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Anchoring flange and manufacturing process thereof

An anchoring flange and anchoring technology, applied in the direction of flange connection, pipe/pipe joint/pipe fitting, passing element, etc. Advanced problems, to achieve the effect of obvious defect reduction, grain refinement, and uniform structure refinement

Active Publication Date: 2015-02-04
WUXI HUAERTAI MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The anchor flange not only requires good tensile strength, high yield strength, small surface roughness, but also requires strong corrosion resistance; and in the prior art, due to the limitation of composition and heat treatment process, the tensile strength of the flange The strength is not high, the yield strength is not high, the surface roughness is high, and there are problems such as loose tissue, pores, trachoma, etc., the corrosion resistance is not high, it does not meet the requirements of the anchor flange, or the service life is short

Method used

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  • Anchoring flange and manufacturing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The anchoring flange of this embodiment, the mass percent of its chemical composition is: C: 0.25%, Si: 0.35%, Mn: 0.55%, Ni: 3%, Cr: 9%, Nb: 0.35%, Cu: 0.55% , N: 0.08%, Mo: 0.09%, Al: 0.6%, S: 0.06%, Ti: 0.05%, V: 0.07%, B: 0.005%, lanthanide rare earth: 9%, and the balance is Fe; The mass percentages of lanthanide rare earth components are: lanthanum: 16%, cerium: 34%, samarium: 11%, neodymium: 6%, gadolinium: 14%, praseodymium: 5%, dysprosium: 11%, and other lanthanide elements: 3%.

[0028] The manufacturing process of the anchor flange in this embodiment is carried out according to the following procedures: billet blanking-forging-forging size and surface inspection-heat treatment-mechanical rough machining-ultrasonic inspection-mechanical performance test-mechanical finishing to the required shape and size- Clean coating; Among them, billet blanking, forging, forging size and surface inspection, mechanical rough machining, ultrasonic inspection, mechanical perfo...

Embodiment 2

[0035] The anchoring flange of this embodiment has the mass percentage of its chemical composition: C: 0.35%, Si: 0.45%, Mn: 0.35%, Ni: 2%, Cr: 8%, Nb: 0.55%, Cu: 0.75% , N: 0.09%, Mo: 0.11%, Al: 0.4%, S: 0.04%, Ti: 0.06%, V: 0.05%, B: 0.007%, lanthanide rare earth: 12%, and the balance is Fe; The mass percentages of lanthanide rare earth components are: lanthanum: 19%, cerium: 28%, samarium: 12%, neodymium: 8%, gadolinium: 13%, praseodymium: 5%, dysprosium: 11%, and other lanthanide elements: 4%.

[0036] The manufacturing process of the anchor flange in this embodiment is carried out according to the following procedures: billet blanking-forging-forging size and surface inspection-heat treatment-mechanical rough machining-ultrasonic inspection-mechanical performance test-mechanical finishing to the required shape and size- Clean coating; Among them, billet blanking, forging, forging size and surface inspection, mechanical rough machining, ultrasonic inspection, mechanical p...

Embodiment 3

[0043] The anchoring flange of this embodiment, the mass percent of its chemical composition is: C: 0.30%, Si: 0.40%, Mn: 0.45%, Ni: 4%, Cr: 7%, Nb: 0.45%, Cu: 0.65% , N: 0.08%, Mo: 0.10%, Al: 0.5%, S: 0.05%, Ti: 0.07%, V: 0.06%, B: 0.006%, lanthanide rare earth: 10%, and the balance is Fe; The mass percentages of lanthanide rare earth components are: lanthanum: 16%, cerium: 20%, samarium: 13%, neodymium: 9%, gadolinium: 15%, praseodymium: 9%, dysprosium: 13%, and other lanthanide elements: 5%.

[0044] The manufacturing process of the anchor flange in this embodiment is carried out according to the following procedures: billet blanking-forging-forging size and surface inspection-heat treatment-mechanical rough machining-ultrasonic inspection-mechanical performance test-mechanical finishing to the required shape and size- Clean coating; Among them, billet blanking, forging, forging size and surface inspection, mechanical rough machining, ultrasonic inspection, mechanical perf...

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Abstract

The invention discloses an anchoring flange and a manufacturing process thereof. The anchoring flange comprises the following chemical components: 0.25-0.35% of C, 0.35-0.45% of Si, 0.35-0.55% of Mn, 2-4% of Ni, 7-9% of Cr, 0.35-0.55% of Nb, 0.55-0.75% of Cu, 0.08-0.09% of N, 0.09-0.11% of Mo, 0.4-0.6% of Al, 0.04-0.06% of S, 0.05-0.07% of Ti, 0.05-0.07% of V, 0.005-0.007% of B, 9-12% of lanthanide rare earth and the balance of Fe. By a heat treatment procedure of twice normalizing plus once tempering and plus cooling, after twice normalizing, the banded structure of the flange and other defects are significantly reduced, the structure is thinned and uniform, and the tensile strength, the yield strength, the toughness and the low-temperature impact performance are greatly improved.

Description

technical field [0001] The invention relates to a flange and a manufacturing process, in particular to an anchor flange and a manufacturing process thereof. Background technique [0002] Flange is otherwise known as flange or flange. Flanges are parts that connect the pipes to each other and are connected to the pipe ends; they are also useful for flanges on equipment inlets and outlets, And can be used as connection between two equipments, example reducer flanges. Flange connection or flange joint refers to the detachable connection of flange, gasket and bolt as a group of combined sealing structure. Pipe flange refers to the flange used for piping in pipeline installations. Upper refers to the inlet and outlet flanges of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanges are divided into threaded (screw connection) flanges, welding flanges and clip flanges. [0003] Flange materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/54F16L23/00
Inventor 李忠云
Owner WUXI HUAERTAI MACHINERY MFG
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