CN105522335A - Machining method for large-size stainless steel rotary screen - Google Patents

Abstract

The invention relates to the field of mechanical machining, in particular to a machining method for a large-size stainless steel rotary screen. The machining method for the large-size stainless steel rotary screen comprises the following steps that 1, screen plate leveling is conducted, specifically, a screen plate is made of steel plates of 3 mm thickness and is of high hardness, and after leveling is conducted through a temper mill, the manual leveling process is added, so that the flatness is greatly improved, and the using requirements are basically met; 2, screen plate blanking is conducted, specifically, the rotary screen is uniformly divided into four pieces, blanking is conducted through a laser cutting machine for precisely controlling the size, so that the blanking precision is ensured; choke plug machining is controlled according to the actually-measured diameters of the two ends of the formed rotary screen, and thus assembling matching is ensured; in addition, the structure of a choke core is designed to be provided with a groove, and hence installing is convenient; and 3, screen plate rolling is conducted, specifically, circular arcs are subjected to bath pressure through a bending machine, and the circular arcs of four screen plates R950 are subjected to bath pressure through a R75 circular arc mold on a 500T bending machine; furthermore, the bath pressure effect is improved by adopting the mode of cushioning a rubber in the middle when bath pressurizing is conducted. According to the machining method for the large-size stainless steel rotary screen, the machining process is simple, manufacturing is easy, the machining quality and the size precision of a workpiece can be ensured, the production cost is reduced, and the production efficiency is improved.

Description

Large-size stainless steel cylinder processing method

Technical field

The present invention relates to field of machining, be specifically related to large-size stainless steel cylinder processing method.

Background technology

Stainless steel rotary screen is as one of the parts of cylinder dryer most critical, and the quality of its quality is most important.Along with development and the needs in market, using producer's improving constantly rotary screen drier rotation speed requirements, simultaneously in order to reduce the vibration of dryer when running up, improving drying effect, the accuracy of manufacture improving cylinder is extremely urgent.Cylinder is as crucial piece number, and the every technical parameter after its processing directly affects the overall performance of dryer

In order to improve cylinder linearity, control to beat, silently must select suitable fit clearance with cylinder, and installation difficulty or ease problem silently will be considered.Web plate length exceeds the range of work of the existing furling plate round machine of my company, and be difficult to outside find suitable Juan Yuan producer through investigation, can only buy the three rollers active furling plate round machine meeting length needs and carry out volume circle, or use bending trough pressure circular arc, but roundness, linearity control comparatively difficult.Need after web plate punching to carry out pickling, but existing pickling tube size is inadequate.Cylinder ingredient exceeds argon arc and drops down the welding machine range of work, and manual welding distortion is large, and web plate flattening-out exceeds my company's planisher scope.Existing planisher can only smooth cut deal, and another flattening rolls is the thickest can smooth 3mm carbon steel sheet.And web plate is due to middle pine, and periphery is tight, smoothing difficulty.Add that often to need to add manual smoothing man-hour whole early stage, occur that hammer prints.

Summary of the invention

In order to solve the problem, the invention provides a kind of process simple, be easy to manufacture, and crudy and the dimensional accuracy of workpiece can be ensured, reducing production cost, the large-size stainless steel cylinder processing method of enhancing productivity.

Large-size stainless steel cylinder processing method of the present invention, comprises the following steps:

The first step, web plate is smoothed, and web plate material is the steel plate that 3mm is thick, and hardness is comparatively large, adopts the smooth operation of smooth rear the increases craft of planisher, flatness is had larger improvement, substantially meets instructions for use;

Second step, web plate blanking, is divided into four pieces by cylinder, use laser cutting machine blanking, with precise control of sizes, ensureing cutting stock precision, silently processing according to surveying two ends diameter control after Cylinder mould formation, ensure that assembling coordinates, and vexed core structure is designed to be with groove type, conveniently installs;

3rd step, web plate volume circle, with bending trough pressure circular arc, adopt on 500T bender, with R75 circular arc mould respectively groove press the circular arc of four pieces of web plate R950, and take when groove press middle pad rubber method improve groove press effect;

4th step, web plate pickling, first by web plate groove pressure arc forming on bender, improves after rigidity, then web plate is ridden over pond and wash two respectively along upper;

5th step, web plate ingredient, cylinder splicing welding joint uses manual argon arc welding, every block web plate unfitness of butt joint is conscientiously revised suitable, reconditioning web plate cutting edge oxide skin, two welding simultaneously during welding before processing staff welds, reduce welding deformation as far as possible, postwelding rubbing down welding bead is smooth, loads onto two and silently holds round, to model correction roundness.

Process of the present invention is simple, is easy to manufacture, and can ensure crudy and the dimensional accuracy of workpiece, reduces production cost, enhances productivity.

Detailed description of the invention

Large-size stainless steel cylinder processing method of the present invention, is characterized in that, comprise the following steps:

The first step, web plate is smoothed, and web plate material is the steel plate that 3mm is thick, and hardness is comparatively large, adopts the smooth operation of smooth rear the increases craft of planisher, flatness is had larger improvement, substantially meets instructions for use;

Second step, web plate blanking, is divided into four pieces by cylinder, use laser cutting machine blanking, with precise control of sizes, ensureing cutting stock precision, silently processing according to surveying two ends diameter control after Cylinder mould formation, ensure that assembling coordinates, and vexed core structure is designed to be with groove type, conveniently installs;

3rd step, web plate volume circle, with bending trough pressure circular arc, adopt on 500T bender, with R75 circular arc mould respectively groove press the circular arc of four pieces of web plate R950, and take when groove press middle pad rubber method improve groove press effect;

4th step, web plate pickling, first by web plate groove pressure arc forming on bender, improves after rigidity, then web plate is ridden over pond and wash two respectively along upper;

5th step, web plate ingredient, cylinder splicing welding joint uses manual argon arc welding, every block web plate unfitness of butt joint is conscientiously revised suitable, reconditioning web plate cutting edge oxide skin, two welding simultaneously during welding before processing staff welds, reduce welding deformation as far as possible, postwelding rubbing down welding bead is smooth, loads onto two and silently holds round, to model correction roundness.

Process of the present invention is simple, is easy to manufacture, and can ensure crudy and the dimensional accuracy of workpiece, reduces production cost, enhances productivity.

Claims (1)

1. a large-size stainless steel cylinder processing method, is characterized in that, comprises the following steps:

The first step, web plate is smoothed, and web plate material is the steel plate that 3mm is thick, and hardness is comparatively large, adopts the smooth operation of smooth rear the increases craft of planisher, flatness is had larger improvement, substantially meets instructions for use;

Second step, web plate blanking, is divided into four pieces by cylinder, use laser cutting machine blanking, with precise control of sizes, ensureing cutting stock precision, silently processing according to surveying two ends diameter control after Cylinder mould formation, ensure that assembling coordinates, and vexed core structure is designed to be with groove type, conveniently installs;

3rd step, web plate volume circle, with bending trough pressure circular arc, adopt on 500T bender, with R75 circular arc mould respectively groove press the circular arc of four pieces of web plate R950, and take when groove press middle pad rubber method improve groove press effect;

4th step, web plate pickling, first by web plate groove pressure arc forming on bender, improves after rigidity, then web plate is ridden over pond and wash two respectively along upper;

5th step, web plate ingredient, cylinder splicing welding joint uses manual argon arc welding, every block web plate unfitness of butt joint is conscientiously revised suitable, reconditioning web plate cutting edge oxide skin, two welding simultaneously during welding before processing staff welds, reduce welding deformation as far as possible, postwelding rubbing down welding bead is smooth, loads onto two and silently holds round, to model correction roundness.