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Forming method for improving structure property of QAl10-4-4 aluminum bronze alloy cast ingot

A technology for alloy ingots and microstructure properties, applied in furnace types, metal processing equipment, furnaces, etc., can solve the problems of limited forging deformation, coarse grains of ingots, and difficult to improve the structure, and achieve compact processing steps and flaw detection High level, fine grain effect

Active Publication Date: 2021-03-02
SHAANXI HEYE SPECIAL STEEL TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. At present, the diameter of the largest domestically produced ingot bar is Produced by induction power frequency furnace, the ingot grains are coarse, the plasticity is poor, the amount of forging deformation is limited, and the structure is not easy to improve;

Method used

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  • Forming method for improving structure property of QAl10-4-4 aluminum bronze alloy cast ingot
  • Forming method for improving structure property of QAl10-4-4 aluminum bronze alloy cast ingot

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Embodiment

[0037] In this embodiment, the specification of QAl10-4-4 aluminum bronze alloy bar is Ф360mm×750mm:

[0038] The main chemical element content of QAl10-4-4 alloy is shown in Table 1:

[0039] Table 1

[0040]

[0041] To implement the present invention, it is necessary to provide a band sawing machine, a forging furnace, a press, a manipulator, a heat treatment furnace, and testing equipment.

[0042] In this embodiment, the forming method for improving the microstructure and properties of a QAl10-4-4 aluminum bronze alloy ingot includes the following steps: billet forging of the ingot, intermediate process forging, final forging molding, and annealing treatment.

[0043]Ingot billet forging: The QAl10-4-4 aluminum bronze ingot with a size of Ф360mm×750mm is heated before forging by an electric furnace. Set the heating temperature to 890°C, cast the ingot to the warm charging furnace, select the heating coefficient at the set temperature to be 0.6min / mm, and the holding ...

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Abstract

The invention discloses a forming method for improving the structure property of a QAl10-4-4 aluminum bronze alloy cast ingot. According to the technical scheme, a sawn QAl10-4-4 aluminum bronze alloybar is heated to a preset high-temperature interval, heat preservation is conducted, and then cast ingot cogging forging is conducted; a blank obtained after ingot casting cogging is heated to a preset medium-temperature interval, heat preservation is conducted, and then intermediate procedure forging is conducted; a blank obtained after intermediate procedure forging is heated to the preset medium-temperature interval, heat preservation is conducted, and then final forging forming is conducted; and a blank which is finally forged and formed is annealed according to a preset temperature, andafter discharging and air-cooling, a finished product forging is obtained. According to the method, a forging with fine grains, uniform structure, high flaw detection level and good comprehensive performance can be obtained.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a forming method for improving the microstructure and properties of a QAl10-4-4 aluminum bronze alloy ingot. Background technique [0002] QAl10-4-4 aluminum bronze alloy is a kind of high-strength heat-resistant bronze, containing iron and manganese elements, stable mechanical properties at 400 ℃, good anti-friction, good corrosion resistance in the atmosphere, fresh water and sea water , widely used in ships and other fields. Usually the maximum specification of domestic QAl10-4-4 aluminum bronze extruded bar is Preset diameter of bars for small to medium forgings. For large-size forgings, limited by the length of the bar, once the forging ratio that can achieve upsetting is exceeded (ie ≥6, reasonable forging ratio ≤2.5), only ingot bars can be used. [0003] Disadvantages and deficiencies of the prior art: [0004] 1. At present, the largest domes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J1/06B21J5/00C21D1/26C21D9/00
CPCB21J1/06B21J5/002C21D1/26C21D9/00
Inventor 曹玉如张博王世超段文华周大云闫伟宁
Owner SHAANXI HEYE SPECIAL STEEL TOOL
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