Method for producing fire-fighting sprinkler head frame through semi-solid forming of brasses

A semi-solid forming and semi-solid technology, which is applied in the field of metal semi-solid forming, can solve the problems of low product strength and pass rate, high energy consumption, and inability to cast continuously, and achieve less casting voids, low energy consumption, and continuous casting speed high effect

Inactive Publication Date: 2015-06-24
JINGGANGSHAN YUJIE FIRE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production of fire sprinklers usually adopts traditional casting technology. Therefore, the metal needs to be melted twice, the energy consumption is large, and continuous casting is not possible. At the same time, the product strength and pass rate are lower than those produced by semi-solid forming technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, the method for brass semi-solid molding production fire-fighting sprinkler frame, its method and steps are:

[0016] (1) Selection of brass raw materials: the composition contains 57.5% copper, 0% iron, 2% lead, and 0% impurities;

[0017] (2) Add the raw materials to the melting furnace for heating, control the heating temperature at 886°C, and the air pressure at 100KPa to make a liquid slurry;

[0018] (3) Store the prepared slurry in an insulated manner, and at the same time control part of the slurry for transportation, and also carry out temperature control in the transportation pipeline;

[0019] (4) The slurry is transported to the casting preparation room for semi-solid temperature control and one-time pouring control of the slurry;

[0020] (5) Stress relief treatment, semi-solid brass is cast and formed in the fire sprinkler frame mold;

[0021] (6) Cooling of formed parts;

[0022] (7) Finishing to make finished products.

Embodiment 2

[0023] Embodiment 2, the method for brass semi-solid molding production fire-fighting sprinkler frame, its method and steps are:

[0024] (1) Brass raw material selection: the copper content in the composition is 59.5%, the iron content is 0.50%, the lead content is 3%, and the sum of impurities is 1.2%;

[0025] (2) Put the raw materials into the melting furnace for heating, control the heating temperature at 973°C, and the air pressure at 101KPa to make a liquid slurry;

[0026] (3) Store the prepared slurry in an insulated manner, and at the same time control part of the slurry for transportation, and also carry out temperature control in the transportation pipeline;

[0027] (4) The slurry is transported to the casting preparation room for semi-solid temperature control and one-time pouring control of the slurry;

[0028] (5) Stress relief treatment, semi-solid brass is cast and formed in the fire sprinkler frame mold;

[0029] (6) Cooling of formed parts;

[0030] (7) ...

Embodiment 3

[0031] Embodiment 3, the method for brass semi-solid molding production fire-fighting sprinkler frame, its method and steps are:

[0032] (1) Selection of brass raw materials: the composition contains 58.5% copper, 0.25% iron, 2.5% lead, and 0.6% of impurities;

[0033] (2) Put the raw material into the melting furnace for heating, control the heating temperature at 929°C, and the air pressure at 100.5KPa to make a liquid slurry;

[0034] (3) Store the prepared slurry in an insulated manner, and at the same time control part of the slurry for transportation, and also carry out temperature control in the transportation pipeline;

[0035] (4) The slurry is transported to the casting preparation room for semi-solid temperature control and one-time pouring control of the slurry;

[0036] (5) Stress relief treatment, semi-solid brass is cast and formed in the fire sprinkler frame mold;

[0037] (6) Cooling of formed parts;

[0038] (7) Finishing to make finished products.

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PUM

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Abstract

The invention discloses a method for producing a fire-fighting sprinkler head frame through the semi-solid forming of brasses. The method comprises the following steps: (1) selecting a brass raw material; (2) adding the raw material into a smelting furnace to heat, so that liquid slurry is obtained; (3) carrying out heat-retaining storage on the obtained liquid slurry, and controlling part of the slurry to convey; (4) after the slurry is conveyed to a casting preparation chamber, carrying out semi-solid temperature control on the slurry and controlling the one-time casting amount of the slurry; (5) carrying out stress relieving treatment, and carrying out casting forming on semi-solid brasses in a mold for producing fire-fighting sprinkler head frames; (6) cooling a formed part; and (7) carrying out finish machining on the formed part so as to obtain a finished product. Compared with traditional methods, no secondary heating for melting is required to be performed in the method, therefore, the method is energy-saving and environment-friendly; and according to the invention, parts are formed more rapidly, continuous casting is performed at higher speed, lower energy consumption is produced, the service life of the mold is long, the gas entrapment can be reduced in the process of production, castings have less cavities, and the strength is higher, therefore, the method is of great significance to the production of fire-fighting sprinkler head frames.

Description

technical field [0001] The invention relates to a metal semi-solid forming technology, in particular to a brass semi-solid forming method for producing fire sprinkler head frames. Background technique [0002] Research on high-performance and high-strength copper alloys has always been a hot spot in the field of copper metal research, and it has extremely wide applications in machinery, construction, hardware, electronics, sanitary ware and other industries. Fire sprinklers belong to the category of construction and public safety, and are mainly used in hotels, large public buildings and public places, etc., and are one of the important fire-fighting equipment. Fire sprinkler heads are easy to break, difficult to process, easy to corrode, and consume a lot of energy in production. [0003] At present, the production of fire sprinklers usually adopts traditional casting technology. Therefore, the metal needs to be melted twice, the energy consumption is large, and continuous...

Claims

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Application Information

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IPC IPC(8): C22C9/00B22D17/00
Inventor 林建云肖冬华
Owner JINGGANGSHAN YUJIE FIRE SCI & TECH
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