A kind of forging method of using arc anvil to forge fan-shaped plate
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A fan-shaped plate and arc technology, which is used in manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc. The effect of good wire, reducing forging allowance and improving workpiece hardness
Active Publication Date: 2022-03-15
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 forging method for forging a fan-shaped plate by using a circular-arc anvil, which belongs to the field of material processing. In order to solve the problem 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 using an arc anvil, which includes: putting the steel ingot into a gas heating furnace for heating, heating After reaching a certain temperature and keeping it warm for a period of time to make the temperature of the steel ingot uniform; the steel ingot is pressed against the jaws, chamfered, and the tail of the ingot is removed, returned to the furnace for heating, and upsetting is performed on the upsetting platform; The final steel ingot is drawn and lengthened; according to the process requirements, arc anvils and arc anvils are used for forging to finally forge finished products; the obtained forged products are machined to obtain fan-shaped plate products. Applying it to the production of fan-shaped plates can improve the internal quality of the product, increase the hardness of the workpiece, simplify the operation, protect the equipment, reduce the weight of the forging blank process, reduce the manufacturing cost, and achieve the effect of mass production.
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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