Aluminum profile graded-speed extrusion process
An extrusion process and technology of aluminum profiles, applied in the field of aluminum profile segmented speed extrusion process, can solve the problems of changes starting to appear again, poor head and tail dimensions, and high breakthrough pressure, achieving convenient operation, overcoming unavoidable gaps, and technology. The effect of simple process flow
Active Publication Date: 2015-03-11
CIXI YIMEIJIA ALUMINUM CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] General extruders have the functions of constant speed and segment speed for product selection and use. Although constant speed extrusion can keep the outlet temperature and speed basically the same under certain conditions, check and compare the extruded products when using constant speed. The size change of the head, middle, and tail of the product will show a difference of 0.1mm to 0.4mm compared to the head and tail. This is because the breakthrough pressure at the beginning of constant-speed extrusion is high, and the mold is working outwards under high pressure. Due to the oblique opening, when the pressure gradually drops, the mold working belt returns to normal conditions and the dimensions are stable, but when the metal flow at the end of the extrusion is turbulent and the metal supply is insufficient, the dimensional changes begin to appear again, so the constant speed extrusion There is a defect that the extruded product has a difference in the size of the head and the tail
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0015] The staged speed extrusion process of aluminum profiles includes the following steps,
[0016] 1) The first low-speed extrusion:
[0017] Set the extrusion speed to 3.0mm / s, press into the aluminum ingot, and start the molding;
[0018] 2) Constant speed pressurization in the middle section:
[0019] When the profile extruded by step 1) reaches 3000mm, set the speed of the extruder to 3.5mm / s, and extrude at a constant speed;
[0020] 3) High-speed extrusion at the end
[0021] When the profile extruded by step 2) is more than 3000mm away from the discharge end, set the extrusion speed to 3.8mm / s, and extrude until all the profiles are extruded.
[0022] The present invention includes but is not limited to the above-mentioned embodiments, and any product conforming to the description of the claims falls within the protection scope of the present invention.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an aluminum profile graded-speed extrusion process. The general extruder has the functions of constant speed and variable speed which are selected by the production of a product, wherein the constant-speed extrusion can guarantee the basic consistency of the outlet temperature and the speed under certain condition, but the head and the tail have a difference of 0.1mm-0.4mm when the size changes at the heat part, the middle part and the tail part of the product extruded in the constant speed are checked and compared. The aluminum profile graded-speed extrusion process comprises the following steps: (1) a first-section low-speed extrusion; (2) the middle-section constant speed pressurizing; (3) the tail-section high-speed extrusion. The aluminum profile graded-speed extrusion process provided by the invention is simple in process flow, and convenient to specifically operate, overcomes the defects that the sizes at the head and the tail of the product extruded in the traditional constant speed have irreversible difference, and is widely suitable for the extrusion of various aluminum profile.
Description
technical field [0001] The invention relates to a segmental speed extrusion process of aluminum profiles. Background technique [0002] General extruders have the functions of constant speed and segment speed for product selection and use. Although constant speed extrusion can keep the outlet temperature and speed basically the same under certain conditions, check and compare the extruded products when using constant speed. The size change of the head, middle, and tail of the product will show a difference of 0.1mm to 0.4mm compared to the head and tail. This is because the breakthrough pressure at the beginning of constant-speed extrusion is high, and the mold is working outwards under high pressure. Due to the oblique opening, when the pressure gradually drops, the mold working belt returns to normal conditions and the dimensions are stable, but when the metal flow at the end of the extrusion is turbulent and the metal supply is insufficient, the dimensional changes begin ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/02
Inventor 罗其达
Owner CIXI YIMEIJIA ALUMINUM CO LTD