A method for manufacturing a slender shaft rotor forging
A technology for a rotor forging and a manufacturing method, which is applied to the manufacturing field of slender shaft rotor forgings, can solve the problems of ultrasonic flaw detection, low qualified rate of mechanical properties and strength uniformity indicators, and achieves light forging cracks and folding damage and good surface quality. , to ensure the effect of purity
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Embodiment 1
[0040] This embodiment provides a method of manufacturing an elongated shaft rotor forging, such as Figures 1 to 7 As shown, including the following steps:
[0041] Step 1, when the first fire, the ingot 1 performs KD method pre-elimination length and the water outlet pressure jaw processing;
[0042] In step 1, the KD method is pre-extracted, the steel ingot end 2 is directly pressed into the blade of the jaws, and the amount of resection of the steel ingot terminal 2 can be effectively controlled, and due to the water port end forging jaw, upset under pressure Avoid a water port dules with poor metallurgical quality to participate in deformation or enter the forgings body, ensuring the purity of the forging blank body, can effectively improve the qualification rate of the forgings ultrasonic flaw detection.
[0043] Step 2, the second fire is processed and the ingot 1 blank in step 1 is processed and the kd method is processed;
[0044] Step 3, the third fire is pulled out of th...
Embodiment 2
[0059] In this embodiment, a 600 mW coal camera rotor forging is used, which is 1400 mm in diameter of 1400 mm, a total length of 15,000 mm, and a forging method of the elongated shaft rotor forging, which is used in Example 1. step:
[0060] Step 1, the first fire: the ingot 1 is prepared for the KD method, pre-depth long forging ratio is 1.6, the pressure rate of each anvil is ≥ 20%; the water outlet pressure pressure forging pliers, the weight of the material 10% of the ingot, L / D = 2.3 after the following materials, remove the entire rushing and water port.
[0061] Step 2, the second fire, the blank is integrally upset, the upset ratio is 2.2; the KD is unveiled, the long forging ratio is 4, the pressure rate of each anvil is ≥ 20%; KD method is completely cleaned up and thoroughly cleaned up crack.
[0062] Step 3, the third fire: the blank pulls out the finished product, forging ratio 1.4, and the angvial pressure ratio is about 10% when the sleeve is pulled.
[0063] Ste...
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Abstract
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