Equipment Parts

Why choose us?

1. Precision investment casting

7-layer silica sol shell: bending strength of shell ≥6MPa

Vacuum auxiliary pouring: liquid metal filling integrity ≥99%

2. Intelligent heat treatment

Normalizing + tempering: Grain size ≥5 (ASTM E112)

Local induction hardening: Surface hardness HRC50-55

3. CNC finishing

Five axis machining center: position tolerance ±0.05mm

Deep hole drilling system: depth-to-diameter ratio 15:1 (aperture tolerance H7)

4. Strengthen the testing system

X-ray inspection (ASTM E155) : Detection of Φ0.5mm defects

Hydraulic test: 2 times the working pressure and maintain pressure for 30 minutes

Spectral analysis: alloy composition deviation ≤0.5%

Product introduction

This investment casting steel is made of high-quality carbon steel/alloy steel (ZG270-500 tensile ≥500MPa), through 7 layers of silica sol composite shell (temperature resistance 1600℃) and vacuum casting process (density ≥99.5%), to achieve 3mm minimum wall thickness of complex structure molding (CT6 accuracy). The products are CNC machining (tolerance ±0.05mm) and shot peening (surface hardness increased by 30%), key components such as pump valve shell through X-ray detection (ASTM E155) and pressure test (1.5 times working pressure), widely used in petrochemical, heavy machinery and other fields.

Our advantage

1. Selection of high-strength materials

Carbon steel: ZG270-500 (tensile ≥500MPa, impact work ≥27J)

Alloy steel: ZG20CrMo (hardness after quenching HB180-220)

Stainless steel: CF8M (ASTM A351, excellent corrosion resistance)

2. Complex structure precision molding

Minimum wall thickness 3mm, maximum single weight 200kg

Dimensional accuracy CT6 (ISO 8062), surface roughness Ra≤6.3μm (as-cast)

Castable:

Irregular runner (min φ8mm channel)

High strength gear housing (EN 1563 standard)

3. Multi-industry application adaptation

Petrochemical: API standard pump valve housing (pressure Class 600)

Construction machinery: excavator joint parts (fatigue life ≥10⁶ times)

Power equipment: turbine seal ring (temperature 550℃)

4. Strict quality certification

Provide EN 10204 3.1 Materials Certificate

Comply with PED 2014/68/EU Pressure Equipment Directive

Detail data

FAQ

1.What is the Minimum Order Quantity?

5~1000 pcs. And we also accpet sample orders.

2. Can you manufacture according to customer's samples?

According to samples, we can make drawing, tooling and sample

3.How long will it take to make new samples according to customer's drawing or sample?

Totally 20 days. 10 days for tooling and another 10 days for sample