What type of sandblasting machine is selected for surface treatment of hardware products?

I'll give you a guide to sandblasting machines for small hardware, which can be directly selected and purchased. It's not empty, but all the conclusions can be used in the workshop.

First, what sandblasting machine is suitable for small hardware?

Hardware: screws, nuts, gaskets, stamping parts, castings, small parts, locks, bathroom parts, etc. Unified recommendation: roller sandblasting machine/crawler sandblasting machine.

1. First choice: roller sandblasting machine (small hardware is most commonly used)

Suitable for: small pieces, batches, hardware that is not afraid of collision.

Working mode: the parts roll in the drum+sand blasting, automatically roll, no dead angle.

Advantages:

High efficiency and labor saving.

Uniform surface, descaling, deburring, derusting and pretreatment can be done.

Small footprint and low price.

Model: small roller sandblasting machine (model 60/model 80/model 100)

Applicable:

Screws, nuts, small stamping parts, small castings, small iron parts, small copper parts.

2. Large quantity, slightly bulky: crawler automatic sandblasting machine

Suitable for: medium hardware, bathroom hardware, small aluminum parts and small zinc alloy parts.

Advantages:

Continuous automatic feeding

No damage to products, more uniform sandblasting.

Suitable for assembly line

Applicable:

Door handle, hinge, small lock body, decorative hardware

3. Precision small parts, fear of bumping: manual box sandblasting machine

Suitable for:

Precision hardware, polishing pretreatment, aluminum alloy small parts, stainless steel small parts, special-shaped parts

Advantages:

Controllable sandblasting area

No collision, no damage to appearance

Disadvantages: low efficiency, relying on labor.

Second, hardware surface treatment: what sand material is used?

Choose directly according to the effect you want:

1. Rust removal, scale removal and welding slag removal.

Sand material: emery/brown corundum (40#~60#)

Effect: fast and clean

2. Deburring, chamfering and matte treatment

Sand: glass beads (80#~120#)

Effect: the surface is fine and does not damage the size. It is suitable for stainless steel, copper and aluminum.

3. Pretreatment before electroplating/spraying (enhancing adhesion)

Sand: white corundum/brown corundum 80#~120#

Effect: uniform roughness, no delamination.

4. Small pieces of aluminum alloy/zinc alloy (afraid of deformation)

Sand: resin sand, plastic sand and fine glass beads.

Effect: soft, non-flowered, non-deformed.

Third, how to choose the hardware sandblasting machine? Look at these four points.

Part size

< ＜5cm: drum type

5 ~ 15cm: crawler type

Special-shaped/Precision: Box Manual

yield

Small batch: manual box type

Medium batch: drum

Mass production: crawler automatic

Surface requirement

Matte and even: glass beads+roller

Rust removal and oil removal: emery

Precision: fine sand+manual

texture of wood

Iron/steel: brown corundum

Stainless steel/copper: glass beads

Aluminum/zinc alloy: plastic sand/resin sand

Fourth, the most recommended standard configuration (hardware general)

Model: drum sandblasting machine 80

Sand: 100# glass beads or 80# brown corundum.

Functions: automatic rolling, automatic dust removal and automatic sand return.

Use:

Derusting, deoxidation, deburring, matte, electroplating pretreatment.

90% hardware factories use this set, which has the highest cost performance.