Production process of aluminum alloy gutter profile

Abstract

The invention provides a production process of an aluminum alloy gutter profile, and belongs to the technical field of aluminum alloy profile production. The production process comprises an ingot casting procedure, an extrusion forming procedure, a quenching treatment procedure, a stretching and straightening procedure and an aging treatment procedure which are sequentially carried out, wherein a preliminary heat treatment procedure is added between the ingot casting procedure and the extrusion forming procedure, and the preliminary heat treatment procedure comprises the following steps that a blank formed after the ingot casting procedure is heated to 610-630 DEG C, then the temperature is reduced to 585 + / - 5 DEG C, the heat preservation is carried out for 2.5-3.5 hours, and finally, the blank is rapidly cooled to the room temperature. According to the production process, after a bar material is formed in the ingot casting procedure, the bar material is subjected to the preliminary heat treatment procedure, so that the intracrystalline segregation can be eliminated or reduced, the thermal deformation and cold deformation capacity of the material is improved, the mechanical property of a product is improved, and the internal stress generated during solidification is eliminated.

Description

technical field

[0001] The invention relates to the technical field of production of aluminum alloy profiles, in particular to a production process of aluminum alloy gutter profiles. Background technique

[0002] Aluminum alloy gutter profiles are based on industrialized custom-made glass greenhouses. The use of aluminum alloys has the characteristics of low density, high strength, corrosion resistance, energy saving, environmental protection, recyclability and regeneration, and is more "green". The gutter is not only the drainage part of the greenhouse, but also the main load-bearing girder of the greenhouse, and the main part of the greenhouse skeleton connection. The aluminum alloy gutter is the main load-bearing part of the entire greenhouse, and is directly used as a component and related components.

[0003] Due to the hollow structure has good bending resistance, the cross-sectional width is relatively small, the shading surface is small, and it has good heat insulati...

Examples

Embodiment 1

[0015] S1, the ingot casting process, the aluminum ingot is melted and poured into the mold to form a bar

[0016] S2. Preliminary heat treatment process, heating the bar to 580°C, then keeping it warm for 3 hours, and cooling it quickly to 25°C by spraying water mist after it is released from the furnace;

[0017] S3. Extrusion molding process, the bar is extruded through the extruder equipment, the bar is heated to 475°C, the temperature of the extrusion barrel of the extruder is 400°C, the temperature of the forming die is 465°C, and the extrusion speed is controlled at 7m / min;

[0018] S4, stretching and straightening process, the stretching deformation rate is controlled to 1%;

[0019] S5, the quenching process, adopts the online quenching method;

[0020] S6, aging treatment process, heating to 190° C. and holding for 2 hours to obtain the final product.

Embodiment 2

[0022] S1, the ingot casting process, the aluminum ingot is melted and poured into a mold to form a bar;

[0023] S2. Preliminary heat treatment process, heating the bar to 595°C, then keeping it warm for 6 hours, and cooling it quickly to 30°C by spraying water mist after it is released from the furnace;

[0024] S3. Extrusion molding process, the bar is extruded through the extruder equipment, the bar is heated to 495°C, the temperature of the extrusion barrel of the extruder is 420°C, the temperature of the forming die is 485°C, and the extrusion speed is controlled at 8m / min;

[0025] S4, stretching and straightening process, the stretching deformation rate is controlled at 2%;

[0026] S5, the quenching process, adopts the online quenching method;

[0027] S6, the aging treatment process, heating to 200° C. and keeping it warm for 3 hours to obtain the final product.

Embodiment 3

[0029] S1, the ingot casting process, the aluminum ingot is melted and poured into a mold to form a bar;

[0030] S2. Preliminary heat treatment process, heating the bar to 585°C, then keeping it warm for 4 hours, and cooling it quickly to 27°C by spraying water mist after it is released from the furnace;

[0031] S3. Extrusion molding process, the bar is extruded through the extruder equipment, the bar is heated to 485°C, the temperature of the extrusion barrel of the extruder is 410°C, the temperature of the forming die is 475°C, and the extrusion speed is controlled at 8m / min;

[0032] S4, stretching and straightening process, the stretching deformation rate is controlled at 1.5%;

[0033] S5, the quenching process, adopts the online quenching method;

[0034] S6, the aging treatment process, heating to 195° C. and keeping the temperature for 2.5 hours to obtain the final product.

technical field

[0001] The invention relates to the technical field of production of aluminum alloy profiles, in particular to a production process of aluminum alloy gutter profiles. Background technique

[0002] Aluminum alloy gutter profiles are based on industrialized custom-made glass greenhouses. The use of aluminum alloys has the characteristics of low density, high strength, corrosion resistance, energy saving, environmental protection, recyclability and regeneration, and is more "green". The gutter is not only the drainage part of the greenhouse, but also the main load-bearing girder of the greenhouse, and the main part of the greenhouse skeleton connection. The aluminum alloy gutter is the main load-bearing part of the entire greenhouse, and is directly used as a component and related components.

[0003] Due to the hollow structure has good bending resistance, the cross-sectional width is relatively small, the shading surface is small, and it has good heat insulati...

Examples

Embodiment 1

[0015] S1, the ingot casting process, the aluminum ingot is melted and poured into the mold to form a bar

[0016] S2. Preliminary heat treatment process, heating the bar to 580°C, then keeping it warm for 3 hours, and cooling it quickly to 25°C by spraying water mist after it is released from the furnace;

[0017] S3. Extrusion molding process, the bar is extruded through the extruder equipment, the bar is heated to 475°C, the temperature of the extrusion barrel of the extruder is 400°C, the temperature of the forming die is 465°C, and the extrusion speed is controlled at 7m / min;

[0018] S4, stretching and straightening process, the stretching deformation rate is controlled to 1%;

[0019] S5, the quenching process, adopts the online quenching method;

[0020] S6, aging treatment process, heating to 190° C. and holding for 2 hours to obtain the final product.

Embodiment 2

[0022] S1, the ingot casting process, the aluminum ingot is melted and poured into a mold to form a bar;

[0023] S2. Preliminary heat treatment process, heating the bar to 595°C, then keeping it warm for 6 hours, and cooling it quickly to 30°C by spraying water mist after it is released from the furnace;

[0024] S3. Extrusion molding process, the bar is extruded through the extruder equipment, the bar is heated to 495°C, the temperature of the extrusion barrel of the extruder is 420°C, the temperature of the forming die is 485°C, and the extrusion speed is controlled at 8m / min;

[0025] S4, stretching and straightening process, the stretching deformation rate is controlled at 2%;

[0026] S5, the quenching process, adopts the online quenching method;

[0027] S6, the aging treatment process, heating to 200° C. and keeping it warm for 3 hours to obtain the final product.

Embodiment 3

[0029] S1, the ingot casting process, the aluminum ingot is melted and poured into a mold to form a bar;

[0030] S2. Preliminary heat treatment process, heating the bar to 585°C, then keeping it warm for 4 hours, and cooling it quickly to 27°C by spraying water mist after it is released from the furnace;

[0031] S3. Extrusion molding process, the bar is extruded through the extruder equipment, the bar is heated to 485°C, the temperature of the extrusion barrel of the extruder is 410°C, the temperature of the forming die is 475°C, and the extrusion speed is controlled at 8m / min;

[0032] S4, stretching and straightening process, the stretching deformation rate is controlled at 1.5%;

[0033] S5, the quenching process, adopts the online quenching method;

[0034] S6, the aging treatment process, heating to 195° C. and keeping the temperature for 2.5 hours to obtain the final product.

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