Comparison of stainless steel casting production processes: analysis of characteristics of high-precision casting and conventional casting
In the field of stainless steel casting production,High precision castingandConventional castingThey are two mainstream manufacturing processes. Understanding their differences is crucial for purchasing decisions. This article will make an objective comparison from the dimensions of process flow, product characteristics, economy, scope of application, etc. to help you make a reasonable choice based on project needs.
1. Process principle and production process
(1) High-precision casting (investment casting)
core process:
Make a fusible model
Construct a fire-resistant shell
High temperature melting and pouring
Post-shelling treatment
Features: Complex process, suitable for parts with complex structures
(2) Conventional casting (sand casting)
core process:
Making wooden\/metal molds
Shape sand filling
Casting
Falling sand cleaning
Features: Simplified process, suitable for mass production
Process differences: High-precision casting uses one-time investment molds, and conventional casting uses repeatable molds.
2. Comparison of product features
| Contrast Dimensions | High precision casting | Conventional casting |
|---|---|---|
| Dimensional control capability | Within ±0.15mm | ±0.8mm or so |
| surface finish | 3.2-6.3μm | 12.5-25μm |
| structural complexity | Complex cavities can be formed | Suitable for simple structures |
| Subsequent processing requirements | Basically no need | usually required |
Application suggestions:
High-precision processes are preferred for size-sensitive products such as medical devices
Ordinary structural parts (such as pipe fittings) can use conventional processes
3. Economic analysis
Cost composition difference
High precision casting:
Material cost: special mold material consumption is high
Labor costs: high proportion of skilled workers
The overall cost is 30-50% higher than that of conventional processes
Conventional casting:
Material cost: molding sand can be recycled
Production efficiency: high average daily output
Suitable for cost-sensitive projects
Production cycle comparison:
High-precision process: 18-35 days
Routine process: 7-15 days
4. Typical application scenarios
High-precision casting application areas
Medical Devices: Implants, Surgical Instruments
Fluid control: precision valves, pump components
Transportation equipment: aircraft engine parts
Applicable fields of conventional casting
Construction Engineering: Structural Connectors
Agricultural machinery: equipment housing
Municipal facilities: manhole covers, guardrails
5. Select suggestions
quality dimension:Evaluate product tolerance requirements
quantity dimension:Small batch (<100 pieces)="" considering="" high-precision="">
cost dimension:Choose conventional processes when budget is limited
Verification method:
Request process samples
Review manufacturer qualification documents
Inspect the production site
Special reminder: Require suppliers to provide material testing reports to ensure compliance with ASTM\/GB standards.