CN104858614A - Manufacturing method for part of aluminum alloy sheet with non-standard lightening hole - Google Patents

Abstract

The invention belongs to the technical field of metal plate formation, and relates to a manufacturing method for a part of an aluminum alloy sheet with a non-standard lightening hole, and the thickness of the aluminum alloy sheet is less than 0.6 mm. The manufacturing method is a novel process for forming a metal plate in a quenching state, and controlling a material state in the part forming operation to reduce such defects as bumps generated in a flat area in the lightening hole formation. In processing, a novel quenching-state unfolded material preserved more than 30 minutes and within 48 hours at a low temperature room is leveled by a multi-roller leveler; a lightening hole is punched; and the shape is corrected (completed within 1.5 hours after the product is discharged from a low temperature room). The manufacturing method is advantaged in that, the formation and the shape correction of the part in the aging period are completed by using the characteristic that hard aluminum still has excellent plasticity in the aging period after being quenched, and a mechanical method is used for replacing a lot of manual operations to improve the production efficiency and the product forming quality.

Description

The manufacture method of the nonstandard lightening core part of a kind of aluminum alloy thin strip

Technical field

The invention belongs to Sheet Metal Forming Technology field, relate to the manufacture method of a kind of thickness at the nonstandard lightening core part of the aluminum alloy thin strip of below 0.6mm.

Background technology

Tradition forming technology is mainly soft state material molds and is shaped, and then quenches, again mould school shape.Be applicable to the shaping of the general thickness aluminum alloy part of more than 0.6mm.

The product that tradition forming technology is shaped, material is all thicker aluminium sheet, and when being applied to thin aluminum sheet, product easily produces defects such as agitating, and after quenching, school shape workload is large, and production efficiency is low, and product percent of pass is low.

Summary of the invention

The object of the invention is the manufacture method of the nonstandard lightening core part of aluminum alloy thin strip proposing a kind of below 0.6mm thickness.Technical solution of the present invention is,

1) technological preparation

Manufacture punch die by product design, die surface is bright and clean,

2) manufacture

blanking, according to product calculated with mathematical model spread material, digital control milling produces spread material;

oil removing, removes material surface dirt, impurity;

sanding section;

quenching, heat-treats product according to HB/Z276 standard;

low temperature chamber is preserved, temperature ,-15 DEG C ~-21 DEG C times, 30 minutes ~ 48 hours;

product is smoothed,

stamping, be installed debugging mould, located by the semi-finished product after smoothing on mould, eats up part of light holes;

correct, after product goes out low temperature chamber, within 1.5 hours, complete smoothing, stamping and correcting process.

The advantage that the present invention has and beneficial effect, the present invention is new as-quenched sheet metal forming technology, very controls materials behavior during part forming operation, reduces flat area when lightening core is shaped and produces defects such as agitating.Add man-hour, the new as-quenched spread material application multiroller flattening machine smoothing within more than 30 minutes, 48 hours preserved by low temperature chamber; Punching press lightening core; School shape (product completes in 1.5 hours after going out low temperature chamber).

The present invention still has this feature of good plasticity after utilizing duralumin to quench within the timeliness phase, completes shaping and the school shape of part, and instead of a large amount of handwork by mechanization means within the timeliness phase, enhances productivity and product shaping quality.

Detailed description of the invention

1) technological preparation

Manufacture punch die by product design, die surface is bright and clean,

2) manufacture

blanking, according to product calculated with mathematical model spread material, digital control milling produces spread material;

oil removing, removes material surface dirt, impurity;

sanding section;

quenching, heat-treats product according to HB/Z276 standard;

low temperature chamber is preserved, temperature ,-15 DEG C ~-21 DEG C times, 30 minutes ~ 48 hours;

product is smoothed,

stamping, be installed debugging mould, located by the semi-finished product after smoothing on mould, eats up part of light holes;

correct, after product goes out low temperature chamber, within 1.5 hours, complete smoothing, stamping and correcting process.

Embodiment

Preparing product is 0.4mm thin thick plate aluminium alloy mouth frame, and its raw material are thin and soft, easily produces deadfold (not eliminable fold), has not allowed again obvious surface scratch and hammer trace.

Making step is as follows

1) technological preparation

Nonstandard lightening core punch die is manufactured, die body any surface finish by product design.

2) manufacture

blanking, according to product calculated with mathematical model spread material, digital control milling produces spread material;

oil removing, removes material surface dirt, impurity etc.;

hair down thorn also sanding section, makes edge of materials smooth, reduces the probability of lightening core cracking, avoids injuring operator, and scratches other products and mould;

quenching, heat-treats product according to HB/Z276 standard, makes material reach new as-quenched;

low temperature chamber is preserved, temperature ,-15 DEG C ~-21 DEG C times, 30 minutes ~ 48 hours;

smoothing, multiroller flattening machine is smoothed

stamping, be installed debugging mould, location, eats up part of light holes;

correct, after product goes out low temperature chamber, within 1.5 hours, complete smoothing, stamping and correcting process;

inspection, checks the degree of accuracy of product, checks the surface quality of product simultaneously by model and drawing;

oil removing, removes the greasy dirt etc. produced in process;

homogeneous is checked, and detects the hardness of product, electrical conductivity;

mark, marked product figure number, date of manufacture etc.

Claims (1)

1. a manufacture method for the nonstandard lightening core part of aluminum alloy thin strip, is characterized in that,

1) technological preparation

Manufacture punch die by product design, die surface is bright and clean,

2) manufacture

blanking, according to product calculated with mathematical model spread material, digital control milling produces spread material;

oil removing, removes material surface dirt, impurity;

sanding section;

quenching, heat-treats product according to HB/Z276 standard;

low temperature chamber is preserved, temperature ,-15 DEG C ~-21 DEG C times, 30 minutes ~ 48 hours;

product is smoothed,

stamping, be installed debugging mould, located by the semi-finished product after smoothing on mould, eats up part of light holes;

correct, after product goes out low temperature chamber, within 1.5 hours, complete smoothing, stamping and correcting process.