Efficient machining method of metal screen for centrifugal machine

A technology of metal screen and processing method, which is applied in the field of solid-liquid separation equipment, can solve the problems of inability to process trapezoidal structure and high cost, and achieve the effects of saving raw materials, improving wear resistance and service life, and increasing water permeability

Active Publication Date: 2021-04-16
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot process trapezoidal structures, only thin plates can be processed, and the cost is very high

Method used

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  • Efficient machining method of metal screen for centrifugal machine
  • Efficient machining method of metal screen for centrifugal machine
  • Efficient machining method of metal screen for centrifugal machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The efficient processing method of the metal screen of the present embodiment comprises the following steps:

[0038] 1) Cut the 2205 stainless steel plate with a width of 121mm and a thickness of 3.0mm into steel bars I with a rectangular cross-section according to the width of 5.0mm. The size of the steel bars I is 121mm´5mm´3mm, and straighten the steel bars I.

[0039]2) Align the two ends of the steel bar I, and clamp the two ends of the steel bar I with two sets of clamps, the distance between the two sets of clamps is 100mm. Place the clamped steel bar I on the magnetic chuck of the workpiece table of the grinding machine. After correcting the position and level, the magnetic force is fixed. At this time, the upper and lower sides of the steel bar I are inclined at an angle of 4.6 degrees to the horizontal plane. Start the grinding wheel to grind the top of the steel bar I, the grinding length L2 is 45mm, the unilateral grinding amount of the lower bottom width B...

Embodiment 2

[0044] (1) Cut the 2205 stainless steel plate with a width of 121mm and a thickness of 3.0mm into steel bars I with a rectangular cross-section according to the width of 5.0mm. The size of the steel bars I is 121mm´5mm´3mm, and straighten the steel bars I.

[0045] (2) Align both ends of the steel bar I, and clamp with two sets of clamps, and the distance between the two sets of clamps is 100mm. Then clamped steel bar 1 is placed on the magnetic chuck of the grinding machine workpiece table, after correcting the position and level, the magnetic force is fixed, and now the upper and lower sides of steel bar 1 are inclined at an angle of 4.6 degrees with the horizontal plane. Start the grinding wheel to grind the top of the steel bar I, the grinding length L2 is 45mm, the unilateral grinding amount of the lower bottom width B of the section is 0.08mm, and the unilateral grinding amount of the upper bottom width b of the section is 0.48mm. After the upper surface of steel bar I i...

Embodiment 3

[0050] (1) Cut the 2205 stainless steel plate with a width of 121mm and a thickness of 3.0mm into steel bars I with a rectangular cross-section according to the width of 5.0mm. The size of the steel bars I is 121mm´5mm´3mm, and straighten the steel bars I.

[0051] (2) Align both ends of the steel bar I, and clamp with two sets of clamps, and the distance between the two sets of clamps is 100mm. Then clamped steel bar 1 is placed on the magnetic chuck of the grinding machine workpiece table, after correcting the position and level, the magnetic force is fixed, and now the upper and lower sides of steel bar 1 are inclined at an angle of 5.7 degrees with the horizontal plane. Start the grinding wheel to grind the top of the steel bar I, the grinding length L2 is 45mm, the unilateral grinding amount of the lower bottom width B of the section is 0.06mm, and the unilateral grinding amount of the upper bottom width b of the section is 0.56mm. After the upper surface of steel bar I i...

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Abstract

The invention discloses an efficient machining method of a metal screen for a centrifugal machine. The efficient machining method comprises the following steps that (1) a stainless steel plate is cut into steel bars I with rectangular sections, and the steel bars I are straightened; the steel bars I are machined into steel bars II, the steel bars II are formed by arranging rectangular section sections and trapezoidal section sections at intervals, the rectangular section sections are used for surfacing coatings, and the trapezoidal section sections form linear screen seams; (2) the multiple steel bars II are positioned through a fixing device, so that the two ends of steel bars II are flush, the steel bars are tightly attached, and the upper bottoms of trapezoidal sections of the steel bars II face upwards and are shorter than the lower bottoms; stainless steel coatings are subjected to surface overlaying on the upper surfaces of the rectangular section sections of the steel bars II by using a plasma powder surfacing machine to form a screen blank; (3) the screen blank is machined and bent and formed on a mold, and a finished product is obtained. The efficient machining method of the metal screen for the centrifugal machine has the advantages that operation is convenient, machining efficiency is high, consumption of materials and consumable products and the like can be remarkably reduced, and the problem that the size of gaps smaller than 0.05 mm is difficult to machine is solved.

Description

technical field [0001] The invention belongs to the technical field of solid-liquid separation equipment, and in particular relates to a high-efficiency processing method for a metal screen used in a centrifuge. Background technique [0002] In the industrial production process of chemical industry, mining and metallurgy, waste liquid containing a large amount of slag and organic residue will be produced, which will cause serious pollution to soil and rivers. The centrifuge is a device used for solid-liquid separation of these waste liquids. The bar-shaped metal screen is the key component of the equipment. According to the particle size of the separated material, the screen gap is generally 0.1-0.3mm. In the process of solid-liquid separation, in order to prevent solid particles of different sizes from clogging the sieve gap and facilitate cleaning, the sieve gap is processed into a trapezoidal structure, that is, the inner (working surface) gap is small and the outer gap i...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B23P15/00
Inventor彭成章彭昭玮
OwnerHUNAN UNIV OF SCI & TECH