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Connecting flange machining technology
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A technology for connecting flanges and processing technology, applied in the direction of pipes/pipe joints/fittings, damage protection, coatings, etc., can solve the problems of flanges without fire resistance, short service life, simple structure, etc., to improve mechanical properties and corrosion resistance, long service life and stable operation
Inactive Publication Date: 2018-05-08
SUZHOU HAOYAN PRECISION MOLD CO LTD
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Abstract
Description
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[0003] The valve is a control component in the fluid conveying system, which has functions such as cut-off, adjustment, flow diversion, prevention of reverse flow, pressure stabilization, flow diversion or overflow pressure relief; the application of flanges in valves is relatively common, usually used to connect the inlet of the valve And export, the current valve flange does not have fire resistance, simple structure, short service life
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Embodiment 1
[0020] The processing technology of the connection flange of the present embodiment comprises the following steps:
[0021] (1) Ingredients: The mass percentage of each component in the connecting flange is: C: 0.02%, Al: 3.12%, Zn: 2.15%, Mn: 0.82%, Cr: 0.01%, Ni: 0.01%, Cu: 1.23 %, Mo: 0.01%, Pd: 0.15%, Pt: 0.06%, Nd: 0.02%, Ce: 0.02%, Eu: 0.11%, Lu: 0.02%, Ag: 0.33%, Ga: 0.01%, Sn: 0.35 %, Zr: 0.02%, Re: 0.02%, Bi: 0.01%, and the balance is Fe;
[0022] (2) Shell mold preparation: make a shell mold consistent with the shape of the connecting flange;
[0023] (3) pouring: smelting the raw materials in step (1), pouring into the shell mold after obtaining the alloy solution, after pouring and molding, wait for the casting to cool to room temperature, carry out demoulding of the broken mold shell, and then cut off the insulation riser of the casting to obtain the casting;
[0030] The processing technology of the connection flange of the present embodiment comprises the following steps:
[0031] (1) Ingredients: The mass percentage of each component in the connecting flange is: C: 0.03%, Al: 4.55%, Zn: 2.57%, Mn: 1.35%, Cr: 0.03%, Ni: 0.04%, Cu: 1.46% , Mo: 0.02%, Pd: 0.22%, Pt: 0.08%, Nd: 0.04%, Ce: 0.05%, Eu: 0.12%, Lu: 0.06%, Ag: 0.56%, Ga: 0.03%, Sn: 0.44% , Zr: 0.05%, Re: 0.05%, Bi: 0.04%, and the balance is Fe;
[0032] (2) Shell mold preparation: make a shell mold consistent with the shape of the connecting flange;
[0033] (3) pouring: smelting the raw materials in step (1), pouring into the shell mold after obtaining the alloy solution, after pouring and molding, wait for the casting to cool to room temperature, carry out demoulding of the broken mold shell, and then cut off the insulation riser of the casting to obtain the casting;
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Abstract
The invention relates to a connecting flangemachining technology, and belongs to the technical field of valve equipment. The machining technology comprises the steps that firstly, burdening is conducted; secondly, shell die preparing is conducted; thirdly, pouring is conducted; fourthly, a casting is ground and polished; fifthly, the surface of the casting is electroplated with a pure-aluminum clad layer; sixthly, the pure-aluminum clad layer is coated with a fireproof coating through an atomization spraying method; and seventhly, the non-usage face of the casting is wrapped by an irradiationcrosslinking polyolefin material protection layer with high inflaming retarding performance. A connecting flange cast through components according to the mass percent has the beneficial effects of being resistant to corrosion and high temperature, high in strength and long in service life.
Description
technical field [0001] The invention relates to a processing technology for connecting flanges, belonging to the technical field of pipeline connections. Background technique [0002] Flanges are also called flanges or flanges, which are parts that connect pipes to pipes and are connected to pipe ends. There are holes on the flange, and bolts can be worn. It usually refers to opening several holes for fixing on the periphery of a disc-like metal body for connecting other things. The existing flange connection is to fix two pipelines, pipe fittings or equipment respectively on a flange plate first, add flange pads between the two flange plates, and fasten them together with bolts to complete the connection. Flange connection is an important connection method in pipeline construction. Flange connection is easy to use and can withstand high pressure. In industrial pipelines, flange connection is widely used. [0003] The valve is a control component in the fluid delivery syst...
Claims
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Application Information
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