IPQC (InPut Process Quality Control) means process control in Chinese, which refers to the quality control of products from the input of materials into production to the final packaging of the product. Also called quality control in manufacturing, or quality control during production. Since the inspection method adopted by IPQC is patrol inspection between various processes in the production process, it is also called patrol inspection. The general method used by IPQC is random inspection. The inspection content is generally divided into random inspection of the product quality of each process, inspection of the operating methods and methods of the operators of each process, and spot inspection of the contents in the control plan.
No matter what type of interview it is, the questions asked are the same, and they remain the same, and there are rules to be found. In fact, for all interviewers, there is only one purpose: to learn the most information about you in the shortest time. If you want to prepare for the interview efficiently, start with the following seven major aspects!
Basic information: Please describe your previous work experience and work results in the most concise language.
Professional background: What qualities do you think this position should have?
Working mode: Are you used to working alone or in a team?
Value orientation: What do you think of your original unit and boss?
Qualifications: How would you describe your personality?
Salary: Is it convenient for you to tell me what your current salary is?
Background Check: Would you mind if we ran some checks through your old employer?
Most interviews are basically inseparable from these questions. Of course, there are also some professional questions that may be asked. For IOQC positions, they usually cover the purpose of IPQC, IPQC methods, IPQC process inspection work content, Ask job seekers questions about job responsibilities, etc. Therefore, job seekers who ask professional questions can make the following preparations:
IPQC purpose
The process of product realization is a complex human-computer interaction system, consisting of different processes. In this process, there is both logistics and information flow. If you want the output to meet customer requirements, you must do the following aspects:
Ensure input quality
Stable machinery and equipment , have sufficient capabilities, and personnel operate strictly according to standards
The key parameters (CTQ) closely related to product quality are in a stable and controlled state
The information is accurate, complete, timely, and capable Play a guiding role
An effective process monitoring mechanism can detect process abnormalities in time
Forward feedback mechanism enables the process to correct abnormalities in a timely manner
Backward The feedback mechanism can effectively prevent the loss of defective products
Audit the first and final parts of the product to provide shift quality assurance
Smooth process interfaces to prevent resource waste
Execution of the above aspects It depends on the continuous efforts of IPQC, and it is with the above support that the process is the process that ensures the quality of the output in the true sense. Therefore, the work of IPQC realizes the transition from process to process, so that the output is no longer the input. Simple addition, but added value in quantity and quality.
IPQC methods mainly include the following methods:
Perform process audits according to the audit checklist—the basic status of the process, which does not change depending on the product
Process operation inspection— Materials, tools, auxiliary materials, methods, personnel confirmation
First article confirmation inspection—depending on the product, process, equipment, software, parameter inspection
Records—authentic, clear, and timely
Feedback mechanism between each process - timely feedback of relevant information
Early warning mechanism works
Control of non-conforming products - identification, isolation, differentiated placement, statistical analysis< /p>
Material input - put the right materials into the right products at the right time, and record them promptly and accurately to facilitate traceability
Product standards - process standards, functional requirements
Sampling inspection of the output of each process - confirm that the process is stable, has sufficient capabilities, and the product is qualified
IPQC process inspection work content
Pre-production work preparation
According to the production plan, determine whether the BOM, ECN and color scheme of the production model are consistent with the online materials, and determine the inspection specifications. If there are samples for IQC incoming materials, provide the samples to IPQC and production inspectors to confirm whether the incoming material inspection is online Selection; if it is online selection, IQC will guide the online operator to select according to the sample.
Whether the online materials meet the product BOM requirements, ranging from small screws to large cartons, whether each box (bag) of materials is changed is confirmed in time, and whether the types of online materials are complete, model and specifications are checked according to the product BOM and ECN correct.
Whether SOP/WI is hung, and whether the arrangement is arranged according to the process flow
Work content in process control
Fill in the inspection report carefully and on time (usually once every 2 hours ), check the electrostatic ring inspection record to see if all used electrostatic rings have been inspected and recorded; check the electric batch torque inspection table, whether the torque of the electric batch at the corresponding station meets the requirements of the SOP of the station and record the report< /p>
Check whether the corresponding number on the soldering iron inspection table and the temperature of the soldering iron at the workstation meet the requirements of the SOP and record the report, and whether the soldering iron has grounding and leakage prevention measures
Make sure there are qualified first parts, Sample
Use the first article and sample to check whether the instrument and fixture are normal; make sure it is within the validity period of the instrument calibration; confirm that the set parameters are consistent with the product requirements
Whether the employee operations are in accordance with the work instructions Consistent, pull down the first 5 products to see if they are followed from front to back, and check 5 /2H/workstations again to confirm
Whether new products and new employees are inspected focusing on special procurement, substitution, trial production, and concessions Those who are released must focus on auditing, recording the situation and feedback on the results
The work must be placed in a fixed position, without accumulation, and handled with care. Employees must check themselves and each other before releasing qualified products
Whether the unqualified products are marked and whether the unqualified products are recorded on time
If any incoming materials and poor operations cause the materials to be unable to be used normally and affect the completion of the order, <
If the defective ratio of test stations (such as semi-finished product testing, functional testing and appearance inspection stations) exceeds the quality target, the <
A. Normal Production (mass production)
The single defective rate per hour is 3%--5%. A feedback form for quality exception processing is required - engineering analysis
The total defective rate per hour 5%-10% A feedback form for quality exception handling is required----Engineering analysis
B. Trial production
The total defective rate is 10% A feedback form for quality exception handling is required-- --Engineering analysis
C. Line suspension notice
Single item defective rate per hour ≥5%
Total item defective rate per hour ≥8%
Requirement: Engineering analysis online within 1 hour Provide solutions, if there is no reply, stop the line
Whether the materials, semi-finished products, and finished products are placed with implementation status marks and signatures
Inspect whether the report records are complete, clear, and clear at a glance. The "total number", "defective number" and "defective rate" are calculated and recorded every hour. Does the daily production line QC test report include "total number of tests", "total number of defectives" and "total defective ratio"?
Have you understood and followed up on customer complaints and returns? The rework situation must be followed up, bad statistics and result feedback must be kept, and the three current "status quo", "current objects" and "on-site" should be retained
Replacement and recording of sockets, batteries, contacts, etc. for easy-to-wear test in a timely manner (such as , the charging port of the charger is fragile, causing the mobile phone charger interface to be damaged).
Any operation, packaging, and storage must not potentially affect the quality.
Customers relax product standards and When a function or appearance is fully accepted, the customer needs to sign a form for confirmation or sign a sample.
Customers' requirements for product standard changes must be fed back to online PQC and QA in a timely manner to achieve standard unification
Based on the QA sampling results, evaluate and audit the online PQC work and make weekly summaries.
IPQC job responsibilities
Inspect strictly according to the inspection standards based on daily production Produce the first product and inspect it;
Stamped the first product after inspection with a qualified seal and place it in the corresponding position;
When unqualified products occur, they should Immediately notify relevant personnel to make improvements to avoid batches of defective products;
Products with unstable quality should be tracked, and if there are problems, they should be reported to superiors or relevant personnel in a timely manner, and solutions should be found and resolved in a timely manner. Problems;
Assist supervisors to handle customer feedback and complaints, and ensure that defective and good products in warehouse inventory are effectively handled;
Responsible for signing and confirming the first item, and ensuring that there are no Samples will not be produced and unqualified samples will not be shipped;
Coordinate the quality management of the workshop.
Perform inspection tasks and complete product inspections and random inspections based on documents and inspection instructions required by Huawei, ZTE, and customers;
According to self-made work orders, electronics, and BOM Confirm the first article and online materials such as architecture, ECN, contact sheet, software release form, Checklist and "key components list". (First article confirmation based on different inspection documents according to different customer needs)
Cooperate with the production line to confirm the return of materials
Spot inspection of the inspection tooling equipment, and skillfully use the inspection tooling equipment to complete various inspection tasks
Inspect product labels based on the relevant document "Barcode Information Table" and perform scanning operations
Provide records of material trial production defects
Receipt of controlled documents , classification, archiving and recycling
Conduct inspections and audits on production line 6S, ESD and other aspects that affect quality, and promote the improvement of production line processes.
Record and complete relevant quality reports