Method for fabricating rotary drum
Technical field
The present invention relates to a kind of rotary drum technology field of centrifuge.
Background technology
The manufacture craft of existing bowl has forging and steel plate to weld two kinds, the raising that requires along with the separative efficiency of centrifuge, the roller diameter that needs is also increasing, the rotary drum that forging and steel plate welding procedure obtain is along with the increase of diameter, intensity does not reach the production requirement that needs, therefore, existing process method has limited the maximum gauge of rotary drum, thereby has limited the separative efficiency and the output of centrifuge.In addition, adopt Forging Technology to make rotary drum, big after forging to the machined difficulty of rotary drum; Adopt the steel plate welding procedure to make rotary drum, have the drawback that the commissure can not perforate.
Summary of the invention
Based on above-mentioned need of practice, the technical problem that the present invention solves is: a kind of defective workmanship of forging and welding that overcome is provided, can makes the larger diameter rotary drum, the rotary drum monolithic molding is good simultaneously, internal organizational structure is fine and closely woven, and deflection is little, the method for fabricating rotary drum of good stability.
Technical scheme of the present invention is: a kind of method for fabricating rotary drum comprises following processing step:
A, employing two phase stainless steel material spun casting hollow cylinder, the rotary drum blank forming;
B, preliminary working, with the inside and outside round car circle of rotary drum blank, the section car is flat;
C, roughing, the rotary drum blank is rough turn, made allowance, being cut to by the single-piece size needs length;
D, heat treatment are carried out solid solution and average tempering with the rotary drum blank;
E, semifinishing, with rotary drum blank half finish turning to the needs size;
F, heat treatment are carried out average tempering with the rotary drum blank; To eliminate stress;
G, semifinishing, with rotary drum blank half finish turning behind the average tempering to the needs size;
H, boring are pressed the designing requirement perforate to rotary drum;
I, heat treatment are carried out lonneal to the rotary drum after the perforate;
J, fine finishining are processed into design size with rotary drum;
K, surface treatment are carried out deburring, surface acid-washing, polishing with rotary drum.
The present invention carries out dynamic balance running to rotary drum again after described rotary drum carries out surface treatment, remove amount of unbalance.
The present invention adopts new two phase stainless steel material to carry out spun casting and makes the rotary drum blank, has not only overcome the defective workmanship of forging and welding, but also has possessed the requirement of strength of rotary drum.
The invention has the beneficial effects as follows: manufacture difficulty is low, and the rotary drum monolithic molding of making is good, the internal organizational structure densification, and deflection is little, and good stability.
The present invention is further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing is the process chart of the preferred embodiment of the present invention.
The specific embodiment
Preferred embodiment is as follows:
As shown in drawings, a kind of method for fabricating rotary drum comprises following processing step:
A, employing two phase stainless steel spun casting hollow cylinder, the rotary drum blank forming;
B, preliminary working, with the inside and outside round car circle of rotary drum blank, the section car is flat;
C, roughing, the rotary drum blank is rough turn, made allowance, being cut to by the single-piece size needs length;
D, heat treatment are carried out solid solution and average tempering with the rotary drum blank;
E, semifinishing, with rotary drum blank half finish turning to the needs size;
F, heat treatment are carried out average tempering with the rotary drum blank, to eliminate stress;
G, semifinishing, with rotary drum blank half finish turning behind the average tempering to the needs size;
H, boring are pressed the designing requirement perforate to rotary drum;
I, heat treatment are carried out lonneal to the rotary drum after the perforate;
J, fine finishining are processed into design size with rotary drum;
K, surface treatment are carried out deburring, surface acid-washing, polishing with rotary drum.
L, at last rotary drum is carried out dynamic balance running, remove amount of unbalance.