Production process of anchor chain for sea ship |
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| CN201911148113.5A CN110712014A (en) | 2019-11-21 | 2019-11-21 | Production process of anchor chain for sea ship |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112605511A (en) * | 2020-11-05 | 2021-04-06 | 江苏亚星锚链股份有限公司 | Flash welding method for low-magnetic-steel anchor chain |
| CN112623114A (en) * | 2020-12-08 | 2021-04-09 | 江苏亚星锚链股份有限公司 | Improved austenitic steel anchor chain and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605511A (en) * | 2020-11-05 | 2021-04-06 | 江苏亚星锚链股份有限公司 | Flash welding method for low-magnetic-steel anchor chain |
| CN112623114A (en) * | 2020-12-08 | 2021-04-09 | 江苏亚星锚链股份有限公司 | Improved austenitic steel anchor chain and manufacturing method thereof |
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