Quality Control for CNC Machining Parts

2026-02-10      

Before production

(1)Technical analysis
In the early stage of the project, the engineering team will make sure all the details according to your 3D and 2D drawings, including the material, tolerance, surface treatment, structure, and so on..

(2)Material Confirmation

To make sure the raw material’s consistency and customer’s requirements, we could offer relevant reports, like Material Certificate, Chemical Analysis, Salt-Spray Tesging, Anodizing Thickness, RoHS and so on..

In Production Quality Control

(1)On-site inspection system
It is very important for precision machining that the material block is placed at the correct position. With on-site inspection rules, the machines will examine the positions, and handle them accordingly. It helps to avoid the problems at the early stage and save cost and time.

(2)In-process quality control

To make sure the parts will be quality-satisfied, give our customers peace of mind before moving into mass production, we will offer sample inspection for each project, the relevant sample image or actual part will be sent to you for your approval. After they are confirmed, we start the massive production. In Forlong, we strictly comply with the ISO9001:2015 rules.  The QC staff will make conventional checks for all parts that are being processed every 2 hours.

Before Delivery Final Checkup

FQC (doing the overall check onquality inspection of the product), including re-checking the appearance and performance and packaging and shipping. The packaging department should review the appearance and surface of the parts at the time of shipment, including processing burrs, removing edges, sharp corners, and smoothing. After that, the qualified parts transferred from the quality department will be shipped according to the delivery order.

Shipping

We can’t control the logistic risk completely, but we will adopt the following 2 ways to reduce the risk of shipment. (1). Using the wrapping paper, foam, paper, and wooden box to package the parts in order to the safety of goods during the shipment. (2) Frequently check the status of the shipping according to the tracking number.

In other words, it includes the following five steps to make sure the quality of each part.
1) Raw material checking ------- Incoming quality control ( IQC)
2) Relevant production line checking-----(PLC)
3) Complete production checking ----In-process quality control(IPQC)
4) Checking the parts after being completed---- Final quality control(FQC)
5) Checking the parts before shipment-----Outgoing quality control(QC)