Method for forging sector plate by use of arc anvil
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A fan-shaped plate and circular arc technology, which is applied in the direction of manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc., can solve the problems of large forging allowance and difficult operation of flat anvils, and achieve metal flow Good line, reduce forging allowance, improve the effect of workpiece hardness
Active Publication Date: 2020-05-19
建龙北满特殊钢有限责任公司
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[0003] In order to solve the problems that the existing flat anvil forging method is difficult to operate and the forging allowance of the flat anvil is large, the present invention provides a forging method for forging a fan-shaped plate by using a circular-arc anvil
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Embodiment 1
[0032] In this embodiment, the forging method of 2Cr12NiMoWVE fan-shaped plate is taken as an example. A 30MN hydraulic press is used for forging, and the weight of the steel ingot is 4.99 tons. Half-die forging of the arc anvil and anvil → finishing each part to the finished product size → flaw detection → sampling → heat treatment → inspection of performance.
[0033] Example 1
[0034] The specific forging method steps are as follows:
[0035] Step 1. Put the steel ingot into a gas heating furnace and heat it. The heating temperature is 1180°C, the holding time is 8 hours, and the temperature of the steel ingot is uniform;
[0036] Step 2: Press the steel ingot into the jaws, chamfer the edge, remove the tail of the ingot, return to the furnace for heating, and the heating temperature is 1180°C;
[0037] Step 3. Use the upsetting platform for upsetting, upsetting to φ1000mm, and the upsetting ratio is 1.5;
[0038] Step 4. Use the upper flat and lower V-shaped anvils to ...
Embodiment 2
[0043] The specific forging method steps are as follows:
[0044] Steps 1 to 3 are the same as in Example 1. Steps 4 and 5 are the same as in Example 1 except that the single reduction is 130 mm. Step 6 is the same as in Example 1.
[0045] Take 200mm samples longitudinally at both ends of the obtained fan-shaped plate, respectively, and conduct flaw detection and mechanical performance testing. The results are shown in Table 1.
Embodiment 3
[0047] Steps 1 to 3 are the same as in Example 1. Steps 4 and 5 are the same as in Example 1 except that the single reduction is 150 mm. Step 6 is the same as in Example 1.
[0048] Take 200mm samples longitudinally at both ends of the obtained fan-shaped plate, respectively, and conduct flaw detection and mechanical performance testing. The results are shown in Table 1.
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Abstract
The invention relates to a method for forging a sector plate by use of an arc anvil, belongs to the field of material machining and aims to solve the problems that existing flat anvil forging methodsare difficult to operate and forging allowance of a flat anvil is large. The method for forging the sector plate by use of the arc anvil comprises steps as follows: a steel ingot is put into a gas heating furnace to be heated to certain temperature and kept at the temperature for a period of time, so that the temperature of the steel ingot is uniform; the steel ingot is subjected to jaw pressing,chamfering and ingot tail removal and returned to the furnace to be heated, and upsetting is performed by an upsetting platform; the upset steel ingot is elongated by the anvil with an upper flat partand a lower V-shaped part; the steel ingot is forged by an arc anvil bed and the arc anvil according to technological requirements, and a finished product is finally forged; and the forged finished product is machined, and a finished product, namely, the vector plate, is obtained. The method is applied to production of the vector plate, the inherent quality of the product can be improved, the hardness of a workpiece is improved, operation is simple, equipment is protected, process weight of a blank of a forge is reduced, the manufacturing cost is reduced, and the batch production effect is realized.
Description
technical field [0001] The invention belongs to the field of material processing, and in particular relates to a forging method for forging a fan-shaped plate by using a circular-arc anvil. Background technique [0002] The fan-shaped plate is the key part of the coiler, which not only bears the alternating compound forces of tension, compression, shearing, bending, torsion, etc., but also directly contacts the strip steel, which directly affects the quality of the strip steel coiling, so the fan-shaped plate The quality of plate forgings plays a vital role in the performance of the product. At present, the production technology plan of domestic fan-shaped plate forgings is to use steel ingots for heating, normalizing and annealing after forging. Among them, the forging process of the fan-shaped plate adopts steel ingot forging. The first fire presses the jaws, removes the bottom of the ingot, and upsetting; the second fire draws and grows into a square for blanking; the th...
Claims
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