XIAYI Develops Fully Automatic Vision Inspection Equipment for Powder Metallurgy Parts
2026-10-23
.gtr-container-x7k2m {
font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif;
font-size: 14px;
line-height: 1.6;
color: #1a1a2e;
background: transparent;
padding: 20px;
box-sizing: border-box;
}
.gtr-container-x7k2m *,
.gtr-container-x7k2m *::before,
.gtr-container-x7k2m *::after {
box-sizing: border-box;
}
.gtr-container-x7k2m p {
font-size: 14px;
line-height: 1.6;
text-align: left;
margin: 0 0 16px 0;
color: #1a1a2e;
}
.gtr-container-x7k2m .gtr-title-x7k2m {
display: block;
font-size: 18px;
font-weight: bold;
color: #0000FF;
line-height: 1.4;
margin: 24px 0 12px 0;
padding: 0 0 8px 0;
border-bottom: 2px solid #0000FF;
letter-spacing: 0.2px;
}
.gtr-container-x7k2m .gtr-title-x7k2m:first-child {
margin-top: 0;
}
.gtr-container-x7k2m .gtr-keywords-x7k2m {
font-size: 14px;
line-height: 1.6;
text-align: left;
color: #3a3a5c;
margin: 24px 0 12px 0;
padding: 12px 16px;
border-left: 4px solid #0000FF;
border-radius: 0 6px 6px 0;
background: rgba(0, 0, 255, 0.04);
}
.gtr-container-x7k2m .gtr-meta-x7k2m {
font-size: 14px;
line-height: 1.6;
text-align: left;
color: #3a3a5c;
margin: 0 0 16px 0;
padding: 12px 16px;
border-left: 4px solid #4d4dff;
border-radius: 0 6px 6px 0;
background: rgba(0, 0, 255, 0.04);
}
.gtr-container-x7k2m .gtr-table-wrap-x7k2m {
width: 100%;
overflow-x: auto;
margin: 16px 0;
border-radius: 8px;
box-shadow: 0 2px 8px rgba(0, 0, 255, 0.08);
}
.gtr-container-x7k2m table {
width: 100%;
border-collapse: collapse !important;
border-spacing: 0 !important;
border: 1px solid #c7c7f0 !important;
font-size: 14px !important;
font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif !important;
background: transparent !important;
}
.gtr-container-x7k2m table th {
border: 1px solid #c7c7f0 !important;
padding: 10px 12px !important;
text-align: left !important;
font-size: 14px !important;
font-weight: bold !important;
color: #0000FF !important;
background: rgba(0, 0, 255, 0.06) !important;
vertical-align: top !important;
word-break: normal !important;
overflow-wrap: break-word !important;
}
.gtr-container-x7k2m table td {
border: 1px solid #c7c7f0 !important;
padding: 10px 12px !important;
text-align: left !important;
font-size: 14px !important;
color: #1a1a2e !important;
vertical-align: top !important;
word-break: normal !important;
overflow-wrap: break-word !important;
}
.gtr-container-x7k2m table tr:hover td {
background: rgba(0, 0, 255, 0.03) !important;
}
.gtr-container-x7k2m ul,
.gtr-container-x7k2m ol {
list-style: none !important;
margin: 0 0 16px 0;
padding: 0 0 0 20px;
}
.gtr-container-x7k2m ul li,
.gtr-container-x7k2m ol li {
position: relative;
font-size: 14px;
line-height: 1.6;
text-align: left;
margin: 0 0 8px 0;
padding: 0;
color: #1a1a2e;
}
.gtr-container-x7k2m ul li::before {
content: "•" !important;
position: absolute !important;
left: -16px !important;
color: #0000FF;
font-weight: bold;
}
.gtr-container-x7k2m ol li::before {
content: counter(list-item) "." !important;
position: absolute !important;
left: -20px !important;
color: #0000FF;
font-weight: bold;
}
.gtr-container-x7k2m a {
color: #0000FF;
text-decoration: none;
border-bottom: 1px solid rgba(0, 0, 255, 0.3);
transition: color 0.2s ease, border-color 0.2s ease;
}
.gtr-container-x7k2m a:hover {
color: #0000cc;
border-bottom-color: #0000cc;
}
.gtr-container-x7k2m strong,
.gtr-container-x7k2m b {
color: #0000FF;
font-weight: bold;
}
@media (min-width: 768px) {
.gtr-container-x7k2m {
padding: 32px 40px;
max-width: 960px;
margin: 0 auto;
}
.gtr-container-x7k2m p {
font-size: 14px;
margin-bottom: 18px;
}
.gtr-container-x7k2m .gtr-title-x7k2m {
font-size: 18px;
margin: 32px 0 14px 0;
}
.gtr-container-x7k2m .gtr-keywords-x7k2m,
.gtr-container-x7k2m .gtr-meta-x7k2m {
padding: 14px 20px;
}
}
XIAYI has independently developed fully automatic vision inspection equipment designed for 100% appearance inspection of powder metallurgy parts. The system supports automated quality control by inspecting each part for visible appearance defects before shipment.
Automated Inspection for Powder Metallurgy Manufacturing
Powder metallurgy components are widely used in automotive and motorcycle shock absorber systems. During production, visible defects such as surface irregularities, cracks, chips, and other appearance abnormalities may affect product acceptance, depending on the component design and applicable inspection criteria.
Traditional manual inspection can be labor-intensive and may involve differences in judgment between operators. XIAYI's fully automatic vision inspection equipment is designed to support a more standardized inspection process, helping manufacturers reduce dependence on manual visual checks.
100% Appearance Inspection Before Shipment
Unlike sampling-based inspection, the system is intended to inspect every part passing through the inspection process. This approach helps identify visible appearance defects and supports the segregation of nonconforming products according to the established inspection criteria.
By integrating automated visual inspection into the production quality-control process, manufacturers can strengthen defect screening before packaging and shipment. The objective is to reduce the risk of visibly defective parts reaching customers and improve outgoing product quality control.
Actual inspection capability depends on the part geometry, surface condition, defect type, and inspection criteria defined for each application.
In-House Equipment Development and Application Adaptation
As a manufacturer of powder metallurgy shock absorber components and related production equipment, XIAYI develops automation solutions with practical manufacturing requirements in mind.
The fully automatic vision inspection equipment can be evaluated according to the component design, target defect types, inspection requirements, and production workflow. Application-specific assessment helps determine the appropriate inspection setup and criteria for different powder metallurgy parts.
Supporting Consistent Outgoing Quality
Automated vision inspection provides an additional layer of quality control by checking each part instead of relying only on periodic sampling. When used with defined acceptance criteria and appropriate verification procedures, it helps manufacturers identify appearance defects earlier and improve the control of products released for delivery.
Through in-house equipment development and manufacturing experience, XIAYI continues to explore automation solutions that connect component production with inspection processes, supporting more systematic quality management for powder metallurgy manufacturing.
View More
Quality Upgrade: We Adopt Integrated Roughness‑Contour Tester for Shock‑Absorber Piston Precision Inspection
2026-08-10
.gtr-container-1a2b3c {
font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif;
color: #222;
line-height: 1.6;
padding: 16px;
max-width: 100%;
box-sizing: border-box;
margin: 0 auto;
}
.gtr-container-1a2b3c p {
font-size: 14px;
margin-bottom: 1em;
text-align: left !important;
}
.gtr-container-1a2b3c .gtr-title {
font-size: 18px;
font-weight: bold;
color: #0000FF;
margin-bottom: 1.5em;
text-align: left;
}
.gtr-container-1a2b3c .gtr-highlight-box {
background-color: rgba(0, 0, 255, 0.08);
border: 1px solid rgba(0, 0, 255, 0.2);
border-radius: 4px;
padding: 15px;
margin-bottom: 1.5em;
box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.gtr-container-1a2b3c .gtr-highlight-box p {
margin-bottom: 0.5em;
}
.gtr-container-1a2b3c .gtr-highlight-box p:last-child {
margin-bottom: 0;
}
@media (min-width: 768px) {
.gtr-container-1a2b3c {
padding: 24px;
max-width: 960px;
}
.gtr-container-1a2b3c .gtr-title {
font-size: 20px;
}
}
New Integrated Roughness-Contour Measuring Machine
Recently, our company has commissioned a new integrated roughness‑contour measuring machine. It is specially applied for integrated precision inspection of dimension and surface roughness after shock‑absorber piston grooving, upgrading full‑process quality control for our powder‑metallurgy pistons.
Equipped with high‑precision imported sensors, the machine achieves 0.02 μm Z‑axis resolution. It automatically measures contour dimension, surface roughness and waviness. It supports auto‑programmed inspection and CAD drawing comparison, exports standardized multi‑format test reports and provides lifetime free software updates. Complying with GB and ISO standards, it measures inner holes as small as 6 mm, ideal for inspecting grooves, oil holes and end faces of shock‑absorber pistons.
Benefiting from 4‑axis joystick control, probe protection and large‑angle climbing measurement, it minimizes manual errors. The Grade‑00 granite workbench and high‑rigidity guide rails guarantee stable long‑term measurement with repeat error within 3%. Tiny defects such as dimensional deviation, burrs and unsatisfactory roughness after piston grooving can be accurately identified to reduce product defect rate.
With this new equipment, we establish a closed‑loop quality‑control chain covering powder forming, precision machining, grooving and integrated full inspection. Combined with our IATF16949 three‑level QC system, full traceability of piston‑groove test data is realized. It strengthens our micron‑level manufacturing capacity, improves piston consistency, delivers high‑standard OEM components for global auto manufacturers and enhances our international competitiveness.
View More
High-Performance Sintered Suspension System Parts | Custom Powder Metallurgy Components Supplier
2026-07-20
.gtr-container-ssp789 {
font-family: Verdana, Helvetica, "Times New Roman", Arial, sans-serif;
color: #333333;
line-height: 1.6;
padding: 20px;
max-width: 100%;
box-sizing: border-box;
}
.gtr-container-ssp789 .gtr-heading {
font-size: 18px;
font-weight: bold;
color: #0000FF;
margin-top: 25px;
margin-bottom: 15px;
padding-bottom: 5px;
border-bottom: 1px solid rgba(0, 0, 255, 0.1);
}
.gtr-container-ssp789 p {
font-size: 14px;
margin-bottom: 15px;
text-align: left !important;
}
.gtr-container-ssp789 strong {
color: #0000CC;
}
.gtr-container-ssp789 .gtr-table-wrapper {
width: 100%;
overflow-x: auto;
margin-bottom: 20px;
}
.gtr-container-ssp789 table {
width: 100%;
border-collapse: collapse !important;
margin: 0 !important;
padding: 0 !important;
font-size: 14px;
min-width: 600px;
}
.gtr-container-ssp789 th,
.gtr-container-ssp789 td {
border: 1px solid rgba(0, 0, 255, 0.3) !important;
padding: 10px 15px !important;
text-align: left !important;
vertical-align: top !important;
word-break: normal !important;
overflow-wrap: normal !important;
}
.gtr-container-ssp789 th {
background-color: rgba(0, 0, 255, 0.1) !important;
color: #0000FF !important;
font-weight: bold !important;
}
.gtr-container-ssp789 tbody tr:nth-child(even) td {
background-color: rgba(0, 0, 255, 0.02) !important;
}
.gtr-container-ssp789 ul,
.gtr-container-ssp789 ol {
margin: 0 0 20px 0;
padding: 0;
list-style: none !important;
}
.gtr-container-ssp789 li {
position: relative;
padding-left: 25px;
margin-bottom: 8px;
line-height: 1.6;
font-size: 14px;
list-style: none !important;
}
.gtr-container-ssp789 ul li::before {
content: "•" !important;
color: #0000FF !important;
font-size: 1.2em !important;
position: absolute !important;
left: 0 !important;
top: 0 !important;
line-height: 1.6;
}
.gtr-container-ssp789 ol li::before {
content: counter(list-item) "." !important;
color: #0000FF !important;
font-weight: bold !important;
position: absolute !important;
left: 0 !important;
top: 0 !important;
width: 20px !important;
text-align: right !important;
line-height: 1.6;
}
@media (min-width: 768px) {
.gtr-container-ssp789 {
padding: 30px 40px;
}
.gtr-container-ssp789 .gtr-heading {
margin-top: 35px;
margin-bottom: 20px;
}
.gtr-container-ssp789 .gtr-table-wrapper {
overflow-x: hidden;
}
.gtr-container-ssp789 table {
min-width: auto;
}
}
1. Introduction
In modern automotive manufacturing, the demand for lightweight, high-strength, and cost-efficient components has never been greater. As a trusted supplier of powder metallurgy sintered parts, we specialize in providing a comprehensive range of sintered components for suspension systems — delivering exceptional performance, dimensional accuracy, and long service life across passenger vehicles, commercial trucks, and off-highway equipment.
Our manufacturing capabilities cover the full spectrum of suspension-related sintered parts, from strut rod bushings and stabilizer bar links to control arm inserts, shock absorber components, and mounting brackets. Every part is produced using state-of-the-art powder metallurgy technology, which allows us to achieve complex geometries with minimal secondary machining while maintaining tight tolerances — often within ±0.02 mm.
2. Product Range — Sintered Suspension System Parts
Part Category
Typical Applications
Material Grades
Strut & Shock Components
Piston rods, valve bodies, spring seats, guide bushings
Fe–Cu, Fe–Ni–Cu, Distaloy®
Control Arm & Linkage Parts
Ball joint seats, bushing sleeves, bearing retainers
Fe–C, Fe–Cu–C, Diffusion-alloyed
Stabilizer Bar Components
End-link spacers, mounting collars, pivot bushings
Sinter-hardened steel, Fe–Mo pre-alloy
Mounting Brackets & Housings
Strut tower reinforcements, cross-member inserts
Fe–Ni–Mo, hybrid alloys
Wear-Resistant Parts
Sintered brake caliper pistons, thrust washers, wear plates
Cu-infiltrated steel, Cr-prealloyed
3. Why Choose Powder Metallurgy (PM) for Suspension Parts?
Material Efficiency: Near-net-shape production achieves material utilization rates exceeding 97%, compared to 40–60% with traditional machining — significantly reducing raw material waste and cost per part.
Complex Geometry Freedom: Sintering enables the creation of intricate internal splines, undercuts, non-circular bores, and multi-level stepped profiles that would be extremely costly or impossible to machine conventionally.
Consistent Quality at Scale: Once the tooling and compaction parameters are established, PM processes deliver batch-to-batch uniformity — ideal for OEM and Tier-1 supply chains that demand zero-defect delivery with full PPAP documentation.
Self-Lubricating Options: Through controlled porosity and oil impregnation, sintered suspension bushings and bearings can become self-lubricating — eliminating the need for external grease fittings and reducing long-term maintenance requirements for fleet operators.
Weight Reduction: PM components can be designed with optimized mass distribution, reducing unsprung weight in suspension assemblies — a critical factor for improving vehicle handling dynamics and fuel economy.
Competitive Total Cost: When evaluated on a total-cost-per-part basis (including tooling amortization, material yield, and post-sintering operations), PM consistently outperforms die-casting, forging, and CNC machining for medium-to-high-volume suspension component programs.
4. Material & Heat Treatment Capabilities
Process
Application
Performance Benefit
Sinter Hardening
Integrated cooling during sintering to achieve martensitic structures
Eliminates separate quench-and-temper steps; hardness up to 45 HRC
Case Carburizing
Surface hardening for wear-prone suspension joints
Hard wear-resistant surface (60+ HRC) with a tough ductile core
Steam Treatment
Sealing surface porosity on structural brackets
Improved corrosion resistance and pressure tightness
Oil Impregnation
Self-lubricating bushings and pivot sleeves
Extended maintenance intervals; typical oil content 12–25% by volume
Plating & Coating
Zinc, zinc-nickel, manganese phosphate
Salt-spray resistance exceeding 240 hours (Zn-Ni)
5. Quality Assurance & Certifications
Our manufacturing operations are certified to IATF 16949:2016, the global automotive quality management standard. Every production lot undergoes:
Dimensional Inspection: CMM and vision measurement systems with SPC trending — 100% critical-to-quality (CTQ) dimension verification on PPAP samples.
Material Verification: Optical emission spectrometry (OES) for chemistry confirmation; universal tensile testing per ASTM E8; apparent hardness and microhardness traverse per customer specifications.
Metallurgical Analysis: Cross-sectioning, microstructure evaluation, and porosity distribution assessment per MPIF Standard 35.
Non-Destructive Testing: Magnetic particle inspection (MPI) and ultrasonic testing for safety-critical suspension components.
Full PPAP / APQP Support: Level 3 PPAP documentation available with every new program launch, including PFMEA, control plan, MSA studies, and initial process capability (Ppk / Cpk ≥ 1.67).
6. Industries Served
While our primary focus is on the automotive suspension sector, our sintered components are also widely used across related industries:
Passenger Vehicles: OEM and aftermarket suspension bushings, bearing retainers, and shock-absorber guide components.
Commercial Trucks & Trailers: Heavy-duty stabilizer bar end-links, leaf-spring saddles, and torque-rod bushings designed for high-cycle fatigue resistance.
Off-Highway & Construction Equipment: Sinter-hardened pivot components for excavator arm linkages and articulated dump-truck suspension joints, engineered for severe shock-load conditions.
Railway & Mass Transit: Primary and secondary suspension components including damper piston rings, spherical bearing housings, and height-control valve bodies.
Motorsport & Performance: Ultra-lightweight, high-strength sintered control-arm inserts and anti-roll bar collars for competitive racing applications.
7. Custom Design & Co-Development
We believe the best outcomes start early in the design cycle. Our application engineering team works collaboratively with your design group through the entire product development lifecycle:
Design-for-PM (DFPM) Review: Our engineers evaluate your initial CAD models and suggest geometry modifications that enhance compaction feasibility, reduce tooling costs, and improve part performance — typically before tooling investment is committed.
Prototyping & Tooling: Rapid soft-tooling prototypes (2–4 weeks) allow for fitment and functional validation before committing to production-grade carbide tooling capable of 500,000+ shots.
Process Validation: We run an internal pre-PPAP production trial to verify OEE, Cp/Cpk, and R&R metrics against your specifications — identifying and resolving potential issues before SOP.
Serial Production & Continuous Improvement: Once in production, our SPC-driven manufacturing cells and annual layout inspections ensure sustained quality. VAVE workshops are conducted periodically to identify additional cost-down opportunities without compromising performance.
8. Contact & Next Steps
Whether you are sourcing a drop-in replacement for an existing specification or developing an entirely new suspension platform, our engineering team is ready to support your project. We welcome the opportunity to:
Review your 2D drawings or 3D CAD files (STEP, IGES, or native formats) and provide a design-for-manufacturability (DFM) assessment within 5 working days.
Supply material and process recommendations tailored to your specific load, wear, and environmental requirements.
Deliver prototype samples with full dimensional and material certification reports.
Provide a competitive quotation including tooling cost, piece price, and lead-time breakdown for your annual volume projections.
Contact us today to discuss your sintered suspension component requirements. We look forward to building a long-term, value-driven partnership with your team.
View More
Whats are the functions and technical demands of piston rods in shock absorber?
2026-03-16
The piston rod is the transmission and guiding rod of the shock absorber. When we drive on a bumpy road, the wheels are impacted and the force is first transmitted to the piston of the shock absorber. One end of the piston rod is connected to the piston and the other end to the vehicle body. There is a top rubber on the shock absorber, and the piston rod is connected to the top rubber. Below the top rubber is a spring, and the top rubber is directly connected to the vehicle body, which can smoothly transmit the impact force and guide the piston to move back and forth in the shock absorber cylinder without deviation. When the piston moves, the hydraulic oil in the shock absorber flows through the small holes on the piston to generate damping force to counteract the vibration. The sealing performance of the piston rod directly affects the leakage of the hydraulic oil. If the sealing at the connection between the piston rod and the shock absorber system is not good and the hydraulic oil leaks, there will be no damping force, and the shock absorber will become an empty shell. Driving will feel extremely bumpy and the vehicle body will shake significantly. Therefore, sealing performance is also a key factor for the piston rod. In addition, the piston rod has the functions of load-bearing and fatigue resistance. Part of the vehicle's weight is transmitted to the lower end of the shock absorber through the piston rod, and during vehicle operation, the piston rod repeatedly withstands tensile and compressive forces. Over time, the forces it experiences are complex. If the strength of the piston rod is insufficient, it is prone to bending, deformation, or even fracture, which could lead to serious consequences such as vehicle body loss of control.
From the perspective of actual driving experience, how does the quality of the piston rod directly affect the driving experience?The most obvious aspects are comfort and handling. A piston rod with high precision and a smooth surface ensures smooth movement of the piston and stable damping force. When driving over speed bumps or uneven roads, the shock can be smoothly absorbed. Conversely, if the piston rod is severely worn and has scratches on its surface, causing unstable damping force, the vehicle may experience bouncing and unstable steering when driving, and even the body may deviate when braking, affecting safety. Therefore, the piston rod not only affects comfort but also driving safety. Many people only focus on the piston seal when repairing shock absorbers, but they overlook the piston rod. In fact, the wear and deformation of the piston rod are the root cause of many shock absorber failures. For example, if there are scratches on the surface of the piston rod, it will wear out the seal during reciprocating motion, leading to oil leakage.
How to determine if the piston rod is normal? We can regularly inspect the piston rod of the shock absorber. If there is oil, rust on the surface or a distinct scratchy and uneven feeling when touched by hand, it indicates that there might be a problem. Additionally, if while driving, you notice a significant deterioration in the shock absorber's performance and increased body jolts, you should also check the piston rod for any bending or deformation.
The performance of shock absorbers largely depends on the quality of the piston rod. We hope everyone can pay more attention to the key components inside the shock absorbers. By being more observant during daily driving, we can make the shock absorption system more durable and drive with greater peace of mind.
The following introduces some requirements for the selection of materials and technical processing of piston rods:Generally, 45# steel is chosen. For some welded ones, 35# steel is selected. According to technical requirements, more than ten different processes are involved in the production process, and each process has strict technical and process requirements. For instance, quenching and tempering, and electroplating are included. The electroplating is hard chromium plating. Additionally, the dimensional tolerance requirements are extremely high because it needs to closely cooperate with oil seals, shock absorber oil, valve systems, etc. The straightness, ellipticity, roughness, and other aspects of the electroplating layer on the surface of the piston rod have extremely high requirements.
View More
How to avoid PTFE bands falling off the grooves of sinter piston?
2026-03-12
Cause A: The roughness of inner tube Ra is too high, or there are tiny welding slag and scratches on the inner wall, which wear down the PTFE layer like a "file".
Solution: If the cylinder wall roughness Ra is too high or contains weld spatters, it acts like a file. Ensure Ra ≤0.2 and implement strict cleaning protocols.
Cause B: Insufficient banding strength. It is a hot-press banding process, the cleanliness of the sinter piston surface or the failure of embedded PTFE material will cause the bands to separate from the powder metallurgy substrate.
Solution: Optimize parameter of heating temperature and time, clean the surface of sinter piston, redesign the grooves on the sinter piston.
Cause C: High-frequency operation raises oil temperature, causing PTFE bands fall down if the gap design between piston and working tube is not reasonable.
Solution: Verify the linear expansion coefficient and adjust tolerance fits to ensure clearance at 150℃.
Cause D: Additives in the shock oil may react with the band material, causing swelling or softening.
Solution: Conduct soaking tests to ensure full compatibility.
View More
