阅读说明：本技术 压铸部件的激光焊接方法、压铸产品的制造方法、压铸产品 (Laser welding method for die-cast member, die-cast product manufacturing method, and die-cast product ) 是由 坂井哲男 于 2020-02-18 设计创作，主要内容包括：提供生产率高的压铸部件的焊接方法、压铸产品的制造方法及压铸产品。压铸部件的激光焊接方法包括：通过对将包含金属的第1部件与通过压铸形成的第2部件的接触面包含在内的焊接预定部分照射第1激光,形成第1熔入部分的工序；以及通过对形成有上述第1熔入部分的上述焊接预定部分照射第2激光,形成第2熔入部分,将上述第1部件与上述第2部件焊接的工序。上述第1熔入部分的宽度为上述第2熔入部分的宽度的一半以下。上述第1熔入部分的深度比上述第2熔入部分的深度深。(Provided are a method for welding a die-cast member with high productivity, a method for manufacturing a die-cast product, and a die-cast product. The laser welding method of the die-cast member includes: a step of forming a 1 st melted-in portion by irradiating a 1 st laser beam to a welding planned portion including a contact surface between a 1 st member and a 2 nd member formed by die casting, the welding planned portion including the metal; and a step of forming a 2 nd melted portion by irradiating the 2 nd laser beam to the portion to be welded where the 1 st melted portion is formed, and welding the 1 st member and the 2 nd member. The width of the 1 st fusion-bonding part is less than or equal to half of the width of the 2 nd fusion-bonding part. The depth of the 1 st penetration portion is deeper than the depth of the 2 nd penetration portion.)

1. A method of laser welding die cast parts, comprising:

a step of forming a 1 st melted-in portion by irradiating a 1 st laser beam to a welding planned portion including a contact surface between a 1 st member and a 2 nd member formed by die casting, the welding planned portion including the metal; and

forming a 2 nd melted portion by irradiating a 2 nd laser to the planned welding portion where the 1 st melted portion is formed, and welding the 1 st member and the 2 nd member;

the width of the 1 st fusion-in part is less than half of the width of the 2 nd fusion-in part,

the depth of the 1 st penetration portion is deeper than the depth of the 2 nd penetration portion.

2. A method of manufacturing a die-cast product, comprising:

a step of forming a 1 st melted-in portion by irradiating a 1 st laser beam to a welding planned portion including a contact surface between a 1 st member and a 2 nd member formed by die casting, the welding planned portion including the metal; and

forming a 2 nd melted portion by irradiating a 2 nd laser to the planned welding portion where the 1 st melted portion is formed, and welding the 1 st member and the 2 nd member;

the width of the 1 st fusion-in part is less than half of the width of the 2 nd fusion-in part,

the depth of the 1 st penetration portion is deeper than the depth of the 2 nd penetration portion.

3. The manufacturing method of die-cast product according to claim 2,

the 1 st fusion-bonding portion includes a plurality of linear portions.

4. The manufacturing method of die-cast product according to claim 2,

the 1 st melted-in part is 1 curved line.

5. The manufacturing method of die-cast product according to claim 2,

the 1 st melted-in portion includes a plurality of dot-like portions.

6. The manufacturing method of die-cast product according to any one of claims 2 to 5,

the 2 nd melted portion is linear along the contact surface.

7. A die cast product comprising:

a 1 st part comprising a metal;

a 2 nd member formed by die casting and welded to the 1 st member; and

a melt-in portion formed between the 1 st member and the 2 nd member,

linear or a plurality of dot-shaped projections are formed on the lower surface of the melted portion.

8. The die-cast product according to claim 7,

the die-cast product is a closed container.

9. The die-cast product according to claim 7 or 8,

the die cast product is a housing of a hard disk drive.

Technical Field

Background

There are cases where a metal member is formed by die casting and the metal member and another metal member are joined by laser welding to thereby manufacture a product. In this case, defects may occur during laser welding, and productivity may be lowered.

Disclosure of Invention

Drawings

Fig. 1 is a flowchart showing a laser welding method for die cast parts according to embodiment 1.

Fig. 2 (a) is a plan view showing a laser welding method for die cast parts according to embodiment 1, and (b) is a sectional view thereof.

Fig. 3 (a) is a plan view showing a laser welding method for die cast parts according to embodiment 1, and (b) is a sectional view thereof.

Fig. 4 (a) is a plan view showing a laser welding method for die cast parts according to embodiment 1, and (b) is a sectional view thereof.

Fig. 5 is a plan view showing a laser welding method for the die cast part according to embodiment 2.

Fig. 6 is a plan view showing a laser welding method for the die cast member according to embodiment 3.

Fig. 7 is a sectional view showing a die-cast product according to embodiment 4.

Embodiments relate to a laser welding method of a die cast member, a manufacturing method of a die cast product, and a die cast product.