D915-1 Belt Grinding Machine for Spectroscopic Samples (Dual-Belt Wet / Dry Grinder)

The D915-1 belt grinding machine belongs to the D915 / BG-32 series and is designed for fast pre-grinding and deburring of metal samples before spectrometric analysis. The dual-belt design allows two different grit belts to be mounted at the same time, so rough and fine grinding can be carried out on one machine without changing belts, which saves both time and consumable cost.

Optical emission and other spectrometric methods need a flat, clean, oxide-free surface for the spark to strike consistently, and preparing that surface by hand is slow and inconsistent. The D915-1 turns sample preparation into a repeatable operation, and both dry and wet grinding modes are available – in wet mode circulating cooling water keeps the sample surface cool and prevents the structural changes that overheating can cause.

Technical Specifications

Dual-belt design and quick belt change

Two belts of different grit can be fitted at the same time, so the operator can take a sample from coarse pre-grinding straight to a fine finish on the same machine. The belt is replaced quickly without tools: loosen the front knob, release the belt tension and slide the belt off, then fit the new belt and re-tension it. That simple mechanism is what keeps the machine productive in a busy sample-preparation room, because belt changes no longer interrupt the workflow.

Wet and dry grinding

In wet mode a circulating cooling water tank supplies water to the grinding zone, keeping the sample surface cool and preventing structural changes – the same concern that makes coolant essential when a metallographic specimen is cut. The welded machine frame is rigid and the 1.1 kW motor drives the belt at 7 m/sec, giving a consistent cut rate across ferrous and non-ferrous samples. Inlet and outlet pipes are DN20 and DN32, which makes connecting the optional wet grinding kit straightforward.

Applications

The D915-1 is widely used in steel plants, foundries, machinery factories, inspection institutes, universities and research centres for spectroscopic sample preparation. It is the compact member of the D915 / BG-32 series, with a footprint of 630 × 250 × 520 mm and a weight of 65 kg, so it fits easily onto a laboratory bench and can be moved between stations when needed. For smaller batches the D915-2 offers the same dual-belt principle in an even lighter frame.

Frequently Asked Questions

What is a belt grinding machine for spectroscopic samples used for?
It prepares metal samples for spectrometric analysis by fast pre-grinding and deburring, producing a flat, clean, oxide-free surface so that the spark strikes consistently. It is also used to remove the surface layer before analysis.

What does the dual-belt design of the D915-1 give me?
Two belts of different grit can be mounted at the same time, so rough and fine grinding are done on one machine without stopping to change belts. That saves time and consumable cost.

Can the D915-1 grind wet as well as dry?
Yes. Both dry and wet grinding modes are available. In wet mode a circulating cooling water tank keeps the sample surface cool and prevents structural changes caused by overheating.

What is the motor power and belt speed of the D915-1?
The motor is rated 1.1 kW at AC 380 V and the belt runs at 7 m/sec, with a belt size of 100 × 920 mm. The machine measures 630 × 250 × 520 mm and weighs about 65 kg.

How easy is it to change the belt?
The belt is replaced quickly without tools: loosen the front knob, release the belt tension and slide the belt off, then fit and re-tension the new belt.

Related Products & Pages

• Spectroscopy & Analysis
• Metallographic Sample Preparation
• D915-2 Belt Grinding Machine for Spectroscopic Samples
• Metal Testing Machines

About CHENJI & Support

CHENJI is the brand of Jinan Chenji International Trade Co., Ltd. (Shandong, China), a manufacturer and exporter of material testing machines since 2014, with in-house quality control plus third-party inspection by SGS or Bureau Veritas. The company holds ISO 9001 certification (626024QH073R1) and is a Bureau Veritas audited supplier (MIC-ASR2451820). Testing machines are normally supplied with a calibration certificate valid for 12 months and traceable to national force standards, and our engineers help you select the machine, fixtures and accessories for your specimen and method.

Every quotation is prepared against the standard you test to, so the delivered machine matches the test method rather than only the headline capacity. Spare parts, consumables and calibration support are available after delivery, and machines can be produced to OEM or ODM requirements when a customer drawing or specification is provided.

Selecting and Verifying a Testing Machine

Choosing a machine is a matter of matching capacity to the specimen and the method, not of buying the largest frame. A 1000 kN machine is not suitable for a sample that needs 1 N of force; capacity selection follows the specimen and the standard, and the force measuring system should be verified per ISO 7500-1 or ASTM E4 on a regular schedule. Load cells are commonly supplied as class 0.5 or class 1, which means the indicated force stays within ±0.5% or ±1% of the true force.

Test results are only comparable when they are quoted together with the standard, the specimen geometry, the test speed and the force measurement class. We are glad to review your test method and specimen so that the machine, fixtures and accessories are correctly specified before you order.

Request a Quotation

Tell CHENJI the samples you analyse and the throughput you need, and we will confirm the D915-1 belt grinding machine, belts and wet grinding kit for a quotation.

Email annie@chenjitester.com or call / WhatsApp +86 158 5311 1612.