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Hello, I have a question regarding usage of defective instruments in production line. If an operator of assembly area is using lets say a defective Vernier caliper. The caliper has an error of 0,1mm so it can not be used by machining department, but the assembly department has acceptable error...

Hello, I have a question regarding surface coating inspection. I have implemented controls in my process for wet film inspection, DFT inspection, surface adherence inspection using SSPC standards. But there is one argument which is embossed painting, as shown in the photo. How can one create...

Hello, I have a question about the physical appearance of carbon steel after it is hardened with inudction hardening vs carburising. The steel grade is C45. The reason for question is we have parts with indication of induction hardening to 52 HRC on design. I control it with a portable...

Hello everyone, We have to overhaul an old machine, its a marine loading arm manufactured in 1980. On top of column there is mounted a big bearing with 3 ball races. The ball races show flase brinneling marks. The bearing is manufactured in such a way that there are 3 semicicular tracks...

The surface hardness value can be set by any relevant customer specification or construction code. What was the hardness value of base metal before welding? And what is the hardness value that you have foundin the HAZ? Which instrument did you use to find the hardness value?

Dear all, Is there any ASQ CQA here, or has anyone experience of this exam? I want to go for it. I did a sample exam and I was able to solve 60% without preperation, so a month of preperation will be enough for me to be ready for exam. I have MSc Desgree in Mechanical Engineering and 8...

Dear all, Thank you for a great dscussion. In the end the audit was as described by Mr. Gr8blu. The auditor cheked some of the documentation of the orders to verify if we in reality implement what is written in the procedures. He did not go too much in detail in to the procedures as he has a...

Hello everyone, I have recently joined a company as quality manager. We have to perfrom a renewal of our quality certification ISO 9001. This is my first time to face an audit. I was studying some books by ASQ and following some courses to prepare for the audit. The company also has a...

Hello everyone, Is it possible that a bearing rotates 90 degrees anticlockwise, and then when rotated back 90° clockwise it does without any problem. But when it is rotated further in the clockwise direction by 10° it resists the motion as if it has some mechanical defect inside? If there is...

But is there any standard which sets minimum limits? Or its an open path for designer to do as he likes?

Hello everyone, Is there any standard which establishes the minimim thickness of chromium plating on the steel rods of hydraulic cylinder? We are making a machine to be installed on sea side with supposed life of 25 years. The hydraulic cylinder rods commercially available are with 20 microns...

Hello everyone, Is there any standard which establishes the minimim thickness of chromium plating on the steel rods of hydraulic cylinder? We are making a machine to be installed on sea side with supposed life of 25 years. The hydraulic cylinder rods commercially available are with 20 microns...

I have found the equation for tangential load on the gear teeth: Wt = (60000*P)/(pi*d*n) P = Power (KW) d = Diameter (mm) n = rpm Wt = Tangential load in KN Since the two idlers will not be transmitting force to there shafts, theoretically, the power of pinion will be divided equally among two...

Hello everyone, I have a very basic question about gear train design. In this design, it can be seen that there is a set of 3 gears with same ratio, which are being used to move the bigger gear. I want to usa only one gear instead of three to move the bigger gear. But I have been told that...

The point is that if this is a requirement of ISO 9001 or any other QMS standard? Or its just a company policy?

Well actually, the quality policy and quality manual are rearely updated or changed. The quality modules might get revised more frequently, and should be controlled. So probably your comapny SQE should be sending updated modules to suppliers and the QC must be using updated modules for internal...

Hello everyone, I am revising the quality manual of my company. The older quality manual has the boxes on front page to select: . Controlled copy . Uncontrolled copy If controlled copy is sent to a client, then it has to be kept in records, and in case of update of Quality Manual, that client...

Yes, we do the passivation of the final products. I will look in to these standards now, thank you.

Hello, I have a very basic question. We work with a lot of sheet metal, most of it is austenietic stainless steel. Our operator at the cutting machine unrolls a nudle of sheet but after he has cut the amount of material required, he rolls the sheet back and used metalic strips to hold the roll...

The result should have been like the traingle, but in reality looks like the arc starting from top which is then connected to bottom leg by a straight line.